directional drilling | Information by Electrical Professionals for ...
2015年2月24日 · There are HDPE assemblies out there with conductors already installed in them - this can be labor saving, especially for directional boring applications, but they work great for instances where you are plowing the line in instead of trenching as well.
Directional Boring cost and method | Information by Electrical ...
2015年6月13日 · Some 20 years I was working for a company that hired a directional borer to drill under an employee parking lot. The boring company "found" one of the sprinkler system supply lines. Having a Certificate of Insurance from you sub is always a good thing.
Directional Boring Warning Ribbon | Information by Electrical ...
2021年2月15日 · We are pricing to move an overhead service to underground, I inform AHJ, local inspector for the area that we are considering directional boring due to the circumstances. He asks how we plan on putting the metallic direct burial tape or some type of warning tape 12" above the bore for future indication.
Boring Under 6' Sidewalk With Pressure Washer.
2014年3月23日 · Welcome Spring To All. Hello, I have to bore a hole under a 6' sidewalk. I am thinking about using a pressure washer to accomplish this task. Has anyone ever tried this before and if so did it work? I usually use a long drill bit for my smaller sidewalks (30"). Thanks,
Directional Boring for electrical conduits. | Information by Electrical ...
2015年10月15日 · I have a project that will use directional boring to install some conduits on the secondary side of a utility transformer. Basically the electrical conduits routed from the utility transformer, under a concrete courtyard, to the building main electrical room. I am not too familiar with this directional boring technique.
Estimate cost of trenching through Asphalt surface
2021年4月25日 · I've pulled 200 ft of 2" sch 40 pvc conduit in a 4 1/2" directional bore. Just need room to glue to together ahead of time. A friend of mine has the contract with the local power utility for their directional bores. Usually road crossings. I've seen him pull back one 6" and two 4" hdpe conduits at the same time.
building feeding another building | Information by Electrical ...
2020年10月1日 · the load is about 700 amps. the client wanted to go with building feeding building. using the utility company was talked about, but in the end it was decided for bldg to feed bldg. don't know the details though.
SAW CUT/ CHOPPING... - Mike Holt's Forum
2012年8月22日 · In some places core drilling is a jurisdictional part of the electrician's work. With the proper tools and skill an electrician can core drill just as fast as the sub contractor and as you said he's already there so he can core drill when needed.
How much does it cost to install Duct Bank, including material?
2020年12月4日 · I see you are estimator 101.....estimating 101 says you take off 245' of 9-5"/2-3", spacers, concrete, rebar, pull tape, etc.....apply your labor, expenses, taxes, overhead/profit.
Cable Pull Tension Calculation | Information by Electrical ...
2014年1月13日 · My company is bidding on a design/build project that will involve a very long directional bore under an airport ?apron? (i.e., a parking area for aircraft). I am concerned about our ability to pull a conductor (750 MCM, 15kV) through an underground conduit (6?) that is as long (1000 feet) as the apron is wide.