Pumping stations - Rising main pipework

[celconman]

[url=http://]My Webpage[/url] My problem is as follows. I want to extend my bungalow to include another bathroom, however, the distance to the nearest inspection chamber is 30 metres which has an invert of 450mm. My building inspector tells me that some form of pumped system is required but even this option appears to be fraught with difficulties. All suppliers provide a rising main outlet of either 2" bsp or 50mm nom and advise connection to black MDPE 50 nb pipe. However, allowing for ground cover over the pipe, and the inherent nature of this stuff to stay coiled I cannot see how I can lay it sufficiently level over that distance and meet the building regs requirements ( it says something like 'without deviation or change in level'). Marley will not sanction 50mm solvent weld for underground soil applications and I don't want to go back to the building inspector with a half vast scheme and look a wally, so any ideas for either fettling this pipe or an alternative?

[Tony McC]

Which sytem(s) have you considered? Normally, for a rising main, the start and end of the pipe are set into anchor blocks of concrete and any changes in angle are held in place via a cast-in-situ concrete thrust block.

There are 50mm pipes that can be laid without any coiling, Polypipe and/or Hepworth being just a couple of the options. If there's only going to be 450mm or so of cover, I'd suggest laying the rising main on a bed of concrete and haunching it in place, rather than effing about with anchor/thrust blocks and the like.

[celconman]

Which sytem(s) have you considered? Normally, for a rising main, the start and end of the pipe are set into anchor blocks of concrete and any changes in angle are held in place via a cast-in-situ concrete thrust block.

There are 50mm pipes that can be laid without any coiling, Polypipe and/or Hepworth being just a couple of the options. If there's only going to be 450mm or so of cover, I'd suggest laying the rising main on a bed of concrete and haunching it in place, rather than effing about with anchor/thrust blocks and the like.

Thanks for the tip regarding the pipe, although I thought that polypipe was to thin a wall for a soil waste outlet, which is what I need it for.