Gas Pipe Duct/boxing

[thecalvers]

I would like to create boxing around gas and water pipes for the installation of a shower. The shower is part of an extension that has a steel gas pipe rising into the new bathroom that was once external. Can I duct around the pipe to take it to the wall... could the term duct include boxing around that pipe and other water pipes as long as it is vented where I can run it externally, then back through a wall to the meter in a adjoining garage.

Can I have this duct/boxing directly under a shower creating a type of shelf in the shower?

 

[AWheating]

yes you can box a gas pipe in, if the boxing is over 0.01m2 then you will need to vent it with the correct size ventilation. If you want the pipework altered then get a local gas safe engineer to give you a quote for the work.

 

[thecalvers]

Would I have to buy ready made vents or could I just drill venting in? If the boxing is 0.6x0.1x1m then what size vent would I need??? Thank you.

yes you can box a gas pipe in, if the boxing is over 0.01m2 then you will need to vent it with the correct size ventilation. If you want the pipework altered then get a local gas safe engineer to give you a quote for the work.

 

[Simon F]

vents need minimum and maximum sized holes, and you need to be able to see that the venting has the correct free flow of air.
the best way to do that is to by purpose made vents that clearly state the vent area size in cm2.
as already said by AW your gas engineer that does the pipework will be best suited to advise on this.

 

[bennygas]

going by the sizes you've given, there's a caveat in BS6891:2005 (section 8.11.1) which could apply - if the volume of your boxing in is less than 0.1 m^3 then it is considered to be adeqautely ventilated via adventitious means and therefore no additional ventilation is required. The sizes you've given result in a volume of 0.06m^3, don't know if that helps.