Gas Vents

[bobby62]

I am involved on a project at the moment, an upgrade to a village building.

In another hall I noticed some white flush louvered grilles fixed to what looked like service boxing in the corner of the kitchen area. Are these required for the gas pipes in the boxing?

Please note, I am only involved on the funding... I'm not the plumber!

 

[kirkgas]

if pipe boxing is over a certain volume it is a duct and requires ventilation to allow a gas leak to be noticed before it builds up to a dangerous level, will check and post exact volume requirements later, unless someone beats me to it!!

 

[bobby62]

Thanks very much, the volume info would be useful.

 

[grahamderek]

Depends on volume and cross sectional area.
Ducts less than 0.01sq.m. AND less than 0.1cu.m. do not require ventilation. Above that requires varying amounts of ventillation.
Post details and one of us will look it up

 

[bobby62]

Depends on volume and cross sectional area.
Ducts less than 0.01sq.m. AND less than 0.1cu.m. do not require ventilation. Above that requires varying amounts of ventillation.
Post details and one of us will look it up

Thanks, the duct containing the gas pipe will be 250mm x 650mm x 2400mm., this rises from ground floor to the floor void above, hence the 2400mm height.

 

[grahamderek]

Needs vents at high and low level, 50000sq.mm each (about 12" square)

 

[bobby62]

Needs vents at high and low level, 50000sq.mm each (about 12" square)

Thanks for the info. Just out of interest, where do you guys get this information from? I guess you can reel these figures off in your heads!!