gas pipe in stub wall battened off

[footprints]

Under floor is considered a ventilated space by the industry.

 

[Riley26]

• Would the timber battens be airtight enough to contain any gas escapes?

 

[Dan Robinson]

(6) Where any installation pipework is not itself contained in a ventilated duct, no person shall install any installation pipework in any shaft, duct or void which is not adequately ventilated.

Perhaps you should avail yourself of BS6891.

Common sense would be to RTFM instead of posting twaddle.

 

[Riley26]

Any thoughts on the above Dan ?

 

[Dan Robinson]

I have many thoughts. Some of my finest, as with many, are to be conjured whilst sat on the porcelain throne.

But to which particular thought are you referring?

 

[Dan Robinson]

• Would the timber battens be airtight enough to contain any gas escapes?

It is not about containment. Think about your LEL & UEL

 

[Riley26]

LEL and UEl??

 

[Dan Robinson]

Lower explosive limit

Upper explosive limit

 

[Dan Robinson]

If you have a room FULL of gas, and chucked a lit match in, what would happen?

 

[Riley26]

It needs the right % of air to ignite?

 

[bernardgreen]

If you have a room FULL of gas, and chucked a lit match in, what would happen?

The match goes out. Provided no air ( or oxygen ) enters the room along with the match.

 

[Dan Robinson]

And half full?

 

[Dan Robinson]

Bernard, your homework is ventilation requirements. Riley's is UEL/LEL. We'll move him onto ventilation later.

 

[Riley26]

But the wood batens possibily wouldn't.be.air.tight so a gas escpace may not be contained, so you could end.up with the right mixture of air and gas?

 

[Riley26]

Gas could pass through were the pipe drops down the top of the stud.wall through a notch. In to the space between to above tongue and groove floor. Is this ok as.they no say you dont need a vent if a pipe runs below a tongue and groove floor.