Structural · S-A6HJF

Cold-Formed Steel Soffit Joist Bridging and Solid Blocking

Materials

Timber / Wood

Elements

Beams Ceilings Roof / Floor Openings

Connections

Rebar Splice / Development

About this detail

Cold-formed steel soffit joists are stabilized with solid blocking at mid-span and continuous 1-1/2 inch by 33 mil strapping on the top and bottom flanges. The minimum 43 mil runner track for solid blocking is cut eight inches longer than the joist inside spacing, with flanges clipped four inches from each end and bent to form attachment tabs. Solid blocking is secured to each joist flange with two number 10-16 screws, and the runner track is fastened with one number 10-16 screw at each joist flange. Strapping starts, ends, and splices at solid blocking locations, fastened with eight number 10-16 screws on each side of the blocking. Additional solid blocking is placed adjacent to all openings and in the two end bays of the joist system.

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