Foundations - (1)

Foundations - (1)

1. Function

   • Evenly transmits load(s) to the ground the foundation rests on (subsoil) safely & eliminate damaging ground movement during construction and throughout the anticipated life of the structure
     • Load
       • Dead
       • Structual
       • Wind
       • Imposed
     • Damaging ground movement
       • Frost heave - caused by freezing and expanding water
       • Soil movement
         • Change in volume of water in ground - when soil wet / dry
       • Subsidence
       • Trees
         • Abstraction from vegetation
       • Weather
       • Bearing Capacity
         • Defined: Maximum Pressure of ground
         • Problem: Load exceeds bearing capacity
           • Downward movement of foundations occurs
             • Solution
               • Reduce load carried by foundation
               • Increase plan size of foundation to reduce load per unit area
       • Soil heave
       • Soil shrinkage