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Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6300

2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey

Help! anyone out there know anything about digging holes

well trenches actually - for cable ducts
I need to get an idea of costs / metre for digging trenches (c200 mtrs) then making good.
works to be undertaken in an industrial estate on hard standing (concrete not tarmac) so will need to be cut, broken up, dug then back filled and made good.

I've been told £50 by civil engineering company and £250-300 by a quantity surveyor?

thanks.

24th Feb 2010 10:13pm

jools

Member Since: 23 Feb 2010
Location: Devon
Posts: 47

2003 Defender 90 Td5 XS CSW Zambezi Silver

What are you laying - how far apart are the buildings your trying to connect?

Is a wireless link an option? 2003 90 XS SW

Support Devon & Cornwall 4x4 Response - www.buy.at/dc4x4

24th Feb 2010 11:53pm

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6300

sorry not enough detail, we're looking to lay mains cabling.
wireless isn't an option.
need circa 200mtr of 700mm deep and 500mm wide trenching.

25th Feb 2010 7:01am

black betty

Member Since: 30 Jun 2009
Location: Ireland
Posts: 2

Not sure of the way thing are in the UK, but £50/m seems a tad optomistic to cut / dig / fill a trench in hard standing yard,

- yard will need to be road sawed
- most likely one machine will be employed to break concrete
- second machine to dig trench/ refill trench
- truck to shift away concrete debris
- sand / fine agregrate to be laid in trench for ducting
- ducting to be laid
- fish rope to be threaded through ducting
- trench to be refilled, and compacted
- concrete to be poured and screened off

Cant do the sums for you, as I haven't operated in the UK mainland, but
I'd be pricing this job for a crew of 3 men over 3-4 days, depending on ground conditions,
with 2x 12ton machines onsite
trucks on day 2 to shift away spoils
supply and fit of :
15 - 20 m3 of concrete
possibly steel for concrete
2-3 loads of sand / fine agregate
and possibly another 3-4 20 ton loads of 3" down fill, depending on what was taken away
6mm nylon rope 250m , as fish wire in ductpossible manhole at either ends, with covers
oh .... and the all important 4 rolls of electric ducting warning tape

so 200m x £50 would be tight IMHO

so if the civil engineering a willing to take the contract @ £50 / m to complete the above list and possibly a few items I've overlooked.........take their arm off

27th Feb 2010 9:41am

mhill

Member Since: 24 Jan 2010
Location: Tendring, Essex
Posts: 46

2010 Defender 110 Puma 2.4 XS DCPU Bonatti Grey

black betty wrote:

with 2x 12ton machines onsite

12 ton?!

No way, thats serious over kill, can easily be done with a 1 ton 360 with a trenching bucket and why the need for two machines?

Last edited by mhill on 27th Feb 2010 9:03pm. Edited 1 time in total

27th Feb 2010 7:33pm

DAZ110

Member Since: 06 Dec 2007
Location: East Sussex
Posts: 2040

2013 Defender 90 Puma 2.2 XS CSW Barolo Black

......or get your shovel and pick out......

27th Feb 2010 7:50pm

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