Concrete Foundations ~ concrete is a material which is strong in
compression but weak in tension. If its tensile strength is exceeded
cracks will occur resulting in a weak and unsuitable foundation.
One method of providing tensile resistance is to include in the
concrete foundation bars of steel as a form of reinforcement to
resist all the tensile forces induced into the foundation. Steel is a
material which is readily available and has high tensile strength.Simple RC Foundations