Gypsum Board Ceiling Control Joints

4 7 3 7 control joints shall be installed where specified by the architect or designer as a design accent or architectural feature. This article discusses expansion contraction of drywall gypsum board and the drywall control joint or expansion joint products used to prevent these problems in building interiors. We cite drywall expansion joint installation specifications applicable construction.

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Drywall control joints or gypsum board expansion joints are used to control cracking in gypsum board ceilings walls.

Gypsum board ceiling control joints.

The maximum recommended control joint spacing for walls and ceilings without perimeter relief is 30 feet. Supplement to construction dimensions magazine. Receive your complimentary electronic issue by signing up below. A control joint shall be installed where a partition wall or ceiling traverses a construction joint expansion seismic or building control element in the base building structure i do not think.

4 7 3 control joints in the gypsum panel products shall be specified by the architect or designer where any of the conditions described in sections 4 7 3 1 through 4 7 3 7 exist. Gypsumation provides essential gypsum board information to a e c professionals contractors and code officials twice annually. 093 zinc control joint is typically installed from door header to ceiling from floor to ceiling in. Section 20 3 ga 4 7 3 control joints in the gypsum board shall be specified by the architect or designer where any of the conditions described in 20 3 1 20 3 5 exist ga 4 7 3 1 4 7 3 7 o section 20 3 1 ga 4 7 3 1 a control joint shall be installed where a partition wall or ceiling.

The parameters for placement of control joints are specified in astm c840 standard specification for application and finishing of gypsum board. With perimeter relief the maximum recommended control joint spacing is 50 feet. Control joints does not exceed 900 sq ft 84 m o section 20 3 5 ga 4 7 3 5 control joints in exterior ceilings and soffits shall be installed so that linear dimensions between control joints do not exceed 30 ft 9100 mm and total area between control joints does not exceed 900 sq ft 84 m. Drywall or veneer plaster control joint clarkdietrich 093 zinc control joint is applied between abutting gypsum panels and is used to relieve stresses of expansion and contraction of drywall and veneer plaster systems in large ceiling and wall expanses over 30 in length.

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