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This specification covers either untextured or surface textured non-asbestos fiber-cement flat sheets intended for exterior applications such as claddings, facades, curtain walls, soffits, and so forth. This specification does not apply to asbestos-cement flat sheets, gypsum-based boards or particle boards, discrete non-asbestos fiber-cement interior substrate sheets, fiber-mat reinforced non-asbestos cement interior substrate sheets, or cement-bonded particleboards. Flat sheets covered here are divided into two types according to their intended application, and four grades according to their flexural strengths. Type A sheets are intended for exterior applications subjected to the direct action of sun, rain, or snow, while Type B sheets are intended for exterior applications not subjected to the direct action of sun, rain, or snow. Sheets shall adhere to the following mechanical and physical requirements: flexural strength, density, dimension (nominal length, width, and thickness, squareness, and edge straightness), finish, and color.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.2 This specification is not applicable to asbestos-cement flat sheets (Specification C220), gypsum-based boards (Specifications C1396/C1396M, C1177/C1177M, C1178/C1178M), or particle boards (Terminology D1554) discrete non-asbestos fiber-cement interior substrate sheets (Specification C1288), fiber-mat reinforced non-asbestos cement interior substrate sheets (Specification C1325), or cement-bonded particleboards (Specification BS 5669: Part 4) and (ISO 8335).
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C220 Specification for Flat Asbestos-Cement Sheets
C1154 Terminology for Non-Asbestos Fiber-Reinforced Cement Products
C1177/C1177M Specification for Glass Mat Gypsum Substrate for Use as Sheathing
C1178/C1178M Specification for Coated Glass Mat Water-Resistant Gypsum Backing Panel
C1185 Test Methods for Sampling and Testing Non-Asbestos Fiber-Cement Flat Sheet, Roofing and Siding Shingles, and Clapboards
C1288 Specification for Discrete Non-Asbestos Fiber-Cement Interior Substrate Sheets
C1325 Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer Units
C1396/C1396M Specification for Gypsum Board
D1554 Terminology Relating to Wood-Base Fiber and Particle Panel Materials
E84 Test Method for Surface Burning Characteristics of Building Materials
âInternational StandardsISO8335 Cement-bonded Particleboards--Boards of Portland or Equivalent Cement Reinforced with Fibrous Wood Particles
ICS Number Code 91.100.40 (Products in fibre-reinforced cement)
UNSPSC Code 30151800(Siding and exterior wall materials)