C11.01 - Specifications and Test Methods for Gypsum Products

ABSTRACT
This specification covers coated glass mat water-resistant gypsum backing panel designed for use on ceilings and walls in bath and shower areas as a base for the application of ceramic or plastic tile. Coated glass mat water-resistant gypsum backing panel shall consist of a noncombustible water-resistant gypsum core, surfaced with glass mat, partially or completely embedded in the core, and with a water-resistant coating on one surface. The specimens shall be tested for flexural strength, humidified deflection, core hardness, end hardness, edge hardness, nail pull resistance, water resistance, and surface water absorption. Coated glass mat water-resistant gypsum backing panel shall have surfaces true and free of imperfections that render the panel unfit for its designed use.
SCOPE
1.1 This specification covers coated glass mat water-resistant gypsum backing panel designed for use on ceilings and walls in bath and shower areas as a base for the application of ceramic or plastic tile.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Within the text, the SI units are shown in brackets.  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers mill-mixed gypsum concrete, consisting essentially of calcined gypsum and suitable aggregate, requiring the addition of water only at the job site. Gypsum concrete is intended for use in the construction of poured-in-place roof decks or slabs. Two classes, based on the compressive strength and density, are covered. Gypsum concrete shall consist of calcined gypsum to which are added aggregates, wood chips, or wood shavings in proportion to meet the applicable requirements of this specification. Test method in this specification shall be performed in order to determine the physical properties of the gypsum concrete. Setting time is determined by the Vicat method.
SCOPE
1.1 This specification covers mill-mixed gypsum concrete, consisting essentially of calcined gypsum and suitable aggregate, requiring the addition of water only at the job site. Gypsum concrete is intended for use in the construction of poured-in-place roof decks or slabs. Two classes, based on the compressive strength and density, are covered.  
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers the requirements for glass mat gypsum substrates designed to be used as exterior substrate or sheathing for weather barriers. The substrates shall consist of a noncombustible water-resistant gypsum core, surfaced with glass mat partially or completely embedded in the core. Materials shall be sampled, tested, and conform accordingly to specified physical property (flexural strength, humidified deflection, nail pull resistance, water resistance, and core, end, and edge hardness) and dimensional (thickness, width, length, end squareness, and edges) requirements.
SCOPE
1.1 This specification covers glass mat gypsum substrate, which is designed to be used as an exterior substrate for a weather barrier.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SIGNIFICANCE AND USE
5.1 This Standard Test Method is intended for use in calibrating hand-held meters to accurately read from approximately 30 % to 90 % ERH. Moisture content is related to the ERH or Aw of a material.  
5.2 Hand-held meters provide a rapid means of sampling the moisture content of gypsum boards and panels during manufacture and for field inspection during and after building construction. However, these measurements are inferential, that is, electrical parameters are measured and compared against a calibration curve to obtain an indirect measure of moisture content. The electrical measurements are influenced by the actual moisture content, a number of other gypsum board and panel variables, environmental conditions, the geometry of the measuring probe, and the design of the meter. The maximum accuracy can only be obtained by an awareness of the effect of each parameter on the meter output and correction of readings as specified by these test methods.  
5.3 Electrical conductance and dielectric meters are not necessarily equivalent in their readings under the same conditions. When this test method is referenced, the type of meter that is being used must be reported with the relevant ranges for precision and bias as specified in this standard.  
5.4 Both types of meters are to be calibrated with respect to ERH as described in this standard.
SCOPE
1.1 This test method applies to the calibration of hand-held moisture meters for gypsum board, glass faced gypsum panels and fiber-reinforced gypsum panels by means of electrical conductance and dielectric meters. The test uses wetted test specimens which are dried down in at least five (5) steps to determine the moisture content based on the weight loss in comparison to the dry weight. The test also supplies the ERH values for each of the drying steps.  
1.2 This test method has not been evaluated for the influence of paint or wall covering materials on the indicated moisture content of a gypsum board or panel substrate.  
1.3 The values stated in SI (metric) are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SCOPE
1.1 These test methods describe three bench top test methods for measuring the thermophysical responses of gypsum boards and panels when exposed to high temperatures. The test methods are:  
1.1.1 High-temperature Core Cohesion—This test method evaluates the ability of the test specimen to withstand a specified mechanical strain while exposed to elevated temperature.  
1.1.2 High-temperature Shrinkage—This test method evaluates dimensional changes in the test specimen when exposed to elevated temperatures.  
1.1.3 High-temperature Thermal Insulation—This test method evaluates the rate of heat transfer through the thickness of the test specimen by measuring the length of time required to heat the center of the test specimen over a specified temperature rise when exposed to prescribed furnace conditions.  
1.2 The test methods appear in the following order:    
Test Method  
Section  
High-temperature Core Cohesion  
4  
High-temperature Shrinkage  
5  
High-temperature Thermal Insulation  
6  
1.3 Units—The values stated in either inch-pound units or SI units (given in parenthesis) are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 While these tests are useful for evaluating fire properties of gypsum boards and panels, they are not suitable for predicting the Test Methods E119 fire resistance performance of a specific gypsum protected assembly that has not previously been tested in accordance with Test Methods E119 and correlated to these tests.2  
1.5 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 These test methods appear in the following order:    
Sections  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in  
17  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Combined Water in  
18  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Organic Material  
20  
and Carbon Dioxide in Gypsum by High Temperature  
Weight Loss  
Alternative Procedure for Analysis for Calcium Sulfate by  
21  
Ammonium Acetate Method  
Alternative Procedure for Analysis for Sodium Chloride by  
22  
the Coulometric Method  
Determination of Sand in Set Plaster  
23  
Wood-fiber Content in Wood-fiber Gypsum Plaster  
24  
Optional Procedure for Analysis for Sodium by the Atomic  
25  
Absorption Method  
Optional Procedure for Analysis for Sodium by Flame  
26  
Photometry  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
27  
Ggypsum Panel Products—General Provisions  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
28  
Gypsum Panel Products by Gas Chromatograph  
Equipped with a Mass Spectrometer (GS/MS)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
29  
Gypsum Panel Products by Gas Chromatograph  
Equipped with an Electron Capture Detector (GC/ECD)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
30  
Gypsum Panel Products by High-performance Liquid  
Chromatograph Equipped with and Ultraviolet Detector  
(HPLC/UV)  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in these test methods.  
1.4 These text of this test method references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SIGNIFICANCE AND USE
4.1 Each abuse/impact property of abuse resistant wall panels is divided into three classification levels. The three levels of classification are: Level I, Level II, and Level III, with Level I representing the lowest rating for any given property. The test methods specified are utilized to establish the abuse-resistance classification of an abuse resistant wall panel. Each classification level requires a minimum overall specified performance. Any classified abuse resistant wall panel can be used at a classification level which is rated lower than the highest level qualified.
SCOPE
1.1 This standard establishes classifications of abuse resistance based on the abrasion resistance and impact resistance performance of nondecorated interior gypsum panel products and fiber-reinforced cement panels (abuse resistant wall panels).  
1.1.1 This standard is a method of classifying gypsum panel product performance and is not intended to classify systems for abuse resistance.  
1.2 The values stated in inch-pound and SI (metric) units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers molded glass fiber reinforced gypsum (GRG) parts, which are nonload-bearing, thin-shell, ornamental shapes for architectural embellishment of interior building construction. GRG parts shall be produced using the same materials used to make the composites in conformance with the referenced specification. GRG parts shall be manufactured from the mixed slurry or alpha gypsum cement, potable water and additives, and glass fiber reinforcement using either the hand lay-up or the spray-up process in a mold. GRG parts shall be produced according to approved shop drawings. Shop drawings shall specify part dimensions, quantities, recommended attachment points and methods, reinforcements, embedments, and tolerance. The material shall conform to the required mechanical properties and to the specified dimensions and tolerances of GRG parts.
