"ac1951" wrote in message
...
Is it legal to run cables through notched out joists ?
I know the preferred option is to drill holes through the joists but
in this particular case the joist have already been notched out to a
depth of 40mm. So when you add an additional 15mm for the floor board
the depth from the surface will be 55mm.

The joist are 7" deep and the notching out has been made to accomodate
a 1" gas pipe but there is plenty of room alongside for the cables.

Andy

Gas installation pipework should be at least 25mm away from electricity
supply and distribution cables.

Hope this is not new work.
Notches in joists should be not more than 1/8 the depth of the joist for gas
pipes so a 28mm gas pipe should not even be in a 175mm joist.