Gas pipe ventilation

[vixerfixer]

Hi folks,just putting a false ceiling in the missus salon,but as you can see in the pic,there will be a 28mm gas pipe in the void which is going into the chippy in next shop.what vents will need to be fitted in the ceiling(size and how many).cheers

 

[Deleted member 267285]

No picture. Vent size depends on duct size.

 

[vixerfixer]

Void size is roughly 18” deep x 10ft wide and 14ft long

 

[vixerfixer]

Sorry forgot to add pic

 

[Deleted member 267285]

Try this

 

[vixerfixer]

Thanks mate,but have to be honest,I’m not the brightest when it comes to this crap,I’m lost‍

 

[vixerfixer]

I’m getting 0.15 with my calculations.would that be correct with the measurements.

 

[Deleted member 267285]

I work it out to be the 3rd one down, 0.05m2.

 

[vixerfixer]

Ok,cheers.so would I use one big vent or a few smaller ones.