SA-202_Trench_Restoration_(1993).pdf

This document is a City of Pittsburgh engineering standard drawing (DWG No. SA-202) dated July 1, 1993, detailing technical specifications for street pavement trench repavement details. The drawing provides comprehensive technical diagrams for slab replacement and trench repaving techniques for both reinforced and unreinforced pavement, specifically outlining precise construction methods for street repair and restoration. The technical specifications include detailed cross-sectional views showing existing pavement conditions, saw cut locations, concrete replacement procedures, base layer preparations, and specific requirements for trench width, material placement, and reinforcement techniques.

The drawing provides specific engineering guidance for municipal infrastructure repair, with particular attention to concrete slab replacement and trench restoration methods. The technical details include specifications for concrete thickness, expansion bolt placement, reinforcement requirements, and excavation limitations. The document is specifically tailored for street pavement repairs in urban environments, with careful consideration given to matching existing pavement conditions, ensuring structural integrity, and maintaining consistent road surface quality. The standard drawing serves as a technical reference for construction crews and contractors performing street repair work in the City of Pittsburgh, establishing uniform standards for infrastructure maintenance and rehabilitation.