ASTM C840 PDF

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

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Gypsum board assembly shall conform to acoustical tests of the specification where sound control is required.

Materials categorized under this specification include: Isolation joints should be installed where structural elements such as slabs, columns or exterior walls can bear directly on non-load bearing partitions. These details are based on Warnock Hersey International, Inc.

Semi-solid Gypsum Board Partitions. Work Item s – proposed revisions of this standard. 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. Control joints should be employed in long expanses of partitions at foot intervals, from floor to ceiling.

All materials shall be kept dry.

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

JavaScript seems to be disabled in your browser. 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. Cracking may also be caused by stresses resulting from building movement. 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 abstract is a brief summary of the referenced c84.

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

This option is mobile friendly and compatible with all devices, including mobile tablets and smart phones. Advice on specifing control joints in drywall construction is included in the following Tech Talk information below.

The requirement for control joints is addressed in both of these documents. Construction details for aastm 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.

Moreover, gypsum assembly shall conform to framing size, fasteners spacing, ventilation, substrate, surface preparation, cutting, and installation application as indicated in the specification. The PDF Download is licensed per individual in which the individual can place on up atm four electronic devices for their c804 use. For specific precautionary statements, see 4.

Use on a local area network or other network is not permitted.

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 be specified they are often ast by reference specification. One component of gypsum board construction often overlooked by architects and contractors is the control joint.

Gypsum board assembly shall conform to acoustical tests of the specification where sound control is required. All materials shall be kept dry. 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.

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. When “through wall” control joints are required in fire-rated assemblies, special details See drawing are necessary.

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Control joints are recommended at doorjambs, extending from door head to ceiling. 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. 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.

Architects sometimes asttm to specify control joints. In some cases when control joints are specified, the drawings are not coordinated with the specifications and the control joint details are frequently missed.

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

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 are frequently necessary to prevent cracking in gypsum wallboard. Gypsum board shall be cut by scoring f840 breaking or by sawing, working from the face side.

Moreover, gypsum assembly shall conform to framing size, fasteners spacing, ventilation, substrate, surface preparation, cutting, and c8400 application as indicated in the specification.

A fire test of assemblies shall be conducted to determine a fire resistance rating required for gypsum board assembly. 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.