Foundation trench dug, existing services found!

[Rusty123]

Firstly, hi to everyone here.

I'm building a single storey front extension, and i'm doing as much of the work myself as possible.

I have dug the trench for the foundations (clay) 600mm wide and 1 metre deep but have come across gas, water and electric services in the trench.

I'm obviously going to dicsuss my options with BCO when he comes to inspect the trench but i'd really appreciate your advice or opinions on what i can do with them?

Do i have to move them all?

Can i sleeve them with something so they are protected when i pour foundations?

Do i need to shutter them, and then fill around them after the main pour?

For info, they are about 500mm down in the trench.

Many thanks in advance

Russ

 

[holmslaw]

It is illegal to build on top of a gas main - so it must be moved. And you would be better off moving the other services at the same time.

 

[noseall]

the water and electric can pass through the building no prob's, but it is better to sleeve them where they pass through any foundation concrete.

make a note of the gas main position as this can be dug up later on and set into an external meter box which you will have to build into a suitable location.

this can happen with the electric if it is more convenient to do so but not a prerequisite as with the gas.

 

[Rusty123]

Thanks guys

Just to confirm then that i can sleeve the electric and water, and temporarily leave the gas until the foundations ae poured and brickwork has started, then i can dig down to the gas main and have it relocated onto an outside wall of the new extension with a new meter?

Final few questions if may be so cheeky!

What is the best thing to use to sleeve the electric and water? and any advice on the best method of doing so?

Thanks again

 

[noseall]

What is the best thing to use to sleeve the electric and water? and any advice on the best method of doing so?

Thanks again

we normally split some gutter downpipe and feed this over the pipe, plug the ends with insulation then tape it up.