CONCRETE BLOCK FOUNDATION
The concrete block foundation is constructed of large concrete blocks typically measuring 16 inches long by 8 inches wide. They do, however, have many other sizes depending on the weight and load of the building that's to be built. The blocks being used will be secured together with mortar and will be resting on a concrete footing deep and wide enough to accommodate all blocks being used.
The blocks are installed using an overlapping pattern to interlock them together, which is similar to bricks, to ensure strength and stability. The concrete blocks are hollow and are joined together using a mix of mortar and steel bars, known as re-bar, which will connect the blocks to the footing.
When a block foundation is being constructed properly, the steel rebar is inserted into the footing while it's being built. Knowing exactly where to install the re-bar, and how to use it properly, is knowledge that only an experienced professional could have. Many homeowners believe that building a cement block foundation is a do-it-yourself job, when in fact, that is not the case.