Design Of Spread Footing As Per ACI 318-07 Spreadsheet

• 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

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