Design of Spread Footing Excel Sheet

PIPE SUPPORT FOUNDATION

DESIGN OF SPREAD FOOTING TO ACI 318-07

DESIGN OF ISOLATED FOOTING

Density Of Concrete

Density Of Soil

Depth Of Foundation

Soil Bearing Capacity

Length Of Footing

Width Of Footing

Thickness of Fdtn.

Width Of Pedestal

Length Of Pedestal

Height Of Pedestal

Coefficient Of Friction

Ground Water Table Ht.

1.0 Load Calculation for Footing & Soil:-

Self Wt. Of Footing

Weight of Soil

Self Wt. Of Pedestal

Weight of Footing + Soil

2.0 Check Maximum and Minimum Pressure at Footing Base:

Area of Footing

Section Modulus

Section Modulus

Total Vertical Load

3.0 Check for Overturning:

Overturning Moment

Due to External Load

Due to wt. of Pedestal

Due to Self Wt. of Fdn

Due to Wt. of Soil

Total Stabilizing Moment

F.O.S. against Overturning

4.0 Check for Sliding:

Resultant Shear Force

Total Vertical Load

F.O.S. against Sliding

5.0 Load Case Check:

Check Max. & Mini. Pressure at Footing Base:

6.0 Check for Overturning & Sliding:

7.0 Check For Shear

a) Two Way Shear

b) One Way Shear 

8.0 Design Of Foundation/Footing:

a) Calculation of Reinforcement at Bottom

b) Calculation of Reinforcement at Top

This presents the design of isolated spread footing using the results from Staad Support Reactions.

Calculation Reference

Reinforced Concrete Footings