New Supply To Garage

[Mowgli82]

Been asked to plumb in a washer into an external garage (not connected to house) - the location of the external building is about 6 ft away from the house so obviously considering burying the supply (to min 750mm) - but the garage has been built onto an existing concrete base and no idea what the depth is so wondering what best way is to not only provide the feed but to also take away waste water?
Is it feasible to come out from main supply, thorugh external wall, down into the ground to required depth, acrosss to garage, up on the outside wall of garage, through garage wall and into WM? bearing in mind obviously need for insulation etc. I cant find anything in WRAS to specify I cannot do this, or do I have to break the concrete floor and come up directly inside at a min of 750mm?
Also - nearest drain is about 8-10ft from where WM likely to be situated - am I best looking to tie into drain under ground level to ensure enough drop for the waste pipe run?
Must be honest - started to get sidetracked into a minefield of trace heating etc. and looked at the groundbreaker as a solution but just at a bit of a loss to find what is most cost effective and simple solution to the problem!
Thanks

 

[SimonG]

The washing machine will freeze and burst, unless your heating the garage. Had two last winter.

 

[Joncpi]

Water supply: Groundbreaker also do an insulated duct exactly for this sort of problem. It is a brown coloured square-ish plastic cover over a dense polystyrene insulation. www.groundbreaker.co.uk or 01449 673451 and talk to Steve Liegh about what you are trying to achieve he is always very helpful and will then advise you on your best course of action.
Waste water: You obviously need the correct fall. What about how the pipe looks on the wall? Is it acceptable to have a long 1 1/2" waste pipe along the wall? But putting a new 100mm drain pipe in the ground and cutting into the existing sewer can be a bit pricey. Does the existing drain run nearer to the garage? If so and it is not too deep you could consider installing a small manhole into the run just outside the W/M point. Or even just Y-ing in with a trap against the garage wall if only a very short run.

 

[dontknowitall]

A call to a local building inspector might put you in the clear if some busybody wanders along to the business and starts probing. The advice will also let you off the hook if the customer deems your proposals as silly and too expensive.