ASTM C846-16 (R2021) pdf free download.Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing.
1 .1 This practice covers the requirements for storing, handling, and application of cellulosic fiber insulating board products.
1.2 The values stated in inch-pound units are to he 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.
3. Terminology
3. 1 Definitions of Terms Specific to This Standard.
3.1.1 exterior finish—the shingle. lap. or panel siding material, masonry veneer, or stucco applied over the sheathing as a protective, decorative exterior finish of the building.
3.1.2 fasteners—nails, staples, or screws used for applicalion of the sheathing.
3.1.3 framing members—those portions of the studs, headers, bracing, and blocking which serve to receive the sheathing. Framing members can be wood or metal.
3. 1 .4 regular wall sheathing—described in Definitions D1554 and Specification C208. It is 4 ft (1.22 m) wide with square-cut edges on all sides and ½ in. (12.7 mm) in thickness.
3. 1 .5 structural wall sheaihing—descnbed in Definitions D1554 and Specification C208. When installed in accordance with Section 7, it is considered a structural sheathing providing adequate racking resistance. It is 4 ft (1.22 m) wide and /2 in. (12.7 mm) or 25/12 in. (19.8 mm) in thickness with square-cut edges on all sides.
3. 1 .6 vertical application—sheathing applied with the long edges parallel to the studs.
4. Significance and Use
4.1 This standard provides recommendations for the installation in a safe and effective manner. Actual conditions may vary greatly, and additional care should be taken to ensure a safe and effective installation.
4.2 This standard presents requirements that are general in nature and considered practical. They are not intended as specific recommendations. The user should consult the manufacturer for recommended application methods and procedures.
4.3 This standard does not address the applicability of regulatory limitations. This is the responsibility of the user.
5. Materials
5.1 Sheathing shall conform to Specification C208.
5.2 Nails for application of sheathing to wood framing shall conform to Federal Specification FF-N-105-B. including Interim Amendment 4, and shall be in accordance with Table 1.ASTM C846 pdf download.