Detached garage help

[kirth]

I am in the process of getting ready to have my detached garage built. Its about 60' from house. I have to run the essentials to it, gas, electrical and water.

My yard is pain in the **** to work on, full of big trees and the garage will be about 25' lower than the house. The slope is pretty steep.

I live in MN so the water will be the tough one. Electrical and gas I can do with a normal trencher to the required depth.

Water of course should be below the frost line. The only way to get the water line that deep is with a mini excavator. The hill and I don't want to cut a bunch of tree roots and kill the trees.

Its nice to have water in the garage in winter to wash cars, there will be a floor drain

I was wondering if anyone has had this issue? I was thinking of going as deep as I could with the trencher, running a 3/4" Pex and putting a inside the pipe heat tape in the pipe and wrapping it and laying some high density foam over the pipe.

 

[brewchief]

You might see what a directional boring company would charge, they could pull a pipe through below the frost line with minimal damage, probably have them do gas and power as well.

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[u2slow]

I'd concern myself with the integrity and prep of the site the garage will be situated on. That burned me pretty good.

Running utilities to a building can be done later. Put some blockouts/sleeves in the concrete pour to make things easy.

 

[Pluribus]

Plenty of trenchers out there that will do 72" depth, which I'm guessing is ok for most of MN, and there are others that can go deeper. That would be a whole lot less invasive vs. a mini-ex. As I understand it, a lot of the heavier duty ones go through roots, too. Is the slope so steep you could't use one on it?

 

[ycgoat]

Some places have bed rock to deal with (we don’t in SE Va), which makes trenchers and directional boring useless. Here I use $22/ft as an estimate for boring.


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[dfiler2]

Insulating on top of the line will work well, especially if the line runs in an area where the snow does not get removed where it is buried.

 

[Bert_]

Most places that rent equipment will have a trencher that will do 5-6' deep. It's pretty common.

 

[kirth]

Thanks everyone

 

[T VETTE]

Really need water in there? Seems like a lot of work to wash a car a few times. I just built a 4 car and it wasn't worth the hassle to do it. Have a hose bib near by for that rare occasion to wash out the place.

 

[dcg9381]

I'd think you could get pex under the frost line pretty easily... You could also consider PEX encased in PVC..

For temporary water, what we did was install a hose bib without a blackflow preventer and then ran water to the building that way.

I'll give you two other options:
1) We do water collection. Our tanks are outside exposed, but you could bury a cistern.
2) Alternatively, some hangers around here do water collection to the inside of the building. A few hundred gallons, although heavy, supplies a lot of "garage water" - you'd be surprised how much rain a roof can collect.