SCOPE
1.1 This specification covers molded glass fiber reinforced gypsum (GRG) parts, which are nonload-bearing, thin-shell, ornamental shapes for architectural embellishment of interior building construction.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.3 The information presented refers to the molded surface of the part.  
1.4 The text of this standard references footnotes, which provide explanatory material. These footnotes shall not be considered as requirements of the standard.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form. If necessary, gypsum shall be crushed or ground, or both, to the size specified. Different test methods shall be performed in order to determine the chemical composition and physical properties of gypsum.
SCOPE
1.1 This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form and having the approximate chemical formula CaSO4·2H2O.  
1.2 The values stated in either inch-pound units or SI (metric) are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independently of the other. Values from the two systems shall not be combined.  
1.3 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers casting and molding plaster materials consisting essentially of calcined gypsum. The chemical composition of each plaster material should meet the required purity value. For samples, equal amounts of material should be taken from the outer and center of each package. Specimens shall also be tested for setting time, compressive strength and fineness.
SCOPE
1.1 This specification covers gypsum casting plaster and gypsum molding plaster materials consisting essentially of calcined gypsum.  
1.2 The values stated in either inch-pound or SI units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers glass fiber reinforced gypsum (GRG) composites suitable for producing GRG parts for non-loading bearings, thin sections, and ornamental shapes for architectural embellishment of interior building construction. Both the neat alpha gypsum cement and the resulting composite materials should conform to the specified physical and mechanical properties such as hardness, flexural strength, impact resistance, coefficient of linear thermal expansion, humidified deflection, surface burning characteristics, and nail pull resistance.
SCOPE
1.1 This specification covers glass fiber reinforced gypsum (GRG) composites having minimum properties and quality suitable to allow the production of GRG parts for non-loading bearing, thin section, ornamental shapes for architectural embellishment of interior building construction.  
1.2 The values stated in either inch-pound units or SI [metric] are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be independent of the other. Values from the two systems shall not be combined.  
1.3 The text of this standard references footnotes which provide explanatory material. These footnotes shall not be considered as requirements of the standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers four gypsum plasters; gypsum mill-mixed plaster, gypsum neat plaster, gypsum wood fibered plaster, and gypsum gauging plaster. The plasters shall contain a volume of aggregate not more than requirements prescribed. Compressive strength test and Vicat test shall be performed to meet the requirements.
SCOPE
1.1 This specification covers gypsum mill-mixed plaster, gypsum neat plaster, gypsum wood-fibered plaster, and gypsum gauging plaster.
Note 1: Specification C842 contains application procedures for interior gypsum plaster.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. This units statement does not apply to the appendix.  
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers various grades of anhydrous calcined gypsum known as gypsum Keene's cement, designed for use in the base and finish coats of gypsum plaster. The cement shall show a combined water content not more than the specified value when tested in accordance with the referenced test method. The cement shall conform to the required physical properties and shall undergo tests on setting time, compressive strength, and fineness.
SCOPE
1.1 This specification covers various grades of anhydrous calcined gypsum known as gypsum Keene's cement, designed for use in the base and finish coats of gypsum plaster.  
Note 1: The setting time is accelerated by the addition of other materials.
Note 2: Keene's cements are generally available as quick-setting and standard-setting types. However, various grades of gypsum Keene's cement of different fineness and setting time are available. Grades intended for use in scagliola castings and other special purposes should conform to the requirements of this specification in all respects except fineness and setting time.  
1.2 The values stated in either inch-pound or SI (metric) units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independently of the other. Values from the two systems shall not be combined.  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard.  
1.4 The following safety hazards caveat pertains only to the test method in the appendix of this specification:  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
These test methods cover the physical testing of gypsum, gypsum plasters, and gypsum concrete. Test methods are detailed for the following: precautions for physical tests, reagents and materials, free water, fineness, normal consistency of gypsum plaster and gypsum concrete, setting time, setting time (temperature rise method), compressive strength, and density. Materials include distilled or deionized water and standard sand. For each test method, the following are specified: significance and use, apparatus, and procedure.
SCOPE
1.1 These test methods cover the physical testing of gypsum, gypsum plasters, and gypsum concrete.  
1.2 The test methods appear in the following sections:    
Precautions for Physical Tests  
4  
Reagents and Materials  
5  
Free Water  
6  
Fineness  
7  
Normal Consistency of Gypsum Plaster  
8  
Normal Consistency of Gypsum Concrete  
9  
Setting Time  
10  
Setting Time (Temperature Rise Method)  
11  
Compressive Strength  
12  
Density  
13  
1.3 The values regarded as standard are either in inch-pound units or SI (metric). The values stated first shall be regarded as the standard. The values given in parentheses are mathematical conversions that are provided for information only and are not considered standard.  
1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) are not requirements of the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific precautionary statement, see X1.2.1.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SIGNIFICANCE AND USE
4.1 This guide is intended to provide guidance in determining the acceptability of scrap gypsum panel products and the resultant recycled gypsum.  
4.2 This guide is also intended for use by construction waste management teams in establishing the methods for segregating and collecting scrap.  
4.3 This guide does not dictate that any manufacturer must accept or use recycled gypsum in manufacturing gypsum panel products, nor does it mandate that scrap must be recycled by way of a closed-loop system.
Note 2: Closed-loop recycling is just one means to consider, as there are many pathways for landfill diversion.
SCOPE
1.1 This guide provides guidance for the handling, physical condition and compositional considerations for selecting scrap gypsum panel products and the recycled gypsum derived from that scrap for recycling into new gypsum panel products.  
1.2 This guide applies to material derived from gypsum panel products manufactured in accordance with Specifications C1177/C1177M, C1178/C1178M, C1278/C1278M, C1396/C1396M, and C1658/C1658M.  
1.3 This guide does not dictate the minimum amount of recycled gypsum a gypsum panel product manufacturer is required for use in producing new gypsum panel products.  
1.4 This guide does not address recycling of gypsum panel products from demolition or renovation projects.
Note 1: While these sources are outside the scope, they are not precluded from being recycled. This guide may be used as a basis for determination of basic criteria for any stream, as agreed upon between the contractor, recycler, and the gypsum panel product manufacturer.  
1.5 This guide does not address the suitability of recycled gypsum for other uses such as an agricultural amendment, for use in gypsum-based joint compounds or gypsum plaster, as an admixture or other uses of gypsum aside from gypsum panel products.  
1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
These test methods cover the physical testing of gypsum panel products. The test methos appear in the following order: (1) flexural strength (Method A); (2) core, end, and edge hardness (Method A); (3) nail pull resistance (Method A); (4) humidified deflection; (5) end squareness; (6) nominal thickness; (7) recessed- or tapered-edge depth; (8) width; (9) length; (10) water resistance of core-treated water repellant gypsum panel products; and (11) surface water resistance of gypsum panel products with water-repellant surfaces. For use in these test methods, a sample shall consist of gypsum panel products. Flexural properties of gypsum panel products are evaluated by supporting the specimen near the ends and applying a transverse load midway between the supports. The core, end, and edge hardness of gypsum panel products is evaluated by determining the force required to push a steel punch into the area of test. The ability of gypsum panel products to resist nail pull-through is evaluated by determining the loaded required to push a standard nail head through the product. The humidified deflection of gypsum panel products is evaluated by supporting a specimen that has been cut with the long dimension perpendicular to the machine detection, supported horizontally, and subjected to high humidity.
