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April 15, 2014 Cure-in-place Pipe Lining of Sanitary Sewers, 2014 Bid No. 2014-019 Bid Date: 4/22/14 ADDENDUM NO 1 Please make the following changes to the Specifications: SPECIFICATION REVISIONS: 1. Change the completion date in Div 10.02 to October 15, 2014. 2. Replace Division 10.04 MATERIALS with the following: The Contractor shall supply all materials, equipment, and labor as necessary to complete the Project in accordance with the Plans and these Specifications. The cure-in-place pipe material, design, installation and testing shall meet the requirements of ASTM F1216, latest version, for gravity sewer applications. The cure-in-place pipe shall be designed for a fully deteriorated design condition where the original pipe is assumed to provide no structural support. The cure-in-place pipe shall therefore be able to carry the following loads: 1. Soil 2. Groundwater, thereby minimizing infiltration (hydrostatic loads) 3. Other superimposed loads. (Static and dynamic loads) The CIPP shall meet the following minimum strength requirements for a 50-year design life: MINIMUM PHYSICAL PROPERTIES ASTM Polyester Filled Polyester Vinyl Ester Property Test Method System System System Flexural Strength D790 4,500 psi 4,500 psi 4,500 psi Flexural Modulus (initial) D790 250,000 psi 400,000 psi 250,000 psi Flexural Modulus (50-year) D790 125,000 psi 205,000 psi 125,000 psi END Department of Public Works • 103 Adams Ave • Lewiston, ME • 04240 • Voice Tel. [PHONE REDACTED] • Fax [PHONE REDACTED] • TTY/TDD [PHONE REDACTED] – www.lewistonmaine.gov Department of Public Works David A. Jones, P.E. Director