The Contractor shall submit to the Owner and Engineer, complete design calculations by a professional engineer for the liner that meet the requirements of ASTM F1216 or ASTM F1743 or ASTM F2019. The design shall be based on the following physical conditions of the existing pipe to be rehabilitated: All pipes shall be considered fully deteriorated. All pipes are subjected to a soil load of 120 lbs/cf with an H-20 live traffic load. The water table is assumed to be 3 feet below the ground surface. Pipe lengths and depths are shown on the Plans. The minimum pipe ovality is 2%. The minimum wall thickness for CIPP liner is 4.5 mm. The minimum flexural modulus of elasticity of the cured liner shall be 250,000 psi, with a minimum flexural strength of 4,500 psi as tested in accordance with ASTM D-790. DESCRIPTION Work Included: Provide all equipment necessary for the lining of sanitary sewer lines by the cured-in-place-pipe (CIPP) method and the reinstatement of sewer services. The system shall provide for the rehabilitation of pipes by the installation of a resin impregnated fiberglass or polyester tube patch inserted against the inside of the existing pipe utilizing air pressure (manhole-to-manhole lining) or an inflatable element and air pressure (short lining). Curing shall be accomplished by passing a UV light through the liner to cure the resin into a hard, impermeable pipe within a pipe. The CIPP should extend over the length of the repair in a continuous, tightfitting, watertight pipe within a pipe.