SCOPE
1.1 These test methods cover the physical testing of gypsum panel products.  
1.2 The test methods appear in the following order:    
Section  
Flexural Strength (Method A)  
7  
Core, End and Edge Hardness (Method A)  
8  
Nail Pull Resistance (Method A)  
9  
Flexural Strength (Method B)  
11  
Core, End and Edge Hardness (Method B)  
12  
Nail Pull Resistance (Method B)  
13  
Humidified Deflection  
14  
End Squareness  
15  
Nominal Thickness  
16  
Recessed- or Tapered Edge Depth  
17  
Width  
18  
Length  
19  
Water Resistance of Core-Treated Water-Repellent
Gypsum Panel Products  
20  
Surface Water Resistance of Gypsum Panel Products
with Water-Repellent Surfaces  
21  
1.3 The values stated in inch-pound units are to be regarded as standard with the exception of weight of samples in SI gram units. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.4 The text of these test methods references notes and footnotes that provide explanatory material. These notes and footnotes, excluding those in tables and figures, shall not be considered as requirements of these test methods.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification establishes the requirements for factory-laminated gypsum panel products designed for use either on walls, ceilings, or partitions as part of a sound control system, or as a gypsum stud or gypsum coreboard. It covers materials and manufacture, physical properties, dimensions and tolerances, finish and appearance, sampling, inspection, rejection, certification, packaging, marking, shipping, handling, and storage.
SCOPE
1.1 This specification covers the factory-laminated gypsum panel products designed either for use on walls, ceilings, or partitions as part of a sound control system; or for use as a gypsum stud or gypsum coreboard.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers sampling; inspection; rejection; certification; packaging and marking; and shipping, handling, and storage of gypsum panel products. When specified by the purchase agreement, samples of gypsum panel products shall be taken at the place of manufacture or at the destination. At least 0.25 % of the number of gypsum panel products in a shipment, but not less than three gypsum panel products, shall be so selected as to be representative of the shipment and shall constitute a sample for the purpose of tests by the purchaser or user. Inspection of the gypsum panel products shall be agreed upon between the purchaser and the producer or supplier as part of the purchase agreement. Rejection of gypsum panel products that fails to conform to the requirements specified shall be reported to the producer or supplier promptly and in writing. When specified in the purchase agreement, a producer's or supplier's report shall be furnished at the time of shipment certifying that the product is in compliance with the ASTM specification. Each gypsum panel product or package shall have legibly marked thereon the following: the thickness, the name of the producer or supplier, the brand name, if any, and the ASTM specification for the product. Gypsum panel products shall be shipped so as to be kept dry. Gypsum panel products shall be stored so as to be kept dry, preferably inside a building. Gypsum panel products shall be neatly stacked flat with care taken to prevent sagging or damage to edges, ends, and surfaces. Where necessary to store gypsum panel products outside, it shall be stacked flat, off the ground, supported on a level platform, and fully protected from weather and direct sunlight exposure.
SCOPE
1.1 This specification covers sampling; inspection; rejection; certification; packaging and marking; and shipping, handling, and storage of gypsum panel products shipped from the manufacturer.  
1.1.1 This specification does not cover storage or stocking on individual job sites.  
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers the glass mat gypsum panels. Glass mat interior gypsum panel, designed for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration. Glass mat coreboard gypsum panel, and glass mat shaftliner gypsum panel, designed for use as a base in multilayer systems or as gypsum studs or cores in semisolid or solid gypsum board partitions, or in shaftwall assemblies. Glass mat water-resistant gypsum panel, designed to be used as a base for the application of ceramic or plastic tile on walls or ceilings. Glass mat gypsum panel shall consist of a noncombustible core, gypsum, surfaced with glass mat partially or completely embedded in the core. Flexural strength, humidified deflection, null pull resistance, water resistance, and surface water absorption and shall conform to the physical property requirements of the materials specified.
SCOPE
1.1 This specification covers the glass mat gypsum panels described in 1.1.1 – 1.1.3.  
1.1.1 Glass mat interior gypsum panel, designed for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration.  
1.1.2 Glass mat coreboard gypsum panel, and glass mat shaftliner gypsum panel, designed for use as a base in multilayer systems or as gypsum studs or cores in semisolid or solid gypsum board partitions, or in shaftwall assemblies.  
1.1.3 Glass mat water-resistant gypsum panel, designed to be used as a base for the application of ceramic or plastic tile on walls or ceilings. This product is also suitable for decoration. (This is distinct from a coated glass mat water-resistant gypsum panel ASTM 1178.)  
1.2 Specifications applicable to all glass mat gypsum panels are located in Sections 1 – 4 and 8 – 10. Specifications applicable to specific glass mat gypsum panels are located in the following sections:    
Section  
Glass mat interior gypsum panel  
5  
Glass mat coreboard gypsum panel, and glass
mat shaftliner gypsum panel  
6  
Glass mat water-resistant gypsum panel  
7  
1.3 The values stated in either inch-pound units or SI (metric) are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers the minimum requirements for gypsum formboard designed for use as a permanent form for poured-in-place reinforced gypsum concrete roof decks. Gypsum formboard shall consist of a noncombustible core, essentially gypsum, either mineral or organic, synthetic or natural. The face surface shall be specifically treated to resist fungus growth. Specimens shall be subjected to the following test methods: flexural strength; humidified deflection; core, end, and edge hardness; and resistance to fungi. Specimens shall be tested to determine thickness, width, length, end squareness, and edges and ends. The surfaces of gypsum formboard shall be true and free from imperfections that would render it unfit for use with or without decoration.
SCOPE
1.1 This specification covers the minimum requirements for gypsum formboard designed for use as a permanent form for poured-in-place reinforced gypsum concrete roof decks.  
1.2 The values stated in either inch-pound units or SI (metric) are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.  
1.3 The text of this standard references notes which provide explanatory material. These notes shall not be considered requirements of the standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers calcined gypsum mixed at the mill with other ingredients to control working quality and setting time; specifically designed as a veneer plaster to be applied over gypsum base for veneer plasters, masonry or concrete surfaces, providing a surface ready for decoration. In addition, this specification covers test methods for determining the physical properties of gypsum veneer plasters. Veneer plasters shall be tested and shall conform to specified values of joint strength, bond strength, impact strength, and flexure.
SCOPE
1.1 This specification covers calcined gypsum mixed at the mill with other ingredients to control working quality and setting time; specifically designed as a veneer plaster to be applied over gypsum base for veneer plasters, masonry or concrete surfaces to a maximum thickness of 1/4 in. (6.4 mm) providing a surface ready for decoration.
Note 1: Specification C843 contains application procedures for gypsum veneer plaster.  
1.2 This specification covers test methods for determining the physical properties of gypsum veneer plasters and sets forth minimum requirements that must be met.  
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard.  
