02730_SANITARY_SEWAGE_SYSTEMS.pdf

This document is a detailed technical specification section (Section 02730) for Sanitary Sewage Systems for the Bridgeport WPCA (Water Pollution Control Authority) in Bridgeport, Connecticut. The specification covers the comprehensive requirements for sanitary sewer piping, installation, materials, excavation, backfilling, testing, and related infrastructure work. It provides explicit technical guidelines for contractors, including detailed instructions for preparing, installing, and testing sanitary sewer systems, with specific requirements for pipe materials (such as PVC), concrete structures, metal castings, and installation procedures. The document outlines the full scope of work, including preparation, existing utility management, installation techniques, waste material disposal, cleaning, maintenance of sewer flow, and rigorous testing and inspection protocols.

The specification mandates strict compliance with various ASTM, AASHTO, and Conn-DOT standards for materials and construction methods. It includes precise technical requirements for pipe bedding, backfilling, concrete strength (4,000 psi for precast and 3,500 psi for cast-in-place), and detailed leakage testing parameters. The specification sets maximum infiltration/exfiltration rates for different pipe types, ranging from 50 to 150 gallons per mile/inch diameter per 24 hours. Contractors are required to submit comprehensive documentation, including complete materials lists, manufacturer specifications, and recommended installation procedures within 35 calendar days after contract award. The document emphasizes the contractor's responsibility for protecting existing utilities, maintaining sewer flow during construction, and ensuring the integrity and performance of the installed sanitary sewer system.