ASTM C11-15a

Standard Terminology Relating to Gypsum and Related Building Materials and Systems

SCOPE
1.1 This standard covers terminology relating to gypsum and related building materials and systems. The terms are generically defined. More specific and expanded definitions may appear in appropriate standards.

General Information

• Status: Historical
• Publication Date: 30-Sep-2015
• ICS: 01.040.91 - Construction materials and building (Vocabularies)
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.91 - Terminology and Editorial

Relations

• Replaces: ASTM C11-15 - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 01-Oct-2015
• Replaced By: ASTM C11-16 - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 15-May-2016
• Referred By: ASTM C840-20 - Standard Specification for Application and Finishing of Gypsum Board
• Effective Date: 01-Oct-2015
• Referred By: ASTM C587-04(2018) - Standard Specification for Gypsum Veneer Plaster
• Effective Date: 01-Oct-2015
• Referred By: ASTM C1535-05(2023) - Standard Practice for Application of Exterior Insulation and Finish Systems Class PI
• Effective Date: 01-Oct-2015
• Referred By: ASTM C1032-18 - Standard Specification for Woven Wire Plaster Base
• Effective Date: 01-Oct-2015
• Referred By: ASTM C1921/C1921M-22 - Standard Test Method for Comparative Impact Testing of Gypsum Panel Outside 90° Corner Systems
• Effective Date: 01-Oct-2015
• Referred By: ASTM C1516-05(2023) - Standard Practice for Application of Direct-Applied Exterior Finish Systems
• Effective Date: 01-Oct-2015
• Referred By: ASTM C1264-19 - Standard Specification for Sampling, Inspection, Rejection, Certification, Packaging, Marking, Shipping, Handling, and Storage of Gypsum Panel Products
• Effective Date: 01-Oct-2015
• Referred By: ASTM C1467/C1467M-00(2021) - Standard Specification for Installation of Molded Glass Fiber Reinforced Gypsum Parts
• Effective Date: 01-Oct-2015
• Referred By: ASTM C1063-23 - Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster
• Effective Date: 01-Oct-2015
• Referred By: ASTM C1278/C1278M-17 - Standard Specification for Fiber-Reinforced Gypsum Panel
• Effective Date: 01-Oct-2015
• Referred By: ASTM C1047-19 - Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base
• Effective Date: 01-Oct-2015
• Referred By: ASTM C645-18 - Standard Specification for Nonstructural Steel Framing Members
• Effective Date: 01-Oct-2015
• Referred By: ASTM C1381/C1381M-23 - Standard Specification for Molded Glass Fiber Reinforced Gypsum Parts
• Effective Date: 01-Oct-2015