1.5 The following safety hazards caveat applies only to the Test Methods portion, Section 5 of this specification:  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers gypsum boards which include the following: gypsum wallboard for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration; predecorated gypsum board for use as the finished surfacing for walls, ceilings, or partitions; gypsum backing board, coreboard, and shaftliner board for use as a base in multilayer systems or as a gypsum stud or core in semisolid or solid gypsum board partitions, or in shaft wall assemblies; water-resistant gypsum backing board to be used as a base for the application of ceramic or plastic tile on walls or ceilings; exterior gypsum soffit board for exterior soffits and carport ceilings that are completely protected from contact with liquid water; gypsum sheathing board for use as sheathing on buildings; gypsum base for veneer plaster; gypsum lath for use as a base for gypsum plaster application; and gypsum ceiling board for interior ceilings and walls. Gypsum board shall consist of a noncombustible core, essentially gypsum, surfaced with paper bonded to the core. The specimens shall comply with the following required physical properties: core, end, and edge hardness; straightness of the edges and ends; length; tapered edge depth; flexural strength; humidified deflection; nail pull resistance; permeance; water resistance; and surface water absorption.
SCOPE
1.1 This specification covers the gypsum boards described in 1.1.1 – 1.1.9.
Note 1: Specifications C840, C841, C844 and C1280 contain application procedures for gypsum board.  
1.1.1 Gypsum wallboard,  designed for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration.  
1.1.2 Predecorated gypsum board, designed for use as the finished surfacing for walls, ceilings, or partitions.  
1.1.3 Gypsum backing board, coreboard, and shaftliner board, designed for use as a base in multilayer systems or as a gypsum stud or core in semisolid or solid gypsum board partitions, or in shaft wall assemblies.
Note 2: The terms backing board, coreboard, and shaftliner board refer to different end uses. The term gypsum backing board, as used in this specification, shall include gypsum coreboard and gypsum shaftliner board unless otherwise stated.  
1.1.4 Water-resistant gypsum backing board, designed primarily to be used as a base for the application of ceramic or plastic tile on walls or ceilings. This product is also suitable for decoration.  
1.1.5 Exterior gypsum soffit board, designed for use on exterior soffits and carport ceilings that are completely protected from contact with liquid water.  
1.1.6 Gypsum sheathing board,  designed for use as sheathing on buildings.  
1.1.7 Gypsum base for veneer plaster, designed for use as a base for the application of gypsum veneer plaster.  
1.1.8 Gypsum lath,  designed for use as a base for the application of gypsum plaster.  
1.1.9 Gypsum ceiling board,  designed for use on interior ceilings with framing spaced not more than 24 in. [610 mm] on center and that affords a surface suitable to receive water-based texture and other decoration. This product is also suitable for use on interior walls.  
1.2 Specifications applicable to all gypsum boards are located in Section 1 – 4 and 13 – 15. Specifications applicable to specific gypsum boards are located in the following sections:
Section  
Gypsum Wallboard, Predecorated Gypsum Board, and Laminated Gypsum Board  
5  
Gypsum backing board, gypsum coreboard,
gypsum shaftliner board  
6  
Water-resistant gypsum backing board  
7  
Exterior gypsum soffit board  
8  
Gypsum sheathing board  
9  
Gypsum base for veneer plaster  
10  
Gypsum lath  
11  
Gypsum Ceiling Board  
12  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each s...

ABSTRACT
This specification covers fiber-reinforced gypsum panel. The physical properties, dimensions and tolerances, and edges of interior fiber-reinforced gypsum panels, water-resistant fiber-reinforced gypsum backing panels, exterior fiber-reinforced gypsum soffit panels, water-resistant exterior fiber-reinforced gypsum sheathing panels, interior fiber-reinforced gypsum underlayment panels, and fiber-reinforced gypsum roof board panels are presented in details. The surfaces of the fiber-reinforced gypsum panels shall be true and free from imperfections that would render the panels unfit for use with or without decoration.
SCOPE
1.1 This specification covers fiber-reinforced gypsum panels described in 1.1.1 – 1.1.4.  
1.1.1 Interior Fiber-Reinforced Gypsum Panels  
are designed to be used for walls, ceilings, or partitions and affords a suitable surface to receive decoration.  
1.1.2 Water-Resistant Fiber-Reinforced Gypsum Backing Panels  
are designed primarily to be used as a base for the application of ceramic or plastic tile on walls or ceilings. This product is also suitable for decoration.  
1.1.3 Exterior Fiber-Reinforced Gypsum Soffit Panels  
are designed for use on exterior soffits and carport ceilings that are completely protected from contact with liquid water.  
1.1.4 Water-Resistant Exterior Fiber-Reinforced Gypsum Sheathing Panels  
are designed for use as sheathing on buildings.  
1.1.5 Interior Fiber-Reinforced Gypsum Underlayment Panels
are designed for use as a base for application of finished flooring materials.  
1.1.6 Fiber-Reinforced Gypsum Board Panels
are designed for use in roofing systems.  
1.2 Specifications applicable to all fiber-reinforced gypsum panels are located in Sections 1 – 4 and 11 – 13 except as modified by applicable product sections. Specifications applicable to specific panels are located in the following sections:    
Interior Fiber-Reinforced Gypsum Panels  
5  
Water-Resistant Fiber-Reinforced Gypsum Backing Panels  
6  
Exterior Fiber-Reinforced Gypsum Soffit Panels  
7  
Water-Resistant Exterior Fiber-Reinforced Gypsum Sheathing
Panels  
8  
Interior Fiber-Reinforced Gypsum Underlayment Panels  
9  
Fiber-Reinforced Gypsum Roof Board Panels  
10  
1.3 The values stated in either inch-pound units or SI (metric) are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independently of the other. Values from the two systems shall not be combined.  
1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 These test methods appear in the following order:    
Sections  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in  
17  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Combined Water in  
18  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Organic Material  
19  
and Carbon Dioxide in Gypsum by High Temperature  
Weight Loss  
Alternative Procedure for Analysis for Calcium Sulfate by  
20  
Ammonium Acetate Method  
Alternative Procedure for Analysis for Sodium Chloride by  
21  
the Coulometric Method  
Determination of Sand in Set Plaster  
22  
Wood-fiber Content in Wood-fiber Gypsum Plaster  
23  
Optional Procedure for Analysis for Sodium by the Atomic  
24  
Absorption Method  
Optional Procedure for Analysis for Sodium by Flame  
25  
Photometry  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
26  
Ggypsum Panel Products—General Provisions  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
27  
Gypsum Panel Products by Gas Chromatograph  
Equipped with a Mass Spectrometer (GS/MS)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
28  
Gypsum Panel Products by Gas Chromatograph  
Equipped with an Electron Capture Detector (GC/ECD)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
29  
Gypsum Panel Products by High-performance Liquid  
Chromatograph Equipped with and Ultraviolet Detector  
(HPLC/UV)  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in these test methods.  
1.4 These text of this test method references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 These test methods appear in the following order:    
Sections  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in  
17  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Combined Water in  
18  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Organic Material  
19  
and Carbon Dioxide in Gypsum by High Temperature  
Weight Loss  
Alternative Procedure for Analysis for Calcium Sulfate by  
20  
Ammonium Acetate Method  
Alternative Procedure for Analysis for Sodium Chloride by  
21  
the Coulometric Method  
Determination of Sand in Set Plaster  
22  
Wood-fiber Content in Wood-fiber Gypsum Plaster  
23  
Optional Procedure for Analysis for Sodium by the Atomic  
24  
Absorption Method  
Optional Procedure for Analysis for Sodium by Flame  
25  
Photometry  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
26  
Ggypsum Panel Products—General Provisions  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
27  
Gypsum Panel Products by Gas Chromatograph  
Equipped with a Mass Spectrometer (GS/MS)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
28  
Gypsum Panel Products by Gas Chromatograph  
Equipped with an Electron Capture Detector (GC/ECD)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
29  
Gypsum Panel Products by High-performance Liquid  
Chromatograph Equipped with and Ultraviolet Detector  
(HPLC/UV)  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in these test methods.  
