A simply supported beam 10-m long is acted upon by a uniformlydistributed dead load of 20 kN/m and a uniformly distributed liveload of 48 kN/m throughout its span.
Design the footings of each columns located at the supportsusing the following data
- Depth of Footing(Df)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â =Â Â Â Â Â Â Â Â Â Â Â Â Â 1.20meters
- Allowable Soil Pressure(qall)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â =Â Â Â Â Â Â Â Â Â Â Â Â Â 210kPa
- Unit Weight of Soil(γs)                                                =             17kN/m3
- Unit Weight of Concrete(γc)                                      =             24kN/m3
- Design Compressive Strength of Concrete(f’c)     =             27.6MPa
- Yield Strength of Reinforcing Steel(fy)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â =Â Â Â Â Â Â Â Â Â Â Â Â Â 276MPa
- Use 16 mm diameter reinforcing bars for both footing andcolumn.
Assume that:
- A square column with a dimension of 450 mm is located on theleft support.
- A circular concrete column of 500 mm in diameter is located onthe right support.
- Property line is located 0.50 meters from the left support and2.0 meters from the right support.
Determine the following for the designed footings on the leftand the right side of the beam:
- Approximate thickness
- Effective allowable bearing capacity
- Dimension of the footing
- Ultimate soil bearing capacity.
- Minimum depth against One – Way Shear
- Minimum depth against Two – Way Shear
- Design and detail of reinforcement
- Development length adequacy
- Concrete bearing stress adequacy
- Draw the footing in detail.
BONUS:
- Minimum depth against Moment
- Steel Ratio
- Coefficient of Resistance
