Strap Footings: How to Calculate the Bearing Pressures

By: Javier Encinas, PE | April 16, 2017 ASDIP FOUNDATION includes the design of concrete strap footings. This structural engineering software is based on the latest ACI 318 provisions. This post explains the calculation of the soil bearing pressures in a typical strap footing. A strap footing usually supports two columns, so it's a special type of combined footing. If a property line exists at or near the edge of an exterior column, a normal isolated footing would be placed eccentrically under this column and it would tend to tilt. This problem may be prevented by connecting this footing with [...]