Fitting Gas pipes under the floor

Who is going to know unless you take out an advert in the local paper. Just make sure it's secure and not moving about, and it's protected. Common sense comes in to it.

Call me old-fashioned, but I much prefer black iron barrel for gas, particularly under floors. Won't get confused with any other services, and will repell the stray nail pointed in it's direction in the future.

AWEM

That's what British Gas did in my house some years ago, and all the houses down the road, when they moved all the gas meters outside whilst also replacing the gas main down the road. They installed 22mm which wasn't enough, and I upgraded it to

don't quite undertand, what are sleeper walls and if it can go between the joists just fix it to the joist with clips

and if it crosses the joists you can get clips that fit under the joists thats supposint the joists are wood!

On Sun, 4 Jun 2006 22:10:03 +0100, Gav wrote (in article ):

Walls that go across a room part way across under the floor and provide extra support for the joists.

Quite often, they have a part open structure to allow ventilation and a pipe could be run through one of the gaps.

The message from Andy Hall contains these words:

A friend had a house in Harrow with a suspiciously bouncy livingroom floor. I had to go under it one day to replace a CH pump. Instead of sleeper walls it just had rough piles of bricks vaguely mortared together.

Many years earlier a new iron gas pipe had been run in, someone had knocked over the pier in the middle of the floor 'cos it was in the way of an easy pipe run.

Talking to other people in the road those that had been under the livingroom floor had mostly found the same thing.

Sleeper walls are what the joists are sat on in the middle of the room

The pipe must be adequately supported. Under a floor I'd make sure it's not actually waving about. I'd also sleeve it (e.g. bit of gash 32mm plastic waste pipe) where it would lie on masonry, to protect it from corrosion.

The main difficulties are getting the 28mm pipe under the floor without getting dirt into the ends of the pipe. This means that you have to use smallish sections and more joins. if you can get the pipe in through an air brick from outside then you will have an easier time.

Clip the pipe, keep it away from masonry.

Read BS 6891 (see below).