ASTM C840 PDF

ASTM C Standard Specification for Application and Finishing of Gypsum Board. ASTM C or GA provides the following requirements for installing control joints in gypsum board assemblies: Section (GA & GA. This specification covers requirements for the methods of application and finishing of gypsum board. Construction details for a specific assembly to achieve the.

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ASTM C 840—08 Specification for Application and Finishing of Gypsum Board (PDF Download)

These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the specification. Construction details for a specific assembly to achieve the required fire resistance shall be obtained from reports of fire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories.

For specific precautionary statements, see 4. Historical Version s – view previous versions of standard.

Distribution of the PDF is not permitted. Link to Active This link will always route to the current Active version of the standard. Control joints should be installed where ceiling framing or furring changes direction. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. In some cases when control joints are specified, the drawings are not coordinated with the specifications and the control joint details are frequently missed.

Application of Vinyl Faced Gypsum Board. This standard does not purport to address all of the safety concerns, if any, associated with its use.

Control joints are required in ceilings to limit areas to 2, square axtm. Moreover, gypsum assembly shall conform to framing size, fasteners spacing, ventilation, substrate, surface preparation, cutting, and installation application as indicated in the specification. Semi-solid Gypsum Board Partitions. This option is mobile friendly asrm compatible with all devices, including mobile tablets and smart phones. This specification covers requirements for the methods of application and finishing of gypsum board.

This specification covers requirements for the methods of application and finishing of gypsum board. Materials categorized under this specification include: The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. It is informational asrm and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.

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When “through wall” control joints are required in c804 assemblies, special details See drawing are necessary. Even if control joints do not appear to be specified they are often covered by reference specification. Download NGC app from your smartphone. This abstract is a brief summary of the referenced standard.

Where gypsum board f840 stored outside, it shall be off the ground, properly supported on a level platform and fully protected from the weather or direct sunlight exposure. All materials shall be kept dry.

We recommend users of early versions of Internet Explorer to update to Version 10 or later. Gypsum wallboard, as well as other building products and materials, is subject to some form of movement induced by changes in moisture, temperature or both. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

The requirement for control joints is addressed in both of these documents. Masonry or concrete walls shall be dry, free of dust, oil, or form release agents, protrusions or voids, or foreign matter that inhibit bond for adhesively applied gypsum board.

ASTM C – 01 Standard Specification for Application and Finishing of Gypsum Board

Architects sometimes fail to specify control joints. 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. A fire test of assemblies shall be conducted to determine a fire resistance rating required for gypsum board assembly. For a volume license the PDF is licensed to the person in which it is assigned. Control joints are frequently necessary to prevent cracking in gypsum wallboard. Moreover, gypsum assembly shall conform to framing size, fasteners spacing, ventilation, substrate, surface preparation, cutting, and installation application as indicated in the specification.

Isolation joints should be installed where structural elements such as slabs, columns or exterior walls can bear directly on non-load bearing partitions. Use on a local area network or other network is not permitted.

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All materials shall be kept dry. Construction details for a specific assembly to achieve the required fire resistance shall be obtained from reports of fire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories. One component of gypsum board construction often overlooked by architects and contractors is the control joint.

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A fire test of assemblies shall be conducted to determine a fire resistance rating required for gypsum board assembly. Materials categorized under this specification include: These details are based on Warnock Hersey International, Inc. You must have JavaScript enabled in your browser to utilize the functionality of this website. Cracking may also be caused by stresses resulting from building movement. Gypsum board shall be cut by scoring and breaking or by sawing, working from the face side.

Where doorjambs extend from floor to ceiling and are spaced less than 30 feet apart, no control joints are required. The PDF Download is licensed per individual in which the individual can place on up to four electronic devices for their personal use.

Masonry or concrete walls shall be dry, free of dust, oil, or form release agents, protrusions or voids, or foreign matter that inhibit bond for adhesively applied gypsum board. Gypsum board shall be cut by scoring and breaking or by sawing, working from the face side.

Where gypsum board is stored outside, it shall be off the ground, properly supported on a level platform and fully protected from the weather or direct sunlight exposure.

Additionally, control joints should be installed in ceilings to limit dimensions in either direction to 50 feet. Even in the best of circumstances, when control joints have been specified and properly detailed, estimators may neglect to include them in the bid, and project managers are faced with managing a job with unforeseen costs.