The assembly features a steel plate attached to a timber member using a lag screw that incorporates an unthreaded shank spanning the steel-to-wood interface. Dimensions indicate specific thread length requirements (4x bolt diameter minimum excluding tip length) and require predrilled lead holes for both the shank and threads. The detail provides spacing and penetration guidance for secure timber-to-steel connections in landscape or structural applications.
PREDRILL LEAD HOLE FOR SHANK AND THREADS, SEE PREDRILLED HOLE PROFILE BELOW UNTHREADED SHANK AT STEEL AND WOOD INTERFACE STD WASHER LAG SCREW WITH UNTHREADED SHANK PER DETAIL STEEL PLATE PER DETAIL THREAD LENGTH PER DETAIL, 4xBOLT DIA MIN (EXCLUDES TIP LENGTH) AT STEEL SIDE PLATE
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