Q. Hello, Tim. I was doing research about house foundations and came across interlocking foam forms that stack on top of one another. They assemble much like children’s plastic blocks. Does a concrete ...

Q: I was doing research about house foundations and came across interlocking foam forms that stack on top of one another. They assemble much like children's plastic blocks. Does a concrete foundation ...

For decades, concrete walls and foundations were made the same way. Plywood or plain boards are built into forms that contain steel reinforcing bars (rebar) and into which wet concrete is poured. When ...