Broken Duct Pull Cord

[andyh]

During the ground works for my new build, I laid two ducts from the house to the end of the driveway. I put pull cords through both but one of them has snapped in the middle! The duct is approximately 150m long and bends underground twice. It's 63mm in diameter and although it's flexible duct with ridges on the outside, the manufacturers put an internal covering on the internal surface to make pulling cable through easier.

Just wondering if anyone has any bright ideas of how to get a new cord down the duct without digging it up. It's under various bits of landscaping so digging it up isn't really an option. I was really careful with the pull cords so don't know why it snapped - I wasn't even trying to pull anything through just testing the pull cord was o.k.!!!

Any bright ideas most welcome!

 

[Spudnik]

As you may or may not know, the silly string that comes installed in the duct is only there for you to pull through a proper rope, which would then be used to pull your cables.

I agree with benji about the distance though.

At least one pit should be in there.

Mainly due to the fact that you will put a fair bit of strain on whatever cable you are installing when you pull it through.

 

[andyh]

As you may or may not know, the silly string that comes installed in the duct is only there for you to pull through a proper rope, which would then be used to pull your cables.

I agree with benji about the distance though.

At least one pit should be in there.

Mainly due to the fact that you will put a fair bit of strain on whatever cable you are installing when you pull it through.

Agree about the pit and will put one in about halfway which won't be too difficult as this is approximately where the car parking area begins and I know exactly where the ducts are.

I'm hoping to use one duct for CCTV cabling (CAT5 or Coax) and the other for electrics. Probably run a 10mm2 or 16mm2 SWA. There's no way I could pull a 16mm along that distance without a draw pit so will definitely put one in.

Thanks for all the advice guys.

 

[Had8Lives]

Send a rat down the duct with the rope tied round it.

 

[barney]

Borrow a ferret!!