1、Designation: C1278/C1278M 07a (Reapproved 2011)Standard Specification forFiber-Reinforced Gypsum Panel1This standard is issued under the fixed designation C1278/C1278M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the year of la
2、st revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers fiber-reinforced gypsum pan-els described in 1.1.1-1.1.4.1.1.1 Interior Fiber-Reinforced Gyps
3、um Panels are de-signed to be used for walls, ceilings, or partitions and affordsa suitable surface to receive decoration.1.1.2 Water-Resistant Fiber-Reinforced Gypsum BackingPanels are designed primarily to be used as a base for theapplication of ceramic or plastic tile on walls or ceilings. Thispr
4、oduct is also suitable for decoration.1.1.3 Exterior Fiber-Reinforced Gypsum Sofft Panels aredesigned for use on exterior soffits and carport ceilings that arecompletely protected from contact with liquid water.1.1.4 Water-Resistant Exterior Fiber-Reinforced GypsumSheathing Panels are designed for u
5、se as sheathing on build-ings.1.1.5 Interior Fiber-Reinforced Gypsum UnderlaymentPanels are designed for use as a base for application of finishedflooring materials.1.1.6 Fiber-Reinforced Gypsum Board Panels are designedfor use in roofing systems.1.2 Specifications applicable to all fiber-reinforced
6、 gypsumpanels are located in Sections 1-4 and 11-13 except as modifiedby applicable product sections. Specifications applicable tospecific panels are located in the following sections:Interior Fiber-Reinforced Gypsum Panels 5Water-Resistant Fiber-Reinforced Gypsum Backing Panels 6Exterior Fiber-Rein
7、forced Gypsum Soffit Panels 7Water-Resistant Exterior Fiber-Reinforced Gypsum Sheathing Panels 8Interior Fiber-Reinforced Gypsum Underlayment Panels 9Fiber-Reinforced Gypsum Roof Board Panels 101.3 The values stated in either inch-pound units or SI(metric) are to be regarded separately as the standa
8、rd. Withinthe text, the SI units are shown in brackets. The values statedin each system shall be used independently of the other. Valuesfrom the two systems shall not be combined.1.4 The text of this specification references notes andfootnotes that provide explanatory material. These notes andfootno
9、tes shall not be considered as requirements of thestandard.2. Referenced Documents2.1 ASTM Standards:2C11 Terminology Relating to Gypsum and Related BuildingMaterials and SystemsC22/C22M Specification for GypsumC473 Test Methods for Physical Testing of Gypsum PanelProductsC645 Specification for Nons
10、tructural Steel Framing Mem-bersC1264 Specification for Sampling, Inspection, Rejection,Certification, Packaging, Marking, Shipping, Handling,and Storage of Gypsum Panel ProductsD1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsE84 Test Method for Surface Bu
11、rning Characteristics ofBuilding MaterialsE96/E96M Test Methods for Water Vapor Transmission ofMaterialsE119 Test Methods for Fire Tests of Building Constructionand Materials3. Terminology3.1 DefinitionsDefinitions of terms shall be in accordancewith Terminology C11.3.1.1 nominal thickness, nthe man
12、ufacturer-stated frac-tional value of thickness of the gypsum panel product ex-pressed in decimal value to the nearest one-thousandth (0.001)of an inch.4. Materials and Manufacture4.1 Fiber-reinforced gypsum panels shall consist essentiallyof gypsum with fibers dispersed throughout.4.1.1 GypsumSpeci
13、fication C22/C22M.1This specification is under the jurisdiction of ASTM Committee C11 onGypsum and Related Building Materials and Systems and is the direct responsi-bility of Subcommittee C11.01 on Specifications and Test Methods for GypsumProducts.Current edition approved Dec. 1, 2011. Published Ju
14、ne 2012. Originallyapproved in 1994. Last previous edition approved in 2007 as C1278/C1278M 07a.DOI: 10.1520/C1278_C1278M-07AR11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume informati
