Roof-Drain-with-Gravel-Guard.pdf

This is a technical drawing specification document (Drawing No. 37) for a built-up roofing (BUR) system component, specifically detailing a hot/cold roof drain assembly with gravel guard. The drawing illustrates a 24-inch square drain configuration designed for flat roof applications and includes specifications for multiple roofing layers and materials. The primary components specified include a gravel retainer, two-ply stripping, roof deck per specification, lead/metal flashing, gravel surfacing, deck clamp, strainer/dome, clamping ring, and specified membrane sheet. The document includes a critical construction note requiring that all metal surfaces coming into contact with adhesives used in built-up roofing be primed prior to installation.

The drawing is presented at a not-to-scale (NTS) ratio and was created in 2023, appearing to be part of a larger set of construction documents. This technical specification would typically be used in conjunction with scope of work documents and project descriptions for roofing construction or renovation contracts. No pricing information, bid timeline, award dates, or contract terms are provided in this technical drawing document alone.