Plumbing running in footing

[rrossi]

I am building a small 400sqft house and it is a monolithic slab. The plumbers ran the water lines to the fixtures in the tench for the footing. They are sleeved and it did pass the plumbing inspection but I’m really wondering if this will affect the foundation.
Thanks, Rick.

 

[Mark K]

The phrase monolithic slab is not a precise term and can apply to multiple situations.

Water lines which I assume will have a diameter less than 1" OD should have no impact on the capacity of the footings. The sewer lines may be a bigger issue. Multiple parallel pipes placed close together in the concrete may create problems.

The plumbing code has requirements for sleeves around the pipes as they pass through concrete.

You should not place copper pipe so that it comes in contact with metal in the concrete. It will corrode.

Do not let a plumber near a chain saw

 

[ADAguy]

Just because a plumber (or others) says it is, doesn't always mean it is so. Unintended (overlooked) consequences can and may occur.