15、on, refer to the standards Document Summary page onthe ASTM website.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.4.1.2 FibersCellulose, derived from paper, paperboa
16、rdstock, wood, or other organic material.4.2 The back surface of foil-backed fiber-reinforced gypsumpanels shall in addition be covered with aluminum foil.4.3 Water-resistant fiber-reinforced gypsum panels shall betreated with a material that imparts water resistance through-out.4.4 Fiber-reinforced
17、 gypsum panels, type X (special fire-resistant) designates fiber-reinforced gypsum panels complyingwith this specification that provide not less than 1-h fireresistance rating for panels58-in. 15.9-mm thick or34-h fireresistance rating for panels12-in. 12.7-mm thick, appliedparallel with and on each
18、 side of load bearing 2 by 4 woodstuds spaced 16 in. 406 mm on center with 6d coated nails,178-in. 48-mm long, 0.0915-in. 2.3-mm diameter shank,14-in. 6.4-mm diameter heads, spaced 7 in. 178 mm on centerwith fiber-reinforced gypsum panel joints staggered 16 in. 406mm on each side of the partition an
19、d tested in accordance withTest Methods E119.NOTE 1Consult producers for independent test data on assemblydetails and fire resistance ratings for other types of construction. See firetest reports or listings from recognized fire testing laboratories forassembly particulars, materials, and ratings.4.
20、5 Fiber-reinforced gypsum panels shall have a flamespread index of not more than 25 when tested in accordancewith Test Method E84.4.6 Physical Properties, Dimensions, and Tolerances ofGypsum Panel:4.6.1 Specimens shall be taken from samples obtained inaccordance with Specification C1264.4.6.1.1 Spec
21、imens shall be tested in accordance with TestMethods C473.4.6.2 Core, End, and Edge HardnessThe specimens shallhave an average hardness of not less than 20 lbf 90 N whentested in accordance with Method B.4.6.3 Edges and EndsThe edges and ends shall bestraight.4.6.4 LengthThe nominal length shall be
22、from 6 to 24 ft1830 to 7320 mm, with a tolerance of 614 in. 6 mm fromthe specified length.4.6.5 Tapered Edge DepthThe average thickness of theedge of recessed or tapered edge shall be not less than 0.020 in.0.51 mm but not more than 0.090 in. 2.29 mm less than theaverage thickness of the fiber-reinf
23、orced gypsum panel.5. Interior Fiber-Reinforced Gypsum Panels5.1 Physical Properties of Interior Fiber-Reinforced Gyp-sum Panels:5.1.1 Flexural StrengthThe specimens shall be tested faceup and face down. The average breaking load shall be not lessthan the following:Thickness, in. mm Method B, lbf N1
24、2 12.7 110 49058 15.9 155 6905.1.2 Humidified DeflectionThe specimens shall have anaverage deflection of not more than the following:Thickness, in. mm Deflection, eighths of an inch, mm12 12.7 3 1058 15.9 2 65.1.3 Nail Pull ResistanceThe specimens shall have anaverage nail pull resistance of not les
25、s than the following:Thickness, in. mm Method B, lbf N12 12.7 120 53558 15.9 145 6455.2 Dimensions and Tolerances of Interior Fiber-ReinforcedGypsum Panel:5.2.1 Specimens shall be taken from samples in accordancewith Specification C1264.5.2.1.1 Specimens shall be tested in accordance with TestMethod
26、s C473.5.2.2 ThicknessThe thickness shall be12 or58 in. 12.7 or15.9 mm with tolerances of 6 0.015 in. 6 0.40 mm, andwith a local tolerance of 6 0.030 in. 6 0.80 mm.5.2.3 WidthThe width shall be up to 54 in. 1370 mm,with a tolerance of332 in. 3 mm under the specified width.5.2.4 End SquarenessCorners
27、 shall be square with atolerance of 618 in. 6 3 mm in the full width of the panel.5.3 EdgesThe edges shall be either square, beveled,featured, tapered, or featured and tapered.5.4 Foil-Backed Fiber-Reinforced Gypsum Panels:5.4.1 Foil-backed fiber-reinforced gypsum panels shall meetall of the require
