Structural · S-ZM79H

Cold-Formed Steel Floor Joist Bridging and Solid Blocking Options

Materials

Elements

Beams Walls Floors / Slabs Connections / Plates Roof / Floor Openings

About this detail

Cold-formed steel floor joist bridging and solid blocking configurations utilize continuous flat straps and framing members. Option 1 utilizes track blocking with a minimum 4-inch track flange cut and bent to form a horizontal return, fastened with two number 10 sheet metal screws into the joist flange top and bottom each end. Option 2 utilizes a clip angle with a thickness matching the blocking and a length equal to the blocking depth minus one-half inch, fastened with two number 10 sheet metal screws into the joist web and into the blocking each end. Solid blocking is positioned using stud blocking with a depth equal to the joist depth minus two inches maximum, located as close to the bottom of the floor joist as practicable and secured with four number 10 sheet metal screws each blocking. A continuous 1-1/2 inch by 20-gauge minimum flat strap is installed taut and fastened with number 10 sheet metal screws at each joist, spaced at a maximum of 8 feet on center or at one-third points of the span.

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