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C11 − 15a
StandardTerminology Relating to
1
Gypsum and Related Building Materials and Systems
This standard is issued under the fixed designation C11; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Wallboard to Wood Framing
C587 Specification for Gypsum Veneer Plaster
1.1 This standard covers terminology relating to gypsum
C588/C588M Specification for Gypsum Base for Veneer
and related building materials and systems. The terms are
3
Plasters (Withdrawn 2005)
generically defined. More specific and expanded definitions
C954 SpecificationforSteelDrillScrewsfortheApplication
may appear in appropriate standards.
of Gypsum Panel Products or Metal Plaster Bases to Steel
Studs from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in
2. Referenced Documents
Thickness
2
2.1 ASTM Standards:
C1007 Specification for Installation of Load Bearing (Trans-
C22/C22M Specification for Gypsum
verse and Axial) Steel Studs and Related Accessories
C28/C28M Specification for Gypsum Plasters
C1396/C1396M Specification for Gypsum Board
C35 Specification for Inorganic Aggregates for Use in Gyp-
E84 Test Method for Surface Burning Characteristics of
sum Plaster
Building Materials
C36/C36M Specification for Gypsum Wallboard (With-
E96/E96M Test Methods for Water Vapor Transmission of
3
drawn 2004)
Materials
C37/C37M Specification for Gypsum Lath (Withdrawn
E119 Test Methods for Fire Tests of Building Construction
3
2004)
and Materials
C52 Specification for Gypsum Partition Tile Or Block
E337 Test Method for Measuring Humidity with a Psy-
3
(Withdrawn 1982)
chrometer (the Measurement of Wet- and Dry-Bulb Tem-
C59/C59M Specification for Gypsum Casting Plaster and
peratures)
Gypsum Molding Plaster
3. Terminology
C61/C61M Specification for Gypsum Keene’s Cement
C317/C317M Specification for Gypsum Concrete
accelerator, n—a material that reduces setting time.
C318/C318M Specification for Gypsum Formboard
accessories, n—products fabricated for the purpose of forming
C472 Test Methods for Physical Testing of Gypsum, Gyp-
corners, edges, control joints, or decorative effects.
sum Plasters and Gypsum Concrete
C473 Test Methods for Physical Testing of Gypsum Panel
adhesive, n—a substance capable of holding materials together
Products
by surface attachment.
C475/C475M Specification for Joint Compound and Joint
admixture,n—amaterialotherthanwater,aggregates,hydrau-
Tape for Finishing Gypsum Board
lic cementitious material, and fiber reinforcement that is
C843 Specification for Application of Gypsum Veneer Plas-
usedasaningredienttomodifypropertiesandisaddedtothe
ter
batch before or during its mixture.
C557 Specification for Adhesives for Fastening Gypsum
aggregate, n—an inert granular material which may be added
to gypsum plasters. (C35)
1
This terminology is under the jurisdiction of ASTM Committee C11 on
all purpose compound, n—a compound formulated and
Gypsum and Related Building Materials and Systems and is the direct responsibility
of Subcommittee C11.91 on Terminology and Editorial.
manufactured to serve as both a taping and a finishing
Current edition approved Oct. 1, 2015. Published October 2015. Originally
compound.
approved in 1916. Last previous edition approved in 2015 as C11 – 15. DOI:
10.1520/C0011-15A.
anhydrite, n—the mineral consisting primarily of anhydrous
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
calcium sulfate, CaSO .
4
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
arris (of an arch), n—the outside corner or angle formed by
the ASTM website.
3
the meeting of a wall surface with the curved surface of an
The last approved version of this historical standard is referenced on
www.astm.org. arch (see Fig. 1).
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C11 − 15a
combined water, n—the water chemically held, as water of
crystallization, by the calcium sulfate dihydrate or hemihy-
drate crystal.
compressive strength, n—the maximum load sustained by a
standard specimen of a material when subjected to a crush-
ing force.
consistency, n—a property of a material determined by the
complete flow force relation. (C557)
consistency (normal), n—the number of millilitres of water
per 100 g of gypsum plaster or gypsum concrete required to
produce a mortar or a slurry of specified fluidity. (C472)
FIG. 1 Arris (of an
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C11 − 15 C11 − 15a
Standard Terminology Relating to
1
Gypsum and Related Building Materials and Systems
This standard is issued under the fixed designation C11; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This standard covers terminology relating to gypsum and related building materials and systems. The terms are generically
defined. More specific and expanded definitions may appear in appropriate standards.
2. Referenced Documents
2
2.1 ASTM Standards:
C22/C22M Specification for Gypsum
C28/C28M Specification for Gypsum Plasters
C35 Specification for Inorganic Aggregates for Use in Gypsum Plaster
3
C36/C36M Specification for Gypsum Wallboard (Withdrawn 2004)
3
C37/C37M Specification for Gypsum Lath (Withdrawn 2004)
3
C52 Specification for Gypsum Partition Tile Or Block (Withdrawn 1982)
C59/C59M Specification for Gypsum Casting Plaster and Gypsum Molding Plaster
C61/C61M Specification for Gypsum Keene’s Cement
C317/C317M Specification for Gypsum Concrete
C318/C318M Specification for Gypsum Formboard
C472 Test Methods for Physical Testing of Gypsum, Gypsum Plasters and Gypsum Concrete
C473 Test Methods for Physical Testing of Gypsum Panel Products
C475/C475M Specification for Joint Compound and Joint Tape for Finishing Gypsum Board
C843 Specification for Application of Gypsum Veneer Plaster
C557 Specification for Adhesives for Fastening Gypsum Wallboard to Wood Framing
C587 Specification for Gypsum Veneer Plaster
3
C588/C588M Specification for Gypsum Base for Veneer Plasters (Withdrawn 2005)
C954 Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studs
from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in Thickness
C1007 Specification for Installation of Load Bearing (Transverse and Axial) Steel Studs and Related Accessories
C1396/C1396M Specification for Gypsum Board
E84 Test Method for Surface Burning Characteristics of Building Materials
E96/E96M Test Methods for Water Vapor Transmission of Materials
E119 Test Methods for Fire Tests of Building Construction and Materials
E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
3. Terminology
accelerator, n—a material that reduces setting time.
accessories, n—products fabricated for the purpose of forming corners, edges, control joints, or decorative effects.
adhesive, n—a substance capable of holding materials together by surface attachment.
1
This terminology is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility of
Subcommittee C11.91 on Terminology and Editorial.
Current edition approved April 1, 2015Oct. 1, 2015. Published April 2015October 2015. Originally approved in 1916. Last previous edition approved in 20132015 as
C11 – 13.C11 – 15. DOI: 10.1520/C0011-15.10.1520/C0011-15A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C11 − 15a
admixture, n—a material other than water, aggregates, hydraulic cementitious material, and fiber reinforcement that is used as an
ingredient to modify properties and is added to the batch before or during its mixture.
aggregate, n—an inert granular material which may be added to gypsum plasters. (C35)
all purpose compound, n—a compound formulated and manufactured to serve as both a taping and a finishing compound.
anhydrite, n—the mineral consisting primarily of anhydrous calcium sulfate, CaSO .
4
arris (of an arch), n—the outside corner or angle formed by the meeting of a wall surface with the curved surface of an arch (see
Fig. 1).
base coat, n—any or all layers of plaster in place prior to application of finish coats.
DISCUSSION—
The first application is normally called a scratch coat and the second application is referred
...