Design of Shallow Foundation (Isolated Footings)

Aim :-

Design a square footing for a column size of 400x400. The compression axial load for the load combination of (1.5 DL + 1.5 LL) is 2000 KN. The safe soil bearing capacity is 150 KN/m2 at a depth of 2 metres below E.G.L. Participants are free to go for either a tapered or stepped footing. Besides the total axial load, also account for the self-weight of the footing and soil above it. Assuming M25 concrete grade.

Perform following checks:-

• If the gross bearing pressure under the footing is within safe bearing capacity
• Provide sufficient depth and longitudinal steel for resisting bending and shear
• Sufficient anchorage for column steel into the footing
• If the bearing pressure at column-footing joint is within 0.45 times the maximum concrete compressive strength

Intoduction:-

• Footings are Foundation Units Transfer Loads From Structure to the Soil
• The Distribution of Soil Pressure Under Footing is a Function of the type of Soil and the relative rigidity of soil and foundation

Mostly Common Type of Footings Used are;

• Strip or Wall Footings
• Spread Footing
• Stepped Footing
• Tapered Footing
• Pile Cap
• Combined Footing
• Mat Or Raft Footing
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Result:-

• Sloped Isolated Footing For a Square Column has been Designed by Given Specification