1.4 These text of this test method references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 These test methods appear in the following order:    
Section(s)  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in Gypsum
Using a Moisture Balance  
17  
Alternative Procedure for Analysis of Combined Water in Gypsum
Using a Moisture Balance  
18  
Alternative Procedure for Analysis for Calcium Sulfate by
Ammonium Acetate Method  
19  
Alternative Procedure for Analysis for Sodium Chloride by the
Coulometric Method  
20  
Determination of Sand in Set Plaster  
21  
Wood-fiber Content in Wood-fiber Gypsum Plaster  
22  
Optional Procedure for Analysis for Sodium by the Atomic
Absorption Method  
23  
Optional Procedure for Analysis for Sodium by Flame Photometry  
24  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum
Panel Products—General Provisions  
25  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum
Panel Products by Gas Chromatograph Equipped with a Mass Spectrometer (GS/MS)  
26  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum
Panel Products by Gas Chromatograph
Equipped with an Electron Capture Detector (GC/ECD)  
27  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum
Panel Products by High-performance Liquid Chromatograph
Equipped with and Ultraviolet Detector (HPLC/UV)  
28  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers mill-mixed gypsum concrete, consisting essentially of calcined gypsum and suitable aggregate, requiring the addition of water only at the job site. Gypsum concrete is intended for use in the construction of poured-in-place roof decks or slabs. Two classes, based on the compressive strength and density, are covered. Gypsum concrete shall consist of calcined gypsum to which are added aggregates, wood chips, or wood shavings in proportion to meet the applicable requirements of this specification. Test method in this specification shall be performed in order to determine the physical properties of the gypsum concrete. Setting time is determined by the Vicat method.
SCOPE
1.1 This specification covers mill-mixed gypsum concrete, consisting essentially of calcined gypsum and suitable aggregate, requiring the addition of water only at the job site. Gypsum concrete is intended for use in the construction of poured-in-place roof decks or slabs. Two classes, based on the compressive strength and density, are covered.  
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers the glass mat gypsum panels. Glass mat interior gypsum panel, designed for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration. Glass mat coreboard gypsum panel, and glass mat shaftliner gypsum panel, designed for use as a base in multilayer systems or as gypsum studs or cores in semisolid or solid gypsum board partitions, or in shaftwall assemblies. Glass mat water-resistant gypsum panel, designed to be used as a base for the application of ceramic or plastic tile on walls or ceilings. Glass mat gypsum panel shall consist of a noncombustible core, gypsum, surfaced with glass mat partially or completely embedded in the core. Flexural strength, humidified deflection, null pull resistance, water resistance, and surface water absorption and shall conform to the physical property requirements of the materials specified.
SCOPE
1.1 This specification covers the glass mat gypsum panels described in 1.1.1 – 1.1.3.  
1.1.1 Glass mat interior gypsum panel, designed for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration.  
1.1.2 Glass mat coreboard gypsum panel, and glass mat shaftliner gypsum panel, designed for use as a base in multilayer systems or as gypsum studs or cores in semisolid or solid gypsum board partitions, or in shaftwall assemblies.  
1.1.3 Glass mat water-resistant gypsum panel, designed to be used as a base for the application of ceramic or plastic tile on walls or ceilings. This product is also suitable for decoration. (This is distinct from a coated glass mat water-resistant gypsum panel ASTM 1178.)  
1.2 Specifications applicable to all glass mat gypsum panels are located in Sections 1 – 4 and 8 – 10. Specifications applicable to specific glass mat gypsum panels are located in the following sections:    
Section  
Glass mat interior gypsum panel  
5  
Glass mat coreboard gypsum panel, and glass
mat shaftliner gypsum panel  
6  
Glass mat water-resistant gypsum panel  
7  
1.3 The values stated in either inch-pound units or SI (metric) are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SIGNIFICANCE AND USE
4.1 Each abuse/impact property of abuse resistant wall panels is divided into three classification levels. The three levels of classification are: Level I, Level II, and Level III, with Level I representing the lowest rating for any given property. The test methods specified are utilized to establish the abuse-resistance classification of an abuse resistant wall panel. Each classification level requires a minimum overall specified performance. Any classified abuse resistant wall panel can be used at a classification level which is rated lower than the highest level qualified.
SCOPE
1.1 This standard establishes classifications of abuse resistance based on the abrasion resistance and impact resistance performance of nondecorated interior gypsum panel products and fiber-reinforced cement panels (abuse resistant wall panels).  
1.1.1 This standard is a method of classifying gypsum panel product performance and is not intended to classify systems for abuse resistance.  
1.2 The values stated in inch-pound and SI (metric) units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers molded glass fiber reinforced gypsum (GRG) parts, which are nonload-bearing, thin-shell, ornamental shapes for architectural embellishment of interior building construction. GRG parts shall be produced using the same materials used to make the composites in conformance with the referenced specification. GRG parts shall be manufactured from the mixed slurry or alpha gypsum cement, potable water and additives, and glass fiber reinforcement using either the hand lay-up or the spray-up process in a mold. GRG parts shall be produced according to approved shop drawings. Shop drawings shall specify part dimensions, quantities, recommended attachment points and methods, reinforcements, embedments, and tolerance. The material shall conform to the required mechanical properties and to the specified dimensions and tolerances of GRG parts.
SCOPE
1.1 This specification covers molded glass fiber reinforced gypsum (GRG) parts, which are nonload-bearing, thin-shell, ornamental shapes for architectural embellishment of interior building construction.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.3 The information presented refers to the molded surface of the part.  
1.4 The text of this standard references footnotes, which provide explanatory material. These footnotes shall not be considered as requirements of the standard.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SIGNIFICANCE AND USE
5.1 This Standard Test Method is intended for use in calibrating hand-held meters to accurately read from approximately 30 to 90 % ERH. Moisture content is related to the ERH or water activity of a material.  
5.2 Hand-held meters provide a rapid means of sampling the moisture content of gypsum boards and panels during manufacture and for field inspection during and after building construction. However, these measurements are inferential, that is, electrical parameters are measured and compared against a calibration curve to obtain an indirect measure of moisture content. The electrical measurements are influenced by the actual moisture content, a number of other gypsum board and panel variables, environmental conditions, the geometry of the measuring probe, and the design of the meter. The maximum accuracy can only be obtained by an awareness of the effect of each parameter on the meter output and correction of readings as specified by these test methods.  
5.3 Electrical conductance and dielectric meters are not necessarily equivalent in their readings under the same conditions. When this test method is referenced, the type of meter that is being used must be reported with the relevant ranges for precision and bias as specified in this standard.  
5.4 Both types of meters are to be calibrated with respect to ERH as described in this standard.
SCOPE
1.1 This test method applies to the calibration of handheld moisture meters for gypsum board, glass faced gypsum panels and fiber-reinforced gypsum panels by means of electrical conductance and dielectric meters. The test uses wetted test specimens which are dried down in at least 5 steps to determine the moisture content based on the weight loss in comparison to the dry weight. The test also supplies the ERH values for each of the drying steps.  
1.2 This test method has not been evaluated for the influence of paint or wall covering materials on the indicated moisture content of a gypsum board or panel substrate.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SIGNIFICANCE AND USE
4.1 Each abuse/impact property of abuse resistant wall panels is divided into three classification levels. The three levels of classification are: Level I, Level II, and Level III, with Level I representing the lowest rating for any given property. The test methods specified are utilized to establish the abuse-resistance classification of an abuse resistant wall panel. Each classification level requires a minimum overall specified performance. Any classified abuse resistant wall panel can be used at a classification level which is rated lower than the highest level qualified.
