Existing driveway - Help wanted

All forms of block paving, brick paving, flexible or rigid, concrete or clays, new construction or renovation
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Woppy69
Posts: 2
Joined: Tue Aug 19, 2014 7:51 pm
Location: Uk

Post: # 100569Post Woppy69

Hi all, I have broken up a old concrete drive and removed the concrete. What depth should I excavate to underneath?The ground is hard and has rubble underneath and road plannings. Seems very solid.

Best wishes

David
Djwaspe

seanandruby
Site Admin
Posts: 4713
Joined: Mon Jun 26, 2006 11:01 am
Location: eastbourne

Post: # 100572Post seanandruby

Are the planings coated in bitumen, or clean, are they a uniform size say 40ml? Could be you might get away with leaving them in if they are clean.
sean

Woppy69
Posts: 2
Joined: Tue Aug 19, 2014 7:51 pm
Location: Uk

Post: # 100574Post Woppy69

Clean road plannings all about the same size, not very deep though but firm. Could u run the wacker plate over it to help?
Djwaspe

seanandruby
Site Admin
Posts: 4713
Joined: Mon Jun 26, 2006 11:01 am
Location: eastbourne

Post: # 100582Post seanandruby

If it's been down a while with a concrete slab on top it should bé as compact as it will ever bé. But if you have a wacker it won't hurt to give it a thumping. Clean planings is good to go then.
As long as you have 100 to 150 sub base down, DTP1 or as good as.
sean

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