Contractors regularly look at the basic U.S. residential concrete foundation as being a three-day process. Excavation, footing forming and concrete placement on day one; wall forming and concrete ...
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 ...
Freshly placed concrete in wall and column forms behaves like a liquid producing hydrostatic pressure that acts laterally on the vertical faces of the formwork. However, due to concrete stiffening, ...