Drainage ?'s

Joined
8 Sep 2008
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Location
Bedfordshire
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United Kingdom
Doing a Benchmark for our firm and just need to clarify following.

With an invert level of 1.5m does the foul drainage manhole need to be circular min 1050mm dia and with steps?

Does same apply with surface water manhole at 1.5m invert?

Thanks for ay info.
 
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Check Sewers for Adoption.. but off the top of my head i believe you can go brick, plastic ring or conc ring down to 1.5m below that its conc ring only..

Look up tables will give manhole sizes for various areas, pipe diameters and depths etc etc etc
 

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