28、ments for fiber-reinforced gypsum panels. Inaddition, aluminum foil shall be bonded to the back surface.5.4.2 When tested in accordance with Test Methods E96/E96M, the permeance of foil-backed fiber-reinforced gypsumpanels shall be not more than 0.30 perm 17 ng/Pasm2(Desiccant Method) for the condit
29、ion of 50 % relative humidityon the face of the panel and 0 % relative humidity on thefoil-covered back side of the panel.6. Water-Resistant Fiber-Reinforced Gypsum BackingPanels6.1 Physical Properties of Water-Resistant Fiber-ReinforcedGypsum Backing Panels:6.1.1 Flexural StrengthThe specimens shal
30、l be tested faceup and face down. The average breaking load shall be not lessthan the following:Thickness, in. mm Method B, lbf N12 12.7 110 49058 15.9 155 6906.1.2 Humidified DeflectionThe specimens shall have anaverage deflection of not more than the following:Thickness, in. mm Deflection, eighths
31、 of an inch, mm12 12.7 3 1058 15.9 2 66.1.3 Nail Pull ResistanceThe specimens shall have anaverage nail pull resistance of not less than the following:Thickness, in. mm Method B, lbf N12 12.7 120 53558 15.9 145 6456.1.4 Water ResistanceThe specimens shall have an aver-age water absorption of not mor
32、e than 5 weight percentageafter 2-h immersion.C1278/C1278M 07a (2011)26.1.5 Surface Water AbsorptionThe specimens shall havean average face surface water absorption of not more than 1.6g after two hours of elapsed time.6.2 Dimensions and Tolerances of Water-Resistant Fiber-Reinforced Gypsum Backing
33、Panel:6.2.1 Specimens shall be taken from samples obtained inaccordance with Specification C1264.6.2.1.1 Specimens shall be tested in accordance with TestMethods C473.6.2.2 ThicknessThe nominal thickness shall be12 or58in. 12.7 or 15.9 mm with tolerances of 6164 in. 6 0.4mm, and with a local toleran
34、ce of 6132 in. 6 0.8 mm.6.2.3 WidthThe width shall be up to 54 in. 1370 mm,with a tolerance of332 in. 3 mm under the specified width.6.2.4 End SquarenessCorners shall be square with atolerance of 618 in. 6 3 mm in the full width of the panel.6.3 EdgesThe edges shall be either square, beveled,feature
35、d, tapered, or featured and tapered.7. Exterior Fiber-Reinforced Gypsum Soffit Panels7.1 Physical Properties of Exterior Fiber-Reinforced Gyp-sum Sofft Panels:7.1.1 Flexural StrengthThe specimens shall be tested faceup and face down. The average breaking load shall be not lessthan the following:Thic
36、kness, in. mm Method B, lbf N12 12.7 110 49058 15.9 155 6907.1.2 Humidified DeflectionThe specimens shall have anaverage deflection of not more than the following:Thickness, in. mm Deflection, eighths of an inch, mm12 12.7 3 1058 15.9 2 67.1.3 Nail Pull ResistanceThe specimens shall have anaverage n
37、ail pull resistance of not less than the following:Thickness, in. mm Method B, lbf N12 12.7 120 53558 15.9 145 6457.2 Dimensions and Tolerances of Exterior Fiber-Reinforced Gypsum Sofft Panel:7.2.1 Specimens shall be taken from samples obtained inaccordance with Specification C1264.7.2.1.1 Specimens
38、 shall be tested in accordance with TestMethods C473.7.2.2 ThicknessThe nominal thickness shall be12 or58in. 12.7 or 15.9 mm with tolerances in the thickness of 6164in. 6 0.4 mm, and with a local tolerance of 6132 in. 6 0.8mm.7.2.3 WidthThe width shall be up to 54 in. 1370 mm,with a tolerance of332
39、in. 3 mm under the specified width.7.2.4 End SquarenessCorners shall be square with atolerance of 618 in. 6 3 mm in the full width of the panel.7.3 EdgesThe edges shall be either square, beveled,featured, tapered, or featured and tapered.8. Water-Resistant Exterior Fiber-Reinforced GypsumSheathing P
40、anels8.1 Physical Properties of Water-Resistant Exterior Fiber-Reinforced Gypsum Sheathing Panels:8.1.1 Flexural StrengthThe specimens shall be tested faceup and face down. The average breaking load shall be not lessthan the following:Thickness, in. mm Method B, lbf N12 12.7 110 49058 15.9 155 6908.
