Basement perforations (ie sewer lines, H20)

[rdzone]

Well I am in the planning phase of building a cottage.  I think my wife and I have finally agreed to build the 2 story 20' x 34' plan.  Now for the question.  I have done a lot of framing, but never any full foundations (full basement)  I have done some post and pier cabin foundations, but they aren't the same.  I am going to go with ICFs and will be taking a class on that in March, but I haven't really seen or heard anyone talk about perforations through the foundation.  I am mainly concerned with septic (leach field) and water (well) lines.  I live in Alaska and am planning on a full basement.  Do you run the lines under the footers or make provisions to have them pass through the wall some where?  Any information would be greatly appreciated.  Thanks.

[peg_688]

 Generally you put in a "buckout " either a box the same width as the inside of the form so you build in a "void" where you want it, at the right height or a piece of ABS / PVC pipe larger than the final water or sewer line is placed inside the form doing the same thing except you get a sleeved round hole .

 On other you do not want to do is pour the concrete right around the final pipe any shift in the land / grade and the pipe would crack / snap if poured in solid , ya want it to" float" thru the hole provided.

Good luck , PEG

[keyholefarmhouse]

What do you use to fill the gap between the pipe and the box out?

keyhole

[glenn kangiser]

Spray foam would work - and as self defeating as it seems, around here they used to let you grout it back in with cement - like nothing will shift later - it probably won't but seems to defeat the purpose.  Pipes can also be wrapped with cardboard then poured around.  The carboard makes a loose space.  Boxes can be filled with sand and poured around or over then broken out later also.

I guess you could grout close then spray or strip (round or rectangular strips premade)  foam the rest.

[PEG688]

Like Glenn said just grout back in with a cement product like Quick plug a hydro cement product made for such work .

   
In a full basement situation  you should plan on a equip. type "area" to bring all your utility's in at so the rest of the basement can be used more readly.

 Good luck, PEG