how many toilets can enter 110mm soil

[sheff paul]

looking at some light commercial,how many toilets can flow into 1 110mm soil pipe ,done a search cant find anything definite.. Any advice would be good

 

[kris]

Is there something in the regs ,,

http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADH_2002.pdf

 

[joni os]

Most 100mm foul drains suffer from lack of use rather than over use. The pipe diameter will accommodate flows of 6 litres/sec. This being the amount of water used by modern cistern, theoretically 60 toilets flushing per minute would be ok.
However, if connecting to horizontal pipe above floor level, spacing of toilets and fall on pipe will determine critical number.

 

[Unregistered]

Thanks mate for that cannot download as fault on pc.looking at around 30 on a horizontal basis

 

[sheff paul]

Thanks mate for that cannot download as fault on pc.looking at around 30 on a horizontal basis

This will be on 2 separate pipes connecting onto 1 outside in a vertical connection

 

[joni os]

Toilets at 1 metre spacing, length of run, 8 toilets, 7.5 metres, fall 150mm ( 1:50 )
Requires two vertical stacks with horizontal connections from both sides, or one stack if toilets arranged over two floors, 32 total.

 

[Toggles]

What kind of light commercial is it ?
I ask as 'if' it is likely that all these toilets could be flushed at the same time (Say during a gig or game interval) Then you need to be aware of the risk that the 110 pipe wont cope with all that water, even if sub vented, could also cause loss of trap or induced siphonage/ back pressure/ cross flow, general lack of performance and clearing........

You will find info in the Building Regs Part H1

 

[sheff paul]

Nite club mate, encountered the problem with a bingo hall job years ago with all wc, s being used at same time

 

[Toggles]

Nite club mate, encountered the problem with a bingo hall job years ago with all wc, s being used at same time

You know the score then 😉

Good practice state you take into account and accommodate for the issues and needs of the premises, think of all that loo roll and goodness knows what else going down them nightclub toilets, need to get it right or you'll be getting called back to clear the stinking things ;(

How many pans/ urinals/ basins are they looking at ? Whats the spec?

 

[sheff paul]

Looking again 20 wc, s , 12 basins , 1 urinal, gonna terminate 1pipe out side if building control pull it, fit an extra drain connection, doing it on a day rate, but advising on an extra drain connection though

 

[joni os]

H1 table 2 confirms max 8 wc per branch.

 

[sheff paul]

10 ON ONE branch , drawings are pants

 

[sheff paul]

Cheers for reply lads,always handy having some good lads on here

 

[Toggles]

Cheers for reply lads,always handy having some good lads on here

And ladies Paul :bow: LOl

 

[Destroyer2813]

1 urinal is this a female only nightclub?