Hello I am currently digging a trench so I have can have my old lead water main replaced. My house has suspended wooden floors with concrete beneath. My question is, what is the best way to bore down through this concrete the required 750 mm in order to insert the required 110 mm pipe? Many thanks
you'll not be able to just bore a hole and thread it up, you'll have to jack hammer through the concrete and make a ditch to lay the pipe in and using a ducting to protect the pipe use a slow bent to come vertical into the house, you also need to insualte the pipe as it rises,
I presume the concrete is only 6 inches deep or so? Would an SDS drill do it? After that I would need some way to excavate underneath that...
Don't you believe it, I had to break up 12" of solid concrete for 15' under a supended floor many moons ago, while installing new drainage.
Who said it a required 750mm ??. Just dig your trench up to the house and then bring the pipe up and in through the brickwork above the concrete, insurlating it against frost if so required.
Regulations seem to stipulate 750mm. As detailed on this page: http://www.diydoctor.org.uk/projects/leadpipe.htm
Dependant on the water company I think, Bristol Water & Wessex Water connection requirements are virtually the same, I quote the following. All pipes must be laid in trenches that are between 750mm and 1200mm deep. Supply pipes must then enter the property and remain at that depth for a minimum horizontal distance of 750mm from the external face of the wall before rising to an internal stop tap. Pipes must remain at a depth of between 750mm and 850mm for one metre either side of the boundary box. Some water companies goes deeper, & require a minimum of 350 mm away from any gas supply.
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