Burying pipes in a concrete slab is a criminally stupid idea. I don’t get why they can’t bury wide PVC pipe in the slab as a conduit, then run PEX pipe and a few pull ropes through it to wherever the manifold will be, making it child’s play to replace any leaking pipes in future.
Or just form channels in a 2″ layer of concrete poured on top of the slab to allow for pipes. Frankly, if this were my property, I’d be so irritated as to figure out a way to replumb.
