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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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.

Isolation joints should be installed where structural elements such as slabs, columns or exterior walls can bear directly on non-load bearing partitions. For a volume license the PDF is licensed to the person in which it is assigned.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Even if control joints do not appear to wstm specified they are often covered by reference specification. Moreover, gypsum assembly shall conform to framing size, fasteners spacing, ventilation, substrate, surface preparation, cutting, and installation application as indicated in the specification.

Moreover, gypsum assembly qstm conform to framing size, fasteners spacing, ventilation, aztm, surface preparation, cutting, and installation application as indicated in the specification.

These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the specification. This standard does not purport to c80 all of the safety concerns, if any, associated with its use. All materials shall be kept dry.

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.

Control joints should be installed where ceiling framing or furring changes direction. All materials shall be kept dry. Where doorjambs extend from floor to ceiling and are spaced less than 30 feet apart, no control joints are required.

Gypsum board shall be cut by scoring and breaking or by sawing, working from the face side.

Materials categorized under this specification include: Control joints are atm at doorjambs, extending from door head to ceiling. Use on a local area network or other network is not permitted.

The requirement for control joints is addressed in both of these documents. A fire test of assemblies shall be conducted to determine a fire resistance rating required for gypsum board assembly. Architects sometimes fail to specify control joints. 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.

This specification covers requirements for the methods of application and finishing of gypsum board.

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

You must have JavaScript enabled in your browser to utilize the functionality of this website. Gypsum board assembly shall conform to acoustical tests of the specification where sound control is required. 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.

This specification covers requirements for the methods of application and finishing of gypsum board. 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. 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.

Control joints should be employed in long expanses of partitions at foot intervals, from floor to ceiling. Gypsum board assembly shall conform to acoustical tests of the specification where sound control is required. For specific precautionary statements, see 4. In some cases when control joints are specified, the drawings are not coordinated with the specifications and the control joint details adtm frequently missed. Masonry or concrete walls shall be dry, free asym dust, oil, or form release agents, protrusions or voids, or foreign matter that inhibit bond for qstm applied gypsum board.

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. Gypsum board shall be cut by scoring and breaking or by sawing, working from the face side. A fire test of assemblies shall be conducted to determine a fire resistance rating required for gypsum board assembly. Semi-solid Gypsum Board Aatm.

Control joints are frequently necessary to prevent cracking in gypsum wallboard. Application of Vinyl Faced Gypsum Board.

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

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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.

To relieve the stresses that occur as a result of such movement, control joints are required in both partitions and ceilings. Materials categorized under this specification include: Additionally, control ast, should be installed in ceilings to limit dimensions in either direction to 50 feet.

ASTM C – 18b Standard Specification for Application and Finishing of Gypsum Board

These details are based on Warnock Hersey International, Inc. Cracking may also be caused by stresses resulting from building movement.

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