Agenda - Council - 06/27/2017 - Laserfiche WebLink

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(4) Air -entrained concrete shall be used in the production of all units. Air content shall be maintained within the range of five (5) to seven (7) percent (%). (5) A Certificate of Compliance shall be furnished with each shipment of precast manhole and catch basin sections stating that the materials furnished have been tested and are in compliance with the specification requirements. (6) Lift holes will not be permitted in precast manholes. D Mortar Mortar for use in masonry construction shall meet the requirements of MNDOT 2506.2B and ASTM C270. E Concrete Concrete used for cast -in -place masonry construction shall be produced and furnished in accordance with the provisions of MnDOT Specification 2461 for the mix design indicated in the Plans, Specifications, or Special Provisions. The requirements for Grade B concrete shall be met where a higher grade is not specified. Type 3, air -entrained, concrete shall be furnished and used in all structures having weather exposure. 2621.3 CONSTRUCTION REQUIREMENTS A Installation of Pipe and Fittings The Contractor shall take all necessary precautions to handle and install all pipe and appurtenances as recommended by the manufacturer, Engineer, Plans, Specifications, and the Special Provisions. Installation of PVC pipe and fittings for pressure sewer and forcemains shall meet the requirements of 2611.3 for watermain class pipe. Al Inspection and Handling Proper and adequate implements, tools, and facilities satisfactory to the Engineer shall be provided and used by the Contractor for the safe and convenient prosecution of the work. During the process of unloading, all pipe and accessories shall be inspected by the Contractor for damage. The Contractor shall notify the Engineer of all material found to have cracks, flaws or other defects. The Engineer shall inspect the damaged materials and have the right to reject any materials found to be unsatisfactory. The Contractor shall promptly remove all rejected material from the site. All materials shall be handled carefully, as will prevent damage to protective coatings, linings, and joint fillings; preclude contamination of interior areas; and avoid jolting contact, dropping, or dumping. All work and materials are subject to tests by the Owner at such frequency as may be determined by the Engineer. While suspended and before being lowered into laying position, each pipe section and appurtenant unit shall be inspected by the Contractor to detect damage or unsound conditions Page 46