A RC footing is to be constructed 6 ft below the grade. If allowable soil pressure is 5 ksf and self weight of soil is 100 pcf, what will be effective soil pressure at bottom of footing if depth of footing is 20”:

These are the eight major typre of strutures that are studied in civil engineering:
1. Load-bearing structures
2. Truss structures
3. Frame structures
4. Cable and arch structures
5. Pre-engineered structures
6. Mass structures
7. Tensile structures
8. Composite structures