1、Designation: C 1278/C 1278M 07aStandard Specification forFiber-Reinforced Gypsum Panel1This standard is issued under the fixed designation C 1278/C 1278M; the number immediately following the designation indicates theyear of original adoption or, in the case of revision, the year of last revision. A
2、 number in parentheses indicates the year of lastreapproval. A superscript epsilon (e) 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 Gypsum Panels are
3、 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. Thisproduct is also
4、 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 use as sheathi
5、ng 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 gypsumpanels
6、 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-Reinforced Gypsum
7、 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 standard. Withinthe
8、 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 andfootnotes shall not
9、 be considered as requirements of thestandard.2. Referenced Documents2.1 ASTM Standards:2C11 Terminology Relating to Gypsum and Related Build-ing Materials and SystemsC 22/C 22M Specification for GypsumC 473 Test Methods for Physical Testing of Gypsum PanelProductsC 645 Specification for Nonstructur
10、al Steel Framing Mem-bersC 1264 Specification for Sampling, Inspection, Rejection,Certification, Packaging, Marking, Shipping, Handling,and Storage of Gypsum Panel ProductsD 1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsE84 Test Method for Surface Burning
11、 Characteristics ofBuilding MaterialsE 96/E 96M 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 manufa
12、cturer-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 GypsumSpecific
13、ation C 22/C 22M.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 Sept. 15, 2007. Published O
14、ctober 2007. Originallyapproved in 1994. Last previous edition approved in 2007 as C 1278/C 1278M 07.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards D
15、ocument 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, paperboardstock, wood, or other orga
16、nic 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 gypsum panels, type X (spec
17、ial 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 side of load bearing 2 by 4
18、 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 and tested in accordance withT
19、est 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.4.5 Fiber-reinforced gypsum pa
20、nels 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 C 1264.4.6.1.1 Specimens shall be tested in ac
21、cordance with TestMethods C 473.4.6.2 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 from 6 to 24 ft1830 to 732
22、0 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-reinforced gypsum panel.5. Inte
23、rior 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 N12 12.7 110 49058 15.9 155
24、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 less than the following:Thick
25、ness, 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 C 1264.5.2.1.1 Specimens shall be tested in accordance with TestMethods C 473.5.2.2 ThicknessTh
26、e 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 shall be square with at
27、olerance 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 requirements for fiber-reinforc
28、ed gypsum panels. Inaddition, aluminum foil shall be bonded to the back surface.5.4.2 When tested in accordance with Test Methods E 96/E 96M, the permeance of foil-backed fiber-reinforced gypsumpanels shall be not more than 0.30 perm 17 ng/Pasm2(Desiccant Method) for the condition of 50 % relative h
29、umidityon 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 shall be tested faceup and
30、 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 of an inch, mm12 12.7
31、 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 more than 5 weight percen
32、tageafter 2-h immersion.C 1278/C 1278M 07a26.1.5 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 Panel:6.2.1 Specimens shall
33、 be taken from samples obtained inaccordance with Specification C 1264.6.2.1.1 Specimens shall be tested in accordance with TestMethods C 473.6.2.2 ThicknessThe nominal thickness shall be12 or58in. 12.7 or 15.9 mm with tolerances of 6164 in. 6 0.4mm, and with a local tolerance of 6132 in. 6 0.8 mm.6
34、.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,featured, tapered, or featured a
35、nd 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:Thickness, in. mm Method B, l
36、bf 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 nail pull resistance of no
37、t 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 C 1264.7.2.1.1 Specimens shall be tested in acco
38、rdance with TestMethods C 473.7.2.2 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 in. 3 mm under the spec
39、ified 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 Panels8.1 Physical Prope
40、rties 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 6908.1.2 Humidified Deflecti
41、onThe 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, in. mm Method B, lbf N
42、12 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 ExteriorFiber-Reinforc
43、ed Gypsum Sheathing Panels:8.2.1 Specimens shall be taken from samples obtained inaccordance with Specification C 1264.8.2.1.1 Specimens shall be tested in accordance with TestMethods C 473.8.2.2 ThicknessThe nominal thickness shall be from12 or58 in. 12.7 or 15.9 mm with tolerances of 6132 in. 6 0.
44、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 panel.8.3 EdgesThe e
45、dges 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 breaking load shall be not l
46、essthan 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 5359.2 Dimensions an
47、d Tolerances of Interior Fiber-ReinforcedGypsum Underlayment Panels:9.2.1 Specifications shall be taken from samples in accor-dance with Specification C 1264.C 1278/C 1278M 07a39.2.2 ThicknessThe nominal thickness shall be14 ,38 ,or12 in. 6.4, 9.5, or 12.7 mm with tolerance of 6 0.015 in.6 0.4 mm, a
48、nd 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 C 473.9.4.2 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 D 1037.9.5.2 The specimens shall have an average thickness swell-ing of no more t
