Water line to detached garage

[btdobie]

So this is shaping up to be my summer for getting the garage completely finished, and I already have most of the insulation and drywall work done. Now I am starting to think about gas and water service. The water is tricky though because I live in an area where water lines must be 5 feet deep to avoid freezing and I must go even deeper to allow slope for the sewage line. My issue is I don't want to dig that deep near the foundation of my house because I am worried about loosening the soil and causing it to settle. Is there another way to get the water line under the footing of the house so Ii can connect it to the plumbing in the house?

 

[rieferman]

A deep trench won't cause the settling you fear IMO

 

[Disney]

I employed the local plumber to do my shop. They dug two trenches, one for gas, one for water. They went under the foundation for the water line. They back filled everything when done. It's been almost two years and I don't have any settling issues.... YET.

 

[Rookie2]

You can drill it or rent a knocker . google :Knocker For Conduit Installation Under Sidewalks

I've pushed oversize pipe under drain pipe then slipped conduit or water lines thru.

 

[BD1]

Core the wall and get some preinsulated or foam filled tubing / pipe. Something like this , but for a single line, unless you want hot and cold
http://www.freeheat4u.com/REHAU-1-INCH-INSULATED-FOAM-FILLED-UNDERGROUND-PIPE_p_41.html

 

[btdobie]

I employed the local plumber to do my shop. They dug two trenches, one for gas, one for water. They went under the foundation for the water line. They back filled everything when done. It's been almost two years and I don't have any settling issues.... YET.

That is encouraging. But I'm starting to wonder if it may be easier to go the long way around and come into the basement on the other side of the house rather than going through the crawl space that faces my garage.

 

[klassenl]

Is your goal to have water in the garage year round? If not shallow bury your water line and winterize it when the cold weather hits.

 

[btdobie]

Is your goal to have water in the garage year round? If not shallow bury your water line and winterize it when the cold weather hits.

I have considered that. It would allow me to use the same trench for both gas and water, but obviously water all year round would be preferable.

 

[4cyclic]

You can lay 2 inch thick xps R10 foam strips over the pipe in the trench . I used 8 inch wide strips in mine, it was a shallow narrow trench at 3ft instead of usual 4-5 ft. It should protect it, unless you get a really cold winter. Also added a couple of valves and air ****** to empty it in case.

 

[matt_i]

Re: settling. If the dirt is filled in smaller lifts and compacted with a jumping jack at every one, then the settling is already done within reason. It will of course take longer, and also need enough width to turn the jack around, and make sure proper fresh air ventilation flow is there to keep from hurting yourself with carbon monoxide. Probably unlikely in a 60" deep trench but worth mentioning.

 

[johnehr]

I've looked into a similar project, water line from house to shop in Minnesota. The best option I've found is directional drilling (ex: http://construction.about.com/od/Special-Construction/a/Horizontal-Directional-Drilling.htm) Much cheaper and lower impact than trenching, and a local company that specializes in this told me that if I cut a 15"x15" hole in my basement floor, they could easily bring a 1" pipe from the shop, 6' underground, under the basement floor, and up that hole.