11 02/18 Use a carpenter handsaw or PVC saw to cut the PVC or HDPE casing. Be careful not to damage the FRP carrier pipe during this cutting operation. Remove the casing and cut off the insulation. See illustration below. Mark and cut the FRP pipe at the desired length using a fine-toothed hacksaw. Make sure cut is square. If a FRP fitting is to be installed at this point, taper the cut ends using the tapering tool. Using a utility knife, remove the insulation between the casing and the carrier pipe one inch in from the face of the casing as shown below. Insert the rubber end seal between the casing and the carrier pipe using the handle of a hammer or screwdriver to push the seal all the way. Silicone caulking may be used in lieu of the rubber end seal. THRUST BLOCKS: Thrust blocks must be installed wherever the pipe line changes direction or size as at tees, elbows and reducers or at any point that develops thrust such as at a valve or similar equipment. The above situations may occur either where the fittings etc., are directly buried in the soil, or are located in a manhole. Thrust blocks must be designed for maximum anticipated operating or test pressure. If it is anticipated that pressures higher than normal operating pressures will be used at a later date. Thrust blocks to accommodate such pressures should be installed initially. Size and type of thrust blocks depend on pressure, pipe size, and the type of soil. This information shall be supplied by the Design Engineer. Where a thrust block serves more than one line, the block must be designed to resist the sum of the thrusts of all of the lines involved. Thrust