SCOPE
1.1 This standard establishes classifications of abuse resistance based on the abrasion resistance and impact resistance performance of nondecorated interior gypsum panel products and fiber-reinforced cement panels (abuse resistant wall panels).  
1.1.1 This standard is a method of classifying gypsum panel product performance and is not intended to classify systems for abuse resistance.  
1.2 The values stated in inch-pound and SI (metric) units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers the glass mat gypsum panels. Glass mat interior gypsum panel, designed for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration. Glass mat coreboard gypsum panel, and glass mat shaftliner gypsum panel, designed for use as a base in multilayer systems or as gypsum studs or cores in semisolid or solid gypsum board partitions, or in shaftwall assemblies. Glass mat water-resistant gypsum panel, designed to be used as a base for the application of ceramic or plastic tile on walls or ceilings. Glass mat gypsum panel shall consist of a noncombustible core, gypsum, surfaced with glass mat partially or completely embedded in the core. Flexural strength, humidified deflection, null pull resistance, water resistance, and surface water absorption and shall conform to the physical property requirements of the materials specified.
SCOPE
1.1 This specification covers the glass mat gypsum panels described in 1.1.1 – 1.1.3.  
1.1.1 Glass mat interior gypsum panel, designed for use on walls, ceilings, or partitions and that affords a surface suitable to receive decoration.  
1.1.2 Glass mat coreboard gypsum panel, and glass mat shaftliner gypsum panel, designed for use as a base in multilayer systems or as gypsum studs or cores in semisolid or solid gypsum board partitions, or in shaftwall assemblies.  
1.1.3 Glass mat water-resistant gypsum panel, designed to be used as a base for the application of ceramic or plastic tile on walls or ceilings. This product is also suitable for decoration. (This is distinct from a coated glass mat water-resistant gypsum panel ASTM 1178.)  
1.2 Specifications applicable to all glass mat gypsum panels are located in Sections 1 – 4 and 8 – 10. Specifications applicable to specific glass mat gypsum panels are located in the following sections:    
Section  
Glass mat interior gypsum panel  
5  
Glass mat coreboard gypsum panel, and glass
mat shaftliner gypsum panel  
6  
Glass mat water-resistant gypsum panel  
7  
1.3 The values stated in either inch-pound units or SI (metric) are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers coated glass mat water-resistant gypsum backing panel designed for use on ceilings and walls in bath and shower areas as a base for the application of ceramic or plastic tile. Coated glass mat water-resistant gypsum backing panel shall consist of a noncombustible water-resistant gypsum core, surfaced with glass mat, partially or completely embedded in the core, and with a water-resistant coating on one surface. The specimens shall be tested for flexural strength, humidified deflection, core hardness, end hardness, edge hardness, nail pull resistance, water resistance, and surface water absorption. Coated glass mat water-resistant gypsum backing panel shall have surfaces true and free of imperfections that render the panel unfit for its designed use.
SCOPE
1.1 This specification covers coated glass mat water-resistant gypsum backing panel designed for use on ceilings and walls in bath and shower areas as a base for the application of ceramic or plastic tile.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Within the text, the SI units are shown in brackets.  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SIGNIFICANCE AND USE
4.1 Each abuse/impact property of abuse resistant wall panels is divided into three classification levels. The three levels of classification are: Level I, Level II, and Level III, with Level I representing the lowest rating for any given property. The test methods specified are utilized to establish the abuse-resistance classification of an abuse resistant wall panel. Each classification level requires a minimum overall specified performance. Any classified abuse resistant wall panel can be used at a classification level which is rated lower than the highest level qualified.
SCOPE
1.1 This standard establishes classifications of abuse resistance based on the abrasion resistance and impact resistance performance of nondecorated interior gypsum panel products and fiber-reinforced cement panels (abuse resistant wall panels).  
1.1.1 This standard is a method of classifying gypsum panel product performance and is not intended to classify systems for abuse resistance.  
1.2 The values stated in inch-pound and SI (metric) units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independent of the other. Values from the two systems shall not be combined.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
This specification covers the requirements for glass mat gypsum substrates designed to be used as exterior substrate or sheathing for weather barriers. The substrates shall consist of a noncombustible water-resistant gypsum core, surfaced with glass mat partially or completely embedded in the core. Materials shall be sampled, tested, and conform accordingly to specified physical property (flexural strength, humidified deflection, nail pull resistance, water resistance, and core, end, and edge hardness) and dimensional (thickness, width, length, end squareness, and edges) requirements.
SCOPE
1.1 This specification covers glass mat gypsum substrate, which is designed to be used as an exterior substrate for a weather barrier.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 The test methods appear in the following order:    
Sections  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in  
17  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Combined Water in  
18  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis for Calcium Sulfate by  
19  
Ammonium Acetate Method  
Alternative Procedure for Analysis for Sodium Chloride by  
20  
the Coulometric Method  
Determination of Sand in Set Plaster  
21  
Wood-Fiber Content in Wood-Fiber Gypsum Plaster  
22  
Optional Procedure for Analysis for Sodium by the Atomic  
23  
Absorption Method  
Optional Procedure for Analysis for Sodium by Flame  
24  
Photometry  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
25  
Ggypsum Panel Products—General Provisions  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
26  
Gypsum Panel Products by Gas Chromatograph  
Equipped with a Mass Spectrometer (GS/MS)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
27  
Gypsum Panel Products by Gas Chromatograph  
Equipped with an Electron Capture Detector (GC/ECD)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
28  
Gypsum Panel Products by High-performance Liquid  
Chromatograph Equipped with and Ultraviolet Detector  
(HPLC/UV)  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 The values stated in SI units are to be regarded as the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 The test methods appear in the following order:    
Sections  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in  
17  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Combined Water in  
18  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis for Calcium Sulfate by  
19  
Ammonium Acetate Method  
Alternative Procedure for Analysis for Sodium Chloride by  
20  
the Coulometric Method  
Determination of Sand in Set Plaster  
21  
Wood-Fiber Content in Wood-Fiber Gypsum Plaster  
22  
Optional Procedure for Analysis for Sodium by the Atomic  
23  
Absorption Method  
Optional Procedure for Analysis for Sodium by Flame  
24  
Photometry  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
25  
Ggypsum Panel Products—General Provisions  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
26  
Gypsum Panel Products by Gas Chromatograph  
Equipped with a Mass Spectrometer (GS/MS)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
27  
Gypsum Panel Products by Gas Chromatograph  
Equipped with an Electron Capture Detector (GC/ECD)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
28  
Gypsum Panel Products by High-performance Liquid  
Chromatograph Equipped with and Ultraviolet Detector  
(HPLC/UV)  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 The values stated in SI units are to be regarded as the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
These test methods cover the physical testing of gypsum panel products. The test methos appear in the following order: (1) flexural strength (Method A); (2) core, end, and edge hardness (Method A); (3) nail pull resistance (Method A); (4) humidified deflection; (5) end squareness; (6) nominal thickness; (7) recessed- or tapered-edge depth; (8) width; (9) length; (10) water resistance of core-treated water repellant gypsum panel products; and (11) surface water resistance of gypsum panel products with water-repellant surfaces. For use in these test methods, a sample shall consist of gypsum panel products. Flexural properties of gypsum panel products are evaluated by supporting the specimen near the ends and applying a transverse load midway between the supports. The core, end, and edge hardness of gypsum panel products is evaluated by determining the force required to push a steel punch into the area of test. The ability of gypsum panel products to resist nail pull-through is evaluated by determining the loaded required to push a standard nail head through the product. The humidified deflection of gypsum panel products is evaluated by supporting a specimen that has been cut with the long dimension perpendicular to the machine detection, supported horizontally, and subjected to high humidity.
