Pulling HDPE pipe

[plasticlay]

How is HDPE pipe "pulled" through a sleeve?

The HDPE pipe is proposed for water distribution. The sleeve is a dual wall corrugated bell and spigot HDPE pipe, and will be installed years before the water distribution pipe will be installed.

 

[MikeHalloran]

Why wait?

If you do wait, how do you get the roots out of the sleeve before pulling the waterpipe?



Mike Halloran
Pembroke Pines, FL, USA

 

[BigInch]

Install pull cable and pull boxes for pulling it in at a later date.

BigInch-born in the trenches.

http://virtualpipeline.spaces.msn.com

 

[plasticlay]

I am unfamiliar with this process, and need more information. Is there a website that shows what pull cable and pull boxes are? Would it help to place a rope inside the sleeve? Is this sufficient?

Believe me, if we did not have to pull pipe through a sleeve we would not do it (i.e. not wait simply install the HDPE pipe).

 

[CivEnvEng98]

I am curious about a few things:

1) What are the diamters of both pipes?

2) How long of a pull would this be?

3) Why are you waiting to put in the carrier pipe? How long of a wait? How are you planning to cap the ends of the casing/sleeve?

Thanks!

 

[plasticlay]

The sleeve has an inside diameter of 24". The pipes being pulled through vary between a nominal diameter of 12" and a nominal diameter of 3". The pull is approximately 200 feet. We are having to wait a couple of years due to logistics constraints. The ends of the sleeves will be capped using the manufacturer's recommendation.

Thanks for your help.

 

[BigInch]

For 200 feet of HDPE pipe, it doesn't need to be too elaborate, since the HDPE is relatively light.

Pull cable is just a nylon rope, steel cable, plastic coated or galvanized if you like. Just something strong enough to pull the HDPE pipe along through the carrier or conduit pipe from inlet to outlet when you're ready to install the HDPE.

Install the conduit now, leaving the cable inside laid in from inlet to outlet. The pull boxes at the inlet and outlet of the conduit pipe are just acess points for later. If you don't mind digging up the carrier pipe ends later, cutting off the caps, reaching in and finding the pull cable, you wouldn't need to install the pull boxes at all. Its just a access box or manhole down to the conduit pipe that's big enough to allow you to manouver the HDPE down into the conduit, so you can push it in and pull it along with the cable.

When you want to install the HDPE pipe, just attach the pull cable to the HDPE pipe while feeding it into the inlet to the carrier, and pull on the cable at the outlet end and the HDPE will come along to you.

BigInch-born in the trenches.

http://virtualpipeline.spaces.msn.com

 

[CivEnvEng98]

For 12" dia HDPE, 200 LF? Bah, I thought you were talking about a BIG pull.

Yeah Big Inch is right on. The pulling stresses are nothing major. At US Rope, Cable and Chain, their 3/8" nylon, double braided pull line can handle up to 5,000 lbs, which is MORE than enough for this project.

 

[BigInch]

Don't even have to lift the pipe. Only pull over the friction force. ....Don't leave any sharp edges in the conduit to gouge the HDPE during the pull.

BigInch-born in the trenches.

http://virtualpipeline.spaces.msn.com

 

[plasticlay]

Thank you for your help.