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materials shall be installed. <br />defective materials <br />b. Clean all materials <br />3.2 INSTALLATION <br />A. Pipe Laying <br />It is the contractor's responsibility to replace <br />1. Carefully place all pipe, pipe fittings, valves etc. into trench by means of suitable tools <br />or equipment in such a manner as to protect the materials of construction <br />2. Install pipe with bells pointing the direction the Work is progressing unless otherwise <br />indicated per engineer <br />3. Where pipe is being laid on a positive grade, the installation shall proceed uphill with <br />bell ends pointing up grade <br />4. Install the pipeline so that a positive or negative grade is maintained between high and <br />low points <br />5. Per construction plans verify the intermediate high point, contractor may maintain <br />grade to avoid installing air relief if grade allows. If grade is not maintained the <br />contractor shall install air relief at high point. Discuss with owner prior to proceeding <br />6. Complete the joint in accordance with the applicable pipe material specified and <br />adjust the pipe to the correct line and grade as each length of pipe is placed in the <br />trench <br />7. Secure the pipe in place with the specified bedding tamped under and around the pipe <br />a. Do not disturb the pipe after the jointing has been completed <br />8. Pipe shall be installed per the construction specifications or per manufacturer's <br />recommendations whichever is more stringent <br />9. Do not lay pipe <br />a. In water <br />b. Under unsuitable weather conditions <br />c. Under unsuitable trench conditions <br />10. Provide a minimum depth of cover from finish grade to top of pipe of 4 feet <br />B. Pipe Cutting <br />1. Cut the pipe square with saws or pipe cutting tools designed specifically for the <br />material <br />2. Bevel the end in accordance with manufacturer's recommendations <br />3. Insure that the pipe being cut will be able to be installed to the required depth of the <br />joint for correct installation <br />4. Remove burs and clean pipe of all dust and dirt witli jointing surfaces <br />C. Anchorage and Blocking <br />1. Provide concrete thrust blocks, anchors, joint restraints or other approved means of <br />restraining pipe and fittings in order to prevent separation <br />2. Thrust blocks <br />a. Bearing surface area shall be sized to accommodate the designed pressures of the <br />pipe system <br />b. Shall be Iocated between the fitting or pipe unit to undisturbed solid earth <br />c. Install concrete in a manner that allows for access to fittings <br />3. Concrete thrust blocks and /or anchors shall be of Portland cement, fine aggregate and <br />33 1100-7 <br />