SCOPE
1.1 These test methods cover the physical testing of gypsum panel products.  
1.2 The test methods appear in the following order:    
Section  
Flexural Strength (Method A)  
7  
Core, End and Edge Hardness (Method A)  
8  
Nail Pull Resistance (Method A)  
9  
Flexural Strength (Method B)  
11  
Core, End and Edge Hardness (Method B)  
12  
Nail Pull Resistance (Method B)  
13  
Humidified Deflection  
14  
End Squareness  
15  
Nominal Thickness  
16  
Recessed- or Tapered Edge Depth  
17  
Width  
18  
Length  
19  
Water Resistance of Core-Treated Water-Repellent
Gypsum Panel Products  
20  
Surface Water Resistance of Gypsum Panel Products
with Water-Repellent Surfaces  
21  
1.3 The values stated in inch-pound units are to be regarded as standard with the exception of weight of samples in SI gram units. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.4 The text of these test methods references notes and footnotes that provide explanatory material. These notes and footnotes, excluding those in tables and figures, shall not be considered as requirements of these test methods.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SCOPE
1.1 These test methods describe three bench top test methods for measuring the thermophysical responses of gypsum boards and panels when exposed to high temperatures. The test methods are:  
1.1.1 High-temperature Core Cohesion—This test method evaluates the ability of the test specimen to withstand a specified mechanical strain while exposed to elevated temperature.  
1.1.2 High-temperature Shrinkage—This test method evaluates dimensional changes in the test specimen when exposed to elevated temperatures.  
1.1.3 High-temperature Thermal Insulation—This test method evaluates the rate of heat transfer through the thickness of the test specimen by measuring the length of time required to heat the center of the test specimen over a specified temperature rise when exposed to prescribed furnace conditions.  
1.2 The test methods appear in the following order:    
Test Method  
Section  
High-temperature Core Cohesion  
4  
High-temperature Shrinkage  
5  
High-temperature Thermal Insulation  
6  
1.3 Units—The values stated in either inch-pound units or SI units (given in parenthesis) are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 While these tests are useful for evaluating fire properties of gypsum boards and panels, they are not suitable for predicting the Test Methods E119 fire resistance performance of a specific gypsum protected assembly that has not previously been tested in accordance with Test Methods E119 and correlated to these tests.2  
1.5 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 The test methods appear in the following order:    
Sections  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in  
17  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Combined Water in  
18  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis for Calcium Sulfate by  
19  
Ammonium Acetate Method  
Alternative Procedure for Analysis for Sodium Chloride by  
20  
the Coulometric Method  
Determination of Sand in Set Plaster  
21  
Wood-Fiber Content in Wood-Fiber Gypsum Plaster  
22  
Optional Procedure for Analysis for Sodium by the Atomic  
23  
Absorption Method  
Optional Procedure for Analysis for Sodium by Flame  
24  
Photometry  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
25  
Ggypsum Panel Products—General Provisions  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
26  
Gypsum Panel Products by Gas Chromatograph  
Equipped with a Mass Spectrometer (GS/MS)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
27  
Gypsum Panel Products by Gas Chromatograph  
Equipped with an Electron Capture Detector (GC/ECD)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
28  
Gypsum Panel Products by High-performance Liquid  
Chromatograph Equipped with and Ultraviolet Detector  
(HPLC/UV)  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 The values stated in SI units are to be regarded as the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 The test methods appear in the following order:    
Sections  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in  
17  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Combined Water in  
18  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis for Calcium Sulfate by  
19  
Ammonium Acetate Method  
Alternative Procedure for Analysis for Sodium Chloride by  
20  
the Coulometric Method  
Determination of Sand in Set Plaster  
21  
Wood-Fiber Content in Wood-Fiber Gypsum Plaster  
22  
Optional Procedure for Analysis for Sodium by the Atomic  
23  
Absorption Method  
Optional Procedure for Analysis for Sodium by Flame  
24  
Photometry  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
25  
Ggypsum Panel Products—General Provisions  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
26  
Gypsum Panel Products by Gas Chromatograph  
Equipped with a Mass Spectrometer (GS/MS)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
27  
Gypsum Panel Products by Gas Chromatograph  
Equipped with an Electron Capture Detector (GC/ECD)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
28  
Gypsum Panel Products by High-performance Liquid  
Chromatograph Equipped with and Ultraviolet Detector  
(HPLC/UV)  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 The values stated in SI units are to be regarded as the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ABSTRACT
These test methods cover the physical testing of gypsum panel products. The test methos appear in the following order: (1) flexural strength (Method A); (2) core, end, and edge hardness (Method A); (3) nail pull resistance (Method A); (4) humidified deflection; (5) end squareness; (6) nominal thickness; (7) recessed- or tapered-edge depth; (8) width; (9) length; (10) water resistance of core-treated water repellant gypsum panel products; and (11) surface water resistance of gypsum panel products with water-repellant surfaces. For use in these test methods, a sample shall consist of gypsum panel products. Flexural properties of gypsum panel products are evaluated by supporting the specimen near the ends and applying a transverse load midway between the supports. The core, end, and edge hardness of gypsum panel products is evaluated by determining the force required to push a steel punch into the area of test. The ability of gypsum panel products to resist nail pull-through is evaluated by determining the loaded required to push a standard nail head through the product. The humidified deflection of gypsum panel products is evaluated by supporting a specimen that has been cut with the long dimension perpendicular to the machine detection, supported horizontally, and subjected to high humidity.
