Foundation Example 1 : Isolated Square Footing
- Harika Inanc (Unlicensed)
Design and detail a typical square footing og a six bay by five bay seven story building, founded on stiff soil, supporting a 24 in. square column.The building has a 10 ft high basement. The bottom of the footing is 3 ft below the finish grade (refer to Fig. E1.1). the Building is assigned to Seismic Design Category B.
Given :
Column load
Service dead load D = 541 kips
Service live load L = 194 kips
Seismic load E = ±18 kips
Material Properties
Concrete compressive strength fc' = 4 ksi
Steel yield strength fy = 60 ksi
Normalweight concrete λ = 1
Density of concrete = 150 lb/ft^3
Allowable soil bearing pressures
D only : qall,D = 4000 psf
D+L : qall, D+L = 5600 psf
D+L+E : qall,Lat = 6000 psf
Footing dimensions :
Width (both directions)= 12 ft
Thickness = 30 in.
| AEC | BOLT Building Design Suite D / C ratio | Reference Value D / C ratio | Difference % |
|---|---|---|---|
Soil capacity | 0.8653 | 0.8653 | 0% |
One way shear capacity | 0.6602 | 0.6638 | 0.53% |
Flexural capacity | 0.875 | 0.88 | 0.45% |
Bearing capacity | 0.3771 | 0.3771 | 0 |
Go to library object:https://building.openbrim.org/objidon91woljjam3o911lfkn.libobj