41、1.2 Humidified DeflectionThe specimens shall have anaverage deflection of not more than the following:Thickness, in. mm Deflection, eighths of an inch, mm12 12.7 3 1058 15.9 2 68.1.3 Nail Pull ResistanceThe specimens shall have anaverage nail pull resistance of not less than the following:Thickness,
42、 in. mm Method B, lbf N12 12.7 120 53558 15.9 145 6458.1.4 Water Resistance of Water-Resistant Exterior Fiber-Reinforced Gypsum Sheathing PanelThe specimens shallhave an average water absorption of not more than 10 weightpercentage after 2-h immersion.8.2 Dimensions and Tolerances of Water-Resistant
43、 ExteriorFiber-Reinforced Gypsum Sheathing Panels:8.2.1 Specimens shall be taken from samples obtained inaccordance with Specification C1264.8.2.1.1 Specimens shall be tested in accordance with TestMethods C473.8.2.2 ThicknessThe nominal thickness shall be from12 or58 in. 12.7 or 15.9 mm with tolera
44、nces of 6132 in. 6 0.8mm, and with a local tolerance of 6116 in. 6 1.6 mm.8.2.3 WidthThe nominal width shall be 24 or 48 in. 610or 1220 mm, with a tolerance of18 in. 3.2 mm under thespecified width.8.2.4 End SquarenessCorners shall be square with atolerance of 618 in. 6 3 mm in the full width of the
45、 panel.8.3 EdgesThe edges shall be either square or V-tongueand groove.9. Interior Fiber-Reinforced Gypsum UnderlaymentPanels9.1 Physical Properties of Interior Fiber-Reinforced Gyp-sum Underlayment Panels:9.1.1 Flexural StrengthThe specimens shall be tested faceup and face down. The average breakin
46、g load shall be not lessthan the following:Thickness, in. mm Method B, lbf N14 6.4 40 17538 9.5 70 31012 12.7 110 4909.1.2 Nail Pull resistanceThe specimens shall have anaverage nail pull resistance of not less than the following:Thickness, in. mm Method B, lbf N14 6.4 70 31038 9.5 90 40012 12.7 120
47、 5359.2 Dimensions and Tolerances of Interior Fiber-ReinforcedGypsum Underlayment Panels:9.2.1 Specifications shall be taken from samples in accor-dance with Specification C1264.C1278/C1278M 07a (2011)39.2.2 ThicknessThe nominal thickness shall be14 ,38 ,or12 in. 6.4, 9.5, or 12.7 mm with tolerance
48、of 6 0.015 in.6 0.4 mm, and with a local tolerance of 6 0.030 in. 6 0.8mm.9.2.3 End Squareness Corners shall be square with atolerance of 6 0.125 in. 6 3 mm in the full width of thepanel.9.3 EdgesEdges shall be square.9.4 Water Absorption9.4.1 Specimens shall be tested in accordance with TestMethods C473.9.4.2 Water absorption shall not exceed 10 %.9.5 Thickness Swelling9.5.1 Specimens shall be tested in accordance with Thick-ness Swelling in Test Methods D1037.9.5.2 The specimens shall have an average thicknes