SCOPE
1.1 These test methods cover the physical testing of gypsum panel products.  
1.2 The test methods appear in the following order:    
Section  
Flexural Strength (Method A)  
7  
Core, End and Edge Hardness (Method A)  
8  
Nail Pull Resistance (Method A)  
9  
Flexural Strength (Method B)  
11  
Core, End and Edge Hardness (Method B)  
12  
Nail Pull Resistance (Method B)  
13  
Humidified Deflection  
14  
End Squareness  
15  
Nominal Thickness  
16  
Recessed- or Tapered Edge Depth  
17  
Width  
18  
Length  
19  
Water Resistance of Core-Treated Water-Repellent
Gypsum Panel Products  
20  
Surface Water Resistance of Gypsum Panel Products
with Water-Repellent Surfaces  
21  
1.3 The values stated in inch-pound units are to be regarded as standard with the exception of weight of samples in SI gram units. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.4 The text of these test methods references notes and footnotes that provide explanatory material. These notes and footnotes, excluding those in tables and figures, shall not be considered as requirements of these test methods.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 The test methods appear in the following order:    
Sections  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in  
17  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Combined Water in  
18  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis for Calcium Sulfate by  
19  
Ammonium Acetate Method  
Alternative Procedure for Analysis for Sodium Chloride by  
20  
the Coulometric Method  
Determination of Sand in Set Plaster  
21  
Wood-Fiber Content in Wood-Fiber Gypsum Plaster  
22  
Optional Procedure for Analysis for Sodium by the Atomic  
23  
Absorption Method  
Optional Procedure for Analysis for Sodium by Flame  
24  
Photometry  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
25  
Ggypsum Panel Products—General Provisions  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
26  
Gypsum Panel Products by Gas Chromatograph  
Equipped with a Mass Spectrometer (GS/MS)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
27  
Gypsum Panel Products by Gas Chromatograph  
Equipped with an Electron Capture Detector (GC/ECD)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
28  
Gypsum Panel Products by High-performance Liquid  
Chromatograph Equipped with and Ultraviolet Detector  
(HPLC/UV)  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 The values stated in SI units are to be regarded as the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 The test methods appear in the following order:    
Sections  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in Gypsum Using a Moisture Balance  
17  
Alternative Procedure for Analysis of Combined Water in Gypsum Using a Moisture Balance  
18  
Alternative Procedure for Analysis for Calcium Sulfate by Ammonium Acetate Method  
19  
Alternative Procedure for Analysis for Sodium Chloride by the Coulometric Method  
20  
Determination of Sand in Set Plaster  
21  
Wood-Fiber Content in Wood-Fiber Gypsum Plaster  
22  
Optional Procedure for Analysis for Sodium by the Atomic Absorption Method  
23  
Optional Procedure for Analysis for Sodium by Flame Photometry  
24  
Determination of Orthorhombic Cyclooctasulfur (S8) in Ggypsum Panel Products—General Provisions  
25  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum Panel Products by Gas Chromatograph Equipped with a Mass Spectrometer (GS/MS)  
26  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum Panel Products by Gas Chromatograph Equipped with an Electron Capture Detector (GC/ECD)  
27  
Determination of Orthorhombic Cyclooctasulfur (S8) in Gypsum Panel Products by High-performance Liquid Chromatograph Equipped with and Ultraviolet Detector (HPLC/UV)  
28  
1.3 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 The values stated in SI units are to be regarded as the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

SCOPE
1.1 These test methods describe three bench top test methods for measuring the thermophysical responses of gypsum boards and panels when exposed to high temperatures. The test methods are:  
1.1.1 High-temperature Core Cohesion—This test method evaluates the ability of the test specimen to withstand a specified mechanical strain while exposed to elevated temperature.  
1.1.2 High-temperature Shrinkage—This test method evaluates dimensional changes in the test specimen when exposed to elevated temperatures.  
1.1.3 High-temperature Thermal Insulation—This test method evaluates the rate of heat transfer through the thickness of the test specimen by measuring the length of time required to heat the center of the test specimen over a specified temperature rise when exposed to prescribed furnace conditions.  
1.2 The test methods appear in the following order:    
Test Method  
Section  
High-temperature Core Cohesion  
4  
High-temperature Shrinkage  
5  
High-temperature Thermal Insulation  
6  
1.3 Units—The values stated in either inch-pound units or SI units (given in parenthesis) are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 While these tests are useful for evaluating fire properties of gypsum boards and panels, they are not suitable for predicting the Test Methods E119 fire resistance performance of a specific gypsum protected assembly that has not previously been tested in accordance with Test Methods E119 and correlated to these tests.2  
1.5 This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ABSTRACT
This specification covers fiber-reinforced gypsum panel. The physical properties, dimensions and tolerances, and edges of interior fiber-reinforced gypsum panels, water-resistant fiber-reinforced gypsum backing panels, exterior fiber-reinforced gypsum soffit panels, water-resistant exterior fiber-reinforced gypsum sheathing panels, interior fiber-reinforced gypsum underlayment panels, and fiber-reinforced gypsum roof board panels are presented in details. The surfaces of the fiber-reinforced gypsum panels shall be true and free from imperfections that would render the panels unfit for use with or without decoration.
SCOPE
1.1 This specification covers fiber-reinforced gypsum panels described in 1.1.1 – 1.1.4.  
1.1.1 Interior Fiber-Reinforced Gypsum Panels  
are designed to be used for walls, ceilings, or partitions and affords a suitable surface to receive decoration.  
1.1.2 Water-Resistant Fiber-Reinforced Gypsum Backing Panels  
are designed primarily to be used as a base for the application of ceramic or plastic tile on walls or ceilings. This product is also suitable for decoration.  
1.1.3 Exterior Fiber-Reinforced Gypsum Soffit Panels  
are designed for use on exterior soffits and carport ceilings that are completely protected from contact with liquid water.  
1.1.4 Water-Resistant Exterior Fiber-Reinforced Gypsum Sheathing Panels  
are designed for use as sheathing on buildings.  
1.1.5 Interior Fiber-Reinforced Gypsum Underlayment Panels
are designed for use as a base for application of finished flooring materials.  
1.1.6 Fiber-Reinforced Gypsum Board Panels
are designed for use in roofing systems.  
1.2 Specifications applicable to all fiber-reinforced gypsum panels are located in Sections 1 – 4 and 11 – 13 except as modified by applicable product sections. Specifications applicable to specific panels are located in the following sections:    
Interior Fiber-Reinforced Gypsum Panels  
5  
Water-Resistant Fiber-Reinforced Gypsum Backing Panels  
6  
Exterior Fiber-Reinforced Gypsum Soffit Panels  
7  
Water-Resistant Exterior Fiber-Reinforced Gypsum Sheathing Panels  
8  
Interior Fiber-Reinforced Gypsum Underlayment Panels  
9  
Fiber-Reinforced Gypsum Roof Board Panels  
10  
1.3 The values stated in either inch-pound units or SI (metric) are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independently of the other. Values from the two systems shall not be combined.  
1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard.

ABSTRACT
This specification covers mill-mixed gypsum concrete, consisting essentially of calcined gypsum and suitable aggregate, requiring the addition of water only at the job site. Gypsum concrete is intended for use in the construction of poured-in-place roof decks or slabs. Two classes, based on the compressive strength and density, are covered. Gypsum concrete shall consist of calcined gypsum to which are added aggregates, wood chips, or wood shavings in proportion to meet the applicable requirements of this specification. Test method in this specification shall be performed in order to determine the physical properties of the gypsum concrete. Setting time is determined by the Vicat method.
SCOPE
1.1 This specification covers mill-mixed gypsum concrete, consisting essentially of calcined gypsum and suitable aggregate, requiring the addition of water only at the job site. Gypsum concrete is intended for use in the construction of poured-in-place roof decks or slabs. Two classes, based on the compressive strength and density, are covered.  
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

ABSTRACT
This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form. If necessary, gypsum shall be crushed or ground, or both, to the size specified. Different test methods shall be performed in order to determine the chemical composition and physical properties of gypsum.
SCOPE
1.1 This specification covers gypsum, calcium sulfate combined with two molecules of water in crystalline form and having the approximate chemical formula CaSO4·2H2O.  
1.2 The values stated in either inch-pound units or SI (metric) are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independently of the other. Values from the two systems shall not be combined.  
1.3 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.

ABSTRACT
This specification covers glass fiber reinforced gypsum (GRG) composites suitable for producing GRG parts for non-loading bearings, thin sections, and ornamental shapes for architectural embellishment of interior building construction. Both the neat alpha gypsum cement and the resulting composite materials should conform to the specified physical and mechanical properties such as hardness, flexural strength, impact resistance, coefficient of linear thermal expansion, humidified deflection, surface burning characteristics, and nail pull resistance.
SCOPE
1.1 This specification covers glass fiber reinforced gypsum (GRG) composites having minimum properties and quality suitable to allow the production of GRG parts for non-loading bearing, thin section, ornamental shapes for architectural embellishment of interior building construction.  
1.2 The values stated in either inch-pound units or SI (metric) are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be independent of the other. Values from the two systems shall not be combined.  
1.3 The text of this standard references footnotes which provide explanatory material. These footnotes shall not be considered as requirements of the standard.