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PostPosted: Mon Sep 28, 2009 9:55 am 
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Joined: Thu Aug 06, 2009 11:17 am
Posts: 16
We are thinking of getting a quantity surveyor in to find out how much our slab would cost including excavation as our concreter is overcharging to the max.

His total price is over 62 thousand and we only went with him cause he was supposed to be significantly south of 40 thou, not incl bulk excavation and rock.

there was rock and some excavation but not enough to warrant that price and the quantities are all out, extra steel and concrete etc...

has anyone ever used a quantity surveyor, and have any idea on the cost of one?

Thanks
dave

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PostPosted: Mon Sep 28, 2009 11:01 am 
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Joined: Mon May 07, 2007 11:22 am
Posts: 36
Location: Eltham Sth
Davey

If I were you I'd get more quotes as they cost nothing but if the jobs already done did you agreed on a price before starting?

As a guide:
Excavation should be around $20m3 (+GST). This includes excavation and removal from site and would also include some allowance for rock breaking.
Concrete slab should be around $120/m2 assuming its a pretty standard class of slab and footing design but if its suspended, cantilevered or in a poor site classification this can increase dramatically.

Regards

Andrew


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PostPosted: Mon Sep 28, 2009 7:27 pm 
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Joined: Thu Aug 06, 2009 11:17 am
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theo wrote:
Davey

If I were you I'd get more quotes as they cost nothing but if the jobs already done did you agreed on a price before starting?

As a guide:
Excavation should be around $20m3 (+GST). This includes excavation and removal from site and would also include some allowance for rock breaking.
Concrete slab should be around $120/m2 assuming its a pretty standard class of slab and footing design but if its suspended, cantilevered or in a poor site classification this can increase dramatically.

Regards

Andrew


It's an S class raft slab with no slope, no water table, just a retaining wall with a 500 deep * 300 w footing and house footings are 400d * 300w.

Slab size is 341 sp incl patio and entertainment shelter and there are 149.9 l/m of 400*300 footings + 24 l/m of 500*300 footings.

The price was supposed to be under 41,000 for all footings house, retaining wall footings and entertainment shelter footings, standard excavation (excl large area excavation), concrete, steel, other materials (chairs, polythene, tie wire) labour, slab prep and machinery hire (so pretty much everything) as we had two other quotes and they said they could beat them. The excavation of the retaining wall area was ( 27m *1.5m *3m)/2 = 60 cubes of soil.

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