Deeper beams with more steel are stronger.
Foundation ready to pour, note beams, plumbing, steel, interior forms and chairs
Ambassador has always respected the importance of a good foundation. Almost without exception, all homes built by Ambassador during its history have a stronger foundation than required by code at the time of their construction.
Today’s code requires each foundation to be designed by a Registered Engineer. The engineer requires a soils report which tells him what to expect from the soil in bearing capability and expansion/contraction resulting from wet and dry weather cycles.
Foundation design has undergone considerable upgrades during the 45+ year history of Ambassador. In 1972 the city of Fort Worth accepted foundation designs drawn by plan designers with no soils information. The stiffening beams built into foundations have gone from typically 20 inches deep with 4 pieces of 1/2″ rebar steel (almost all Ambassador homes were upgraded to being built with 4 pieces of 5/8″ steel) with 40,000 psi tension strength in the 1970s. Todays foundations typically have beams 26 inches deep with 5 or 6 pieces of 5/8″ rebar steel with 60,000 psi tension strength. This is a huge increase in the required strength of foundations.
Foundations have lots of steel you cannot see
Foundation workman’s pride, not visible after concrete poured