Metal-Flashing,-Round-to-Square.pdf

This is a technical drawing specification document for built-up roofing metal flashing work. The drawing, designated as Drawing No. 20, provides detailed specifications for a round-to-square metal flashing assembly designed for roof penetrations. The assembly consists of a two-piece soldered construction in the field, featuring a fabricated round-to-square sheet metal component with a clamped storm collar and a bead of Tremco sealant. The installation sits on insulation and wood blocking as specified, with the existing wood curb serving as the base. The configuration accommodates an existing round penetration through the roof deck with a specified built-up roofing (BUR) membrane system.

The drawing is presented at a not-to-scale (NTS) format and represents 2023 specifications. No specific quantities, pricing terms, response deadlines, site visits, bidders' meetings, award dates, contract terms, set-asides, or funding information is provided in this technical drawing document. This specification serves as a reference guide for material selection and installation methodology for roofing penetration treatment rather than as a procurement or contract opportunity document.