Award Bid - 2024 Sewer and Manhole Rehabilitation Proj No. 122-019 - Visu-Sewer, LLC

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backing out the cut used for the injection. Use the following recommended procedure for injecting resin into the tube at an intermediate point along the liner: • On either side of the seam, near the center of the tube, make a slit into the tube just large enough for the transfer pipe or hose. The slit should be along the length of the tube. • Verify that the slit has been made through the appropriate number of layers of felt to expose the center of the tube. Insert the transfer pipe or hose into the center of the tube. • Use a board or pipe pried under the tube to elevate the liner slightly (if possible) for improved resin transfer and pump the required resin into the tube. • Close the slit by using a large sewing needle and 0.125 in. braided twine to sew the opening closed in a pattern similar to that of a laced shoe. Tightly tie off the twine and place two, the second larger than the first, PU patches over the slit and seal with THF. If the resin is allowed to be completely consumed and the injection is made below the resin face in dry felt, the procedures for initial filling will be required because the vacuum will have been lost in the tube. PINCH ROLLER GAP SETTING As the resin slug moves down to the end of the wet out conveyer, the tube is ready to move through the gapping rollers and onto the transporting vehicle. The roller gap setting should be set according to the liner manufacturer’s recommendations. Although, field conditions must also be considered to determine the gap setting that will produce the desired end result. This roller gap setting has been chosen to allow for full wet out of the felt layers of the tube as it is wet out. The most reliable method of setting the gap distance is to produce a set of shims of the appropriate thickness and put them between the rollers to gauge the distance. When the shim fits snugly between the rollers the setting is correct and the wet out is ready to proceed. Check to insure that the rollers are centered and not out of round. It is recommended to check the gap setting every 100 feet as the liner is being wet out.