Pipe through foundations

Foul and surface water, private drains and public sewers, land drains and soakaways, filter drains and any other ways of getting rid of water.
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grahbigg
Posts: 1
Joined: Wed Jan 11, 2006 10:25 am
Location: Hull

Post: # 15704Post grahbigg

I have recently had an extension built & now decided to install a downstairs wc. The floor is suspended timber over a concrete base, the foundations are foundation blocks. My question is what size hole do I need through the foundations in order to pass a 4" clay pipe to an access chamber & connection to the main drain?
Graham N Harrison
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lutonlagerlout
Site Admin
Posts: 15184
Joined: Fri Aug 04, 2006 12:20 am
Location: bedfordshire

Post: # 15707Post lutonlagerlout

150mm diameter approx.
hope this helps
LLL :)
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