Step by Step Procedure of Footing Design: Step 1: Determining size of footing: Loads on footing consists of load from column, self weight of footing and weight of soil above footing. For simplicity, self weight of footing and weight of soil on footing is considered as 10 to 15% of the vertical load. Learning design with examples is always the best method of learning. Step by step procedure for structural design of isolated footing is discussed below: Isolated Footing Design Example: Let us consider an isolated footing for an RCC column of size 450mm x 450mm. Loads from this column to the foundation are: Vertical Load: 1000 kN Uniaxial