Structural · S-APJFY

Roof Anchor and Framing Connection Detail

Materials

Steel Timber / Wood

Elements

Beams Roofs Trusses Anchors / Embeds Connections / Plates

Connections

Base Plate / Anchorage Embed Plate

About this detail

A roof anchor is secured to an anchor base plate using forty number 14-10 screws, two inches long, fully embedded into wood blocks. The assembly uses two 4x4 purlins spanning across at least four roof trusses, tied together with 4x12 framing blocking. Ten 8-inch SDS screws are driven into each end of each block, supplemented by eighteen 10d nails through the sheathing into each block for a total of thirty-six nails. Four HGA10KT framing ties are installed on each side of the blocking to the 4x4 members. Three-eighths-inch lag screws with a four-inch minimum thread length are pre-drilled and fastened into the roof joists, positioned above two-by-six blocking aligned under the 4x4 purlin block.

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