Plumbing-Vent-Model.pdf

This is a technical drawing specification document for plumbing vent flashing installation on built-up roofing systems. The document provides detailed standards for soft metal flashings used in hot and cold plumbing vent applications. Specifications include minimum material requirements of 4 lb sheet lead per square foot or 16 oz sheet copper, with provisions for asphalt-coated roofing felt when copper flashing is installed over iron or steel pipes to prevent galvanic corrosion. The drawing specifies installation requirements including a minimum 4-inch flange, 1-inch insertion depth into the plumbing vent stack, and placement of the flange in specified mastic sealant. For plumbing vents with diameters less than 2 inches, soft metal caps are required, also installed 1 inch down into the pipe using specified adhesive. The flashing must be set against two target plies of the specified BUR (built-up roofing) membrane with specified insulation and roof deck materials.

The document does not contain information regarding pricing terms, contract duration, renewal options, set-asides, incumbency status, funding sources, or other financial and administrative contract details. This drawing serves as a technical specification reference for construction or roofing contractors performing plumbing vent flashing work and would typically be incorporated as a specification exhibit within a larger construction contract or scope of work document.