ASTM_C_1705_-_C_1705M_-_09_2016.pdf

Designation:C1705/C1705M09(Reapproved 2016)Standard Specification forStructural Cementitious Panels1This standard is issued under the fixed designation C1705/C1705M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers structural cementitious panels.Structural cementitious panels are non-combustible,waterdurable,fiber reinforced inorganic composite panels intendedfor use as structural panels.Structural cementitious panels canbe used as floor,roof and wall sheathing when fastened tosupports spaced in accordance with the appropriate span rating.1.2 This specification defines minimum performance re-quirements for structural cementitious sheathing panels withrespect to structural performance,dimensional stabilityperformance,dimensional tolerance,noncombustibility,sur-face burning characteristics,long-term durability,waterdurability,mold resistance,density,moment capacity andbending stiffness.1.3 This specification also defines a policy to assure on-going product quality by detecting changes in panel propertiesthat may adversely affect panel performance.Required auditsof quality activities by a third party quality assurance agencyare also defined.1.4 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard.Within the text,theSI units are shown in brackets.The values stated in eachsystem may not be exact equivalents;therefore,each systemshall be used independently of the other.Combining valuesfrom the two systems may result in non-conformance with thestandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C1185 Test Methods for Sampling and Testing Non-Asbestos Fiber-Cement Flat Sheet,Roofing and SidingShingles,and ClapboardsC1704/C1704M Test Method for Sampling and TestingStructural Cementitious PanelsD1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel MaterialsD1761 Test Methods for Mechanical Fasteners in WoodD3273 Test Method for Resistance to Growth of Mold on theSurface of Interior Coatings in an Environmental Cham-berE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE136 Test Method for Behavior of Materials in a VerticalTube Furnace at 750CE330 Test Method for Structural Performance of ExteriorWindows,Doors,Skylights and Curtain Walls by UniformStatic Air Pressure DifferenceE661 Test Method for Performance of Wood and Wood-Based Floor and Roof Sheathing Under ConcentratedStatic and Impact LoadsG21 Practice for Determining Resistance of Synthetic Poly-meric Materials to Fungi3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 cross machine direction(XMD),nthe direction per-pendicular to the machine direction.3.1.2 edge,nedges of a panel refer to the long side of arectangular panel.For example,on a 4 by 8 ft panel,the edgesrefer to the sides of the panel that are 8 ft long.3.1.3 end,nthe end of a panel refers to the short side of arectangular panel.For example,on a 4 by 8 ft panel,the endrefers to the side of the panel that is 4 ft long.1This specification is under the jurisdiction ofASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.40 on GlassFiber Reinforced Concrete.Current edition approved April 1,2016.Published May 2016.Originallyapproved in 2009.Last previous edition approved in 2009 as C1705/C1705M-09.DOI:10.1520/C1705_C1705M-09R16.2For 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 Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.4 fiber reinforced inorganic composite,na compositematerial composed primarily of inorganic matrix materialsreinforced primarily with inorganic fibers.Inorganic aggre-gates may be combined with the inorganic matrix.3.1.5 machine direction(MD),nthe direction the boardtravels during manufacture.3.1.6 noncombustibility,nterm intended to describe prod-ucts that do not ignite and/or burn when subjected to fire.Testmethods are generally specified by reputable agencies such asASTM,Factory Mutual,Underwriters Lab Inc.,etc.3.1.7 performance standard,na standard for productsbased on performance.Performance is measured by tests thatapproximate end-use conditions.3.1.8 plant specification,nthe plant specification is uniqueto each qualified pr