The product is almost five to seven times stronger than the concrete and this is because of the basic material structure of the brick. Installing conduit under slabs provides a path for electrical wires to travel. I am in the process of getting an excavator and putting in a drain from my foundation to the ditch ( the joys of country living 8) because a birch tree and a lilac bush grew on top of the white PVC and then crushed it. You could dig a channel the right size to install the drain, set it in and pack tightly around it with dirt. I have never seen a sleeved pipe access through a poured concrete wall when the hole is made after the wall is poured. //