Water pipe to shed/ utility room

nigwerwig

Hi all
I'm going to build a shed /utility room out my back garden need potable water . I have a Trench about 16" deep maybe more or less at some points ran up the garden to were the shed will be. There is a path at the back off the house that is cut away all so.

What water pipe would be suitable to run under ground. It would have to come up the wall at the house and come in at just over floor level if that makes sense.

I would like to redo the path as soon as I can.
I'm wondering if there is a Frost issue were the pipe goes into house as it will be above ground for afew inches. Is it ok to use fitting under ground as I'd need two 90°s (maybe?) To run up the wall and in to the house. I don't really want to the disturbed the damp course

And help appreciated
Thanks

Dtp1979

Try avoid fittings underground. Go down at least 700mm. Use heavy gauge hydrodare. It's old school but nothing is tougher or more durable

nigwerwig

Dtp1979 wrote: »

Try avoid fittings underground. Go down at least 700mm. Use heavy gauge hydrodare. It's old school but nothing is tougher or more durable

I can't go any deeper as the 4 "waste pipe is in the Trench and set with a dry mix . The path had an AJ so easy access to the waste . I could try bend the hyrodare so not to have a fitting underground just a 90 into the house.

my3cents

16 inches deep is deeper than most of the Irish Water feed pipes around here. One I found for a neighbor to sort out a leaking mains stop tap (no meter as IW can't find the pipe) is no more than 4 inches deep over a 30 yard run. I'd recommend much deeper but in the 40 years its been like that it hasn't frozen.

Also I wouldn't worry about having fittings underground again not ideal but sometimes you have to. There's noting to rot in a plastic Philmac or similar joint and if made correctly which is hard to get wrong its never going to cause you problems.

nigwerwig

my3cents wrote: »

16 inches deep is deeper than most of the Irish Water feed pipes around here. One I found for a neighbor to sort out a leaking mains stop tap (no meter as IW can't find the pipe) is no more than 4 inches deep over a 30 yard run. I'd recommend much deeper but in the 40 years its been like that it hasn't frozen.

Also I wouldn't worry about having fittings underground again not ideal but sometimes you have to. There's noting to rot in a plastic Philmac or similar joint and if made correctly which is hard to get wrong its never going to cause you problems.

Sounds like it will be fine

Would it best to run 3/4 as that's what's the main is coming into the house

my3cents

nigwerwig wrote: »

Sounds like it will be fine

Would it best to run 3/4 as that's what's the main is coming into the house

Around here its all done in half inch heavy gauge which seems to be the pipe that is used for almost everything buried outside. Internally the pipe is half inch inside but outside is more like 3/4 inch

Just beware the off the shelf philmac fittings need to have the (red) inserts changed to for half inch heavy gauge (white) inserts, any builders merchants will know what half inch heavy gauge is and give you the right fittings just ask.

nigwerwig

my3cents wrote: »

Around here its all done in half inch heavy gauge which seems to be the pipe that is used for almost everything buried outside. Internally the pipe is half inch inside but outside is more like 3/4 inch

Just beware the off the shelf philmac fittings need to have the (red) inserts changed to for half inch heavy gauge (white) inserts, any builders merchants will know what half inch heavy gauge is and give you the right fittings just ask.

I got some 1/2 heavy gauge this morning I got enough bend on it so I don't need any fittings under ground at the house. That's good news.

In side can I just use 3/4 fittings to tee it in to the mains most likely have plumber sort it out but I like to be in the know . Id like to get a blank for the out side open end or a valve even for temporary water supply plus for testing

my3cents

You can use 3/4 inch brass fitting on the plastic pipe if you like but you should use an insert in the pipe with compression fittings. No inserts needed with the modern Philmac fittings on that gauge of pipe.