ASTM C1278/C1278M-99

Standard Specification for Fiber-Reinforced Gypsum Panel

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.
1.2 Specifications applicable to all fiber-reinforced gypsum panels are located in Sections 1-4 and 9-11 except as modified by applicable product sections. Specifications applicable to specific panels are located in the following sections:Interior Fiber-Reinforced Gypsum Panels5Water-Resistant Fiber-Reinforced Gypsum Backing Panels6Exterior Fiber-Reinforced Gypsum Soffit Panels7Water-Resistant Exterior Fiber-Reinforced Gypsum Sheathing Panels8
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.

General Information

• Status: Historical
• Publication Date: 09-May-2001
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.01 - Specifications and Test Methods for Gypsum Products

Relations

• Replaced By: ASTM C1278/C1278M-00 - Standard Specification for Fiber-Reinforced Gypsum Panel
• Effective Date: 10-May-2001
• Referred By: ASTM C1535-05(2023) - Standard Practice for Application of Exterior Insulation and Finish Systems Class PI
• Effective Date: 10-May-2001
• Referred By: ASTM F1482-21 - Standard Practice for Installation and Preparation of Panel Type Underlayments to Receive Resilient Flooring
• Effective Date: 10-May-2001
• Referred By: ASTM C1881-20 - Standard Guide for Closed-Loop Recycling of Scrap Gypsum Panel Products
• Effective Date: 10-May-2001
• Referred By: ASTM C1789-14(2018) - Standard Test Method for Calibration of Hand-Held Moisture Meters on Gypsum Panels
• Effective Date: 10-May-2001
• Referred By: ASTM C1397-13(2019) - Standard Practice for Application of Class PB Exterior Insulation and Finish Systems (EIFS) and EIFS with Drainage
• Effective Date: 10-May-2001
• Referred By: ASTM C1516-05(2023) - Standard Practice for Application of Direct-Applied Exterior Finish Systems
• Effective Date: 10-May-2001
• Referred By: ASTM C1280-18 - Standard Specification for Application of Exterior Gypsum Panel Products for Use as Sheathing
• Effective Date: 10-May-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1278/C 1278M – 99
Standard Specification for
Fiber-Reinforced Gypsum Panels
This standard is issued under the fixed designation C 1278/C 1278M; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Materials and Manufacture
1.1 This specification covers fiber-reinforced gypsum pan- 4.1 Fiber-reinforced gypsum panels shall consist essentially
els designed to be used for walls, ceilings, or partitions and of gypsum with fibers dispersed throughout.
affords a suitable surface to receive decoration. 4.1.1 Gypsum—Specification C 22.
1.2 The values stated in either inch-pound units or SI 4.1.2 Fibers—Cellulose, derived from paper, paperboard
(metric) are to be regarded separately as the standard. Within stock, wood, or other organic material.
the text, the SI units are shown in brackets. The values stated 4.2 The back surface of foil-backed fiber-reinforced gypsum
in each system shall be used independently of the other. Values panels shall in addition be covered with aluminum foil.
from the two systems shall not be combined. 4.3 Fiber-reinforced gypsum panels, type X (special fire-
1.3 The text of this specification references notes and resistant) designates fiber-reinforced gypsum panels complying
footnotes that provide explanatory material. These notes and with this specification that provide not less than 1-h fire
5 3
footnotes shall not be considered as requirements of the resistance for panels ⁄8-in. [15.9-mm] thick or ⁄4-h fire-
standard. resistance for panels ⁄2-in. [12.7-mm] thick, applied parallel
with and on each side of load bearing 2 by 4 wood studs spaced
2. Referenced Documents
16 in. [406 mm] on center with 6d coated nails, 1 ⁄8-in.
2.1 ASTM Standards: [48-mm] long, 0.0915-in. [2.3-mm] diameter shank, ⁄4-in.
C 11 Terminology Relating to Gypsum and Related Build-
[6.4-mm] diameter heads, spaced 7 in. [178 mm] on center
ing Materials and Systems with fiber-reinforced gypsum panel joints staggered 16 in. [406
C 22 Specification for Gypsum
mm] on each side of the partition and tested in accordance with
C 473 Test Methods for Physical Testing of Gypsum Board Test Methods E 119.
Products and Gypsum Lath
NOTE 1—Consult producers for independent test data on assembly
C 645 Specification for Nonstructural Steel Framing Mem-
details and fire resistance classifications for other types of construction.
bers
See official fire test reports for assembly particulars, materials, and
C 1264 Specification for Sampling, Inspection, Rejection,
classification.
Certification, Packaging, Marking, Shipping, Handling,
4.4 Fiber-reinforced gypsum panels shall have a flame
and Storage of Gypsum Board
spread index of not more than 25 when tested in accordance
E 84 Test Method for Surface Burning Characteristics of
with Test Method E 84.
Building Materials
E 96 Test Methods for Water Vapor Transmission of Mate-
5. Mechanical Properties
rials
5.1 Specimens shall be taken from the samples obtained in
E 119 Test Methods for Fire Tests of Building Construction
accordance with Specification C 1264.
and Materials
5.2 Specimens shall be tested in accordance with Test
Methods C 473.
3. Terminology
5.2.1 Flexural Strength—The specimens shall have an av-
3.1 Definitions—Definitions of terms shall be in accordance
erage breaking load of not less than the following when tested
with Terminology C 11.
face up or face down:
Thickness, in. [mm] Breaking Load, lbf [N], Bearing Edges Parallel
or Perpendicular to Panel Length, Method B
⁄4 [6.4] 50 [222]
This specification is under the jurisdiction of ASTM Committee C-11 on
⁄16 [7.9] 65 [289]
Gypsum and Related Building Materialsand is the direct responsibility of Subcom-
⁄8 [9.5] 75 [334]
mittee C11.01on Specifications and Test Methods for Gypsum Products.
⁄2 [12.7] 110 [490]
Current edition approved Dec. 10, 1999. Published February 2000. Originally
⁄8 [15.9] 155 [689]
published as C 1278 – 94. Last previous edition C 1278/C 1278M – 96.
Annual Book of ASTM Standards, Vol 04.01.
5.2.2 Humidified Deflection—The specimens shall have an
Annual Book of ASTM Standards, Vol 04.07.
average deflection of not more than the following:
Annual Book of ASTM Standards, Vol 04.06.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
C 1278/C 1278M
permissible variations in the nominal thickness of 6 ⁄64 in. [0.4
Thickness, in. [mm] Humidified Deflection, Eighths of an in. [mm]
⁄4 [6.4] not applicable
mm] and permissible local variations of 6 ⁄32 in. [0.8 mm]
⁄16 [7.9] not applicable
from the nominal thickness.
⁄8 [9.5] not applicable
6.2.2 Width—The nominal width shall be 24 to 96 in. [610
⁄2 [12.7] 3 [10]
⁄8 [15.9] 2 [6] 3
to 2440 mm], with permissible variation of ⁄32 in. [3 mm]
under the specified width.
5.2.3 Core, End and Edge Hardness—The specimens shall
6.2.3 Length—The nominal length shall be from 6 to 24 ft
have an average hardness of not less than 20 lbf [89 N] when
[1830 to 7315 mm], with permissible variations of 6 ⁄4 in. [6
tested in accordance with Method B.
mm] from the specified length.
5.2.4 Nail Pull Resistance—The specimens shall have an
6.2.4 The average thickness of the edge of recessed or
average nail pull resi
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