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Opening of Bids - 2024 Sewer and Manhole Rehabilitation Proj No. 122-019 - Visu-Sewer
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Opening of Bids - 2024 Sewer and Manhole Rehabilitation Proj No. 122-019 - Visu-Sewer
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7/9/2024 2:49:57 PM
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7/9/2024 2:48:50 PM
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Board of Public Works
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Projects
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7/9/2024
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NATIONAL LINER RECOMMENDED <br />SITE SURVEY PROCEDURES <br /> <br />The purpose of a site survey is to identify potential problems, verify measurements, and <br />provide detailed information concerning a line segment or job-site associated with the <br />installation of a CIPP liner. <br /> <br />The person or persons who will complete the site survey should have the following equipment: <br />• Measuring wheel <br />• 300 ft. Tape measure <br />• 30 ft. Tape measure <br />• Manhole Hook <br />• Set of Calipers for pipe I.D. measurement <br />• Air Blower <br />• Gas Detector <br />• Tripod <br />• Safety Harness <br />• Safety Lanyard <br /> <br />Upon arrival at the job-site, the supervisor and crew should assess the need for traffic control <br />during the site survey. If there is a need for traffic control, the supervisor will postpone the site <br />survey until a traffic control plan is submitted and approved. <br /> <br />Once traffic control is approved and set in place, the crew will proceed with the completion of the <br />site survey. Note: Measurements taken inside manhole should be taken at upstream and <br />downstream manholes. The completion of the site survey includes the following information: <br /> <br />• Assess further traffic control needs (if necessary). <br />• Measure line segment length and verify diameter of pipe at both ends. (See Line <br />Measurement Procedure - CCTV Inspection section). <br />• Test manhole for hazardous atmosphere. If the manhole is free of hazards, fill <br />out "Confined Space Entry" form and enter manhole. <br />• Verify diameter of pipe (Inlet and Outlet). <br />• Assess bypass needs. <br />• Assess fire hydrant locations. <br />• Determine if there are overhead obstructions (upstream and downsteam). <br />• Determine equipment placement during installation. <br />
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