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Posted: Wed Aug 09, 2017 7:10 pm
by loudog
Hi Chaps, I have been asked to lay ducting within the drive that I am excavating for tarmac. My question is this... he has asked for ducting for gas, electric, water, broadband and tv. Can I lay just one ducting with the string already in it for all these services or do they have to be separated? I really appreciate your feedback.
Kind regards
Lou
Posted: Wed Aug 09, 2017 8:33 pm
by jwill
No chance.
4" is easier if client willing to pay.
Go 900 deep water - their inspectors are nazis. Photo before backfill.
Leccy black duct. Min 450 deep
Gas perforated duct. Min 450 deep.
Can usually get free grey rigid duct from open reach for nowt. Depth not crucial
Posted: Wed Aug 09, 2017 8:34 pm
by jwill
Gas yellow.
Don't think water colour is crucial on own land. Probably neither is leccy. Might mean you just have to buy 1 yellow roll
Posted: Thu Aug 10, 2017 11:01 am
by Tony McC
Other than gas, colour isn't crucial, as jwill says, but it's bloody handy for anyone excavating in the future.
Full guide to Ducting Colour Codes - Jayz! That page mneds updating: it's not been refreshed since 2005!!!
Posted: Fri Aug 11, 2017 6:49 am
by loudog
When I have dug before gas and water are never in dicting is this ok ? Please
Posted: Fri Aug 11, 2017 6:57 am
by loudog
Ducting not dickting. Also whilst I am here. Can all these be laid in the same trench or is the electric not allowed in the same trench as gas. I know different depts but what about widths. Sorry dafty here
Posted: Fri Aug 11, 2017 8:01 am
by seanandruby
Same trench, space what you can. Surround and cover with sand and place whatevet services tape on top ie caution electric below etc:
Posted: Fri Aug 11, 2017 2:18 pm
by loudog
Many thanks 
Posted: Sat Aug 12, 2017 9:27 am
by Tony McC
There's no necessity to put water and/or gas into ducting but if you;re waiting for someone else to install the actual pipe, then putting in a duct with a draw rope can allow you to backfill and crack on with the proper work while you wait for the slug-a-beds to rock up at some inconvenient time of their choosing to drop in the alkathene or service pipe.