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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When “through wall” control joints are required in fire-rated ast, special details See drawing are necessary. Isolation joints should be installed where structural elements such as slabs, columns or exterior walls can bear directly on non-load bearing partitions.

Construction details for a aetm 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. This standard does not purport to address all of the safety concerns, if any, associated with its use. Download NGC app from your smartphone. Use on a local area network or other network is not permitted. Control joints should be employed in long expanses of partitions at foot intervals, from floor to ceiling.

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.

The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

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

Work Item s – proposed revisions of this standard. These details are based on Warnock Hersey International, Inc. Control joints should be installed where ceiling framing or furring changes direction. Moreover, gypsum assembly shall conform to framing size, fasteners spacing, ventilation, substrate, surface preparation, cutting, and installation application as indicated in the specification.

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

Control joints are frequently necessary to prevent cracking in gypsum wallboard. Architects sometimes fail to specify control joints. All materials shall be kept dry.

Advice on specifing control joints in drywall construction is included in the following Tech Talk information below. We recommend users of early versions of Internet Explorer to update to Version 10 or later.

Gypsum board assembly shall conform to acoustical tests of the specification where sound control is required. Gypsum board shall be cut by scoring and breaking or by sawing, working from the face side. Link to Active This link will always route to the current Active version of the standard.

This abstract is a brief summary of the referenced standard. This specification covers requirements for the methods of application and finishing of gypsum board. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Additionally, control joints should be installed in ceilings to limit dimensions in either direction to 50 feet.

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

In some cases when control joints are specified, the drawings are not coordinated with the specifications and the control joint details are frequently c8840. 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.

JavaScript seems to be disabled in your browser. A fire test of assemblies shall be conducted to determine a fire resistance rating required for gypsum board assembly. adtm

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

Historical Version s – view previous versions of standard. The PDF Download is licensed per individual in which the individual can place on up to four electronic devices for their personal use. Moreover, wstm assembly shall conform to framing size, fasteners spacing, ventilation, substrate, surface preparation, cutting, and installation application as indicated in the specification.

Control joints are required in ceilings to limit areas to 2, square feet.

Semi-solid Gypsum Board Partitions. This specification covers requirements for the methods of application and finishing of gypsum board. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the specification.

You must have JavaScript enabled in your browser to utilize the functionality of this website. Even if control joints do not appear to be specified they are often covered by reference specification. Gypsum board assembly shall conform to acoustical tests of the specification where sound control is required. The requirement for control joints is addressed in both of these documents.

This aastm is mobile friendly and compatible with all devices, including mobile tablets and smart phones. Sstm 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. 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 zstm a job with unforeseen costs.

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