SC-102_Combination_Curb_And_Gutter_(2025).pdf

This is a technical construction drawing (DWG No. SC-102) from the City of Pittsburgh's Standards of Construction for a Combination Curb and Gutter infrastructure project. The detailed engineering specification provides a comprehensive blueprint for constructing a standard curb and gutter system, including precise dimensional requirements, material specifications, and installation guidelines. The drawing specifies a 12" deep structure using Class AA concrete, with #4 steel bars at 18" on center, and includes detailed specifications for expansion joints, geotextile underlayment, and a 4" perforated thermoplastic pipe for drainage.

The technical drawing prescribes specific construction materials including No. 57 coarse aggregate for the underlayment, 3/8" to 1/2" thick polystyrene joint material, and a polyurethane-based elastomeric sealant. The design includes provisions for proper drainage, with a slope matching adjacent roadways and a combination curb and gutter design that integrates with existing street pavement. The specification notes are comprehensive, referencing Penndot Publication 408, Section 704, and providing guidance on concrete class, joint spacing, and measurement protocols for construction teams implementing this municipal infrastructure standard.