Drywall control joints or gypsum board expansion joints are used to control cracking in gypsum board ceilings walls.
Gypsum board ceiling control joints.
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.
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.
093 zinc control joint is typically installed from door header to ceiling from floor to ceiling in.
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.
With perimeter relief the maximum recommended control joint spacing is 50 feet.
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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.
4 7 3 7 control joints shall be installed where specified by the architect or designer as a design accent or architectural feature.
Supplement to construction dimensions magazine.
We cite drywall expansion joint installation specifications applicable construction.
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.