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04-0525CAtechnical archives
TRIC Training Log: 05-25-04
Client: Midtown Rooter, Burbank, CA
Job: Residence, under front lawn to property line
Pull: 45’ / 4” / SDR17
04-0525CAtechnical archives
The site: A Hollywood bungalow, just blocks from the big studios.
04-0525CAtechnical archives
The path: roughly 40’ under the sloping front lawn. Though relatively short, a trench here would still produce a lot of dirt.
04-0525CAtechnical archives
The pulling hole: Breaking out the old pipe up to the property line connection.
04-0525CAtechnical archives
Clearing the way.
04-0525CAtechnical archives
Preparation: Remove all protruding pipe from the pulling wall, and make that wall as vertical as possible. Plug the downstream connection if necessary.
04-0525CAtechnical archives
Resistance plate: Sizing up the fit.
04-0525CAtechnical archives
First things first: The heating element takes about 30 minutes to warm up. New owners, be sure to remove the plastic packaging!
04-0525CAtechnical archives
Temperature: The factory setting is usually 450º (between 450º and 500º is optimal).
04-0525CAtechnical archives
Tricks of the trade: Get an old tire to store each cable.
04-0525CAtechnical archives
Shiny and new: 4” bursting head with band cutting blade, and clevis head with PE end cap.
04-0525CAtechnical archives
Fusing area: Find some place as open and level as possible. Here the carport would be useful in bad weather; in good weather it provides shade.
04-0525CAtechnical archives
Connecting the clevis head: A short piece of pipe is cut to fuse to the PE end cap.
04-0525CAtechnical archives
First weld: The end cap is fused to the short piece, allowing access to the cap bolt.
04-0525CAtechnical archives
Clevis head: Use a socket wrench or large basin wrench to tighten the cap bolt.
04-0525CAtechnical archives
Tightening up.
04-0525CAtechnical archives
Facing: Shown here is the shaver and 4” fusing unit.
04-0525CAtechnical archives
Cooling: Generally, about 10 minutes per joint, or until just slightly warm to the touch.
04-0525CAtechnical archives
Heating: Watching the melt. After contact, pressure is neutral.
04-0525CAtechnical archives
Getting in position: Moving the fused pipe up to the entry point.
04-0525CAtechnical archives
Band cutting blade: The “dorsal fin” is used to split bands and couplings underground. This sewer is 4” bell-and-spigot VCP; therefore the blade is not needed.
04-0525CAtechnical archives
Blade screw: When not using the blade, replace the allen screw to keep threads clean.
04-0525CAtechnical archives
Attaching the clevis: Arrange the clevis and head so that they “hinge” or bend along with the pull upon entry.
04-0525CAtechnical archives
Monitor the entry: A good start is important.
04-0525CAtechnical archives
An unrestricted approach.
04-0525CAtechnical archives
Keep resistance wall vertical: Here the resistance plate is inset (roughly 8”) due to burrowing at base of resistance wall. Uneven digging brings the pulley and ram closer to the dirt, restricting access to ram and inviting dirt in jaws. Cribbing can be used to alleviate this.
04-0525CAtechnical archives
Underway: Collecting cable and watching the pressure gauge.
04-0525CAtechnical archives
The pull: Keep track of the pipe in the ground, and be ready for the clevis to appear.
04-0525CAtechnical archives
Keeping tidy: The cable can be reeled into a tire during the pull.
04-0525CAtechnical archives
Arrival: The clevis sheath is almost at the threshold of the pulley housing.
04-0525CAtechnical archives
Watching the cable: When the clevis sheath (cable terminator) reaches the threshold of the pulley assembly, it’s time to stop. The clevis should never be wrapped under the pulley.
04-0525CAtechnical archives
Disconnecting the bursting head.
04-0525CAtechnical archives
Bumping down the hill.
04-0525CAtechnical archives
Connecting the top end.
04-0525CAtechnical archives
Mission accomplished: Ready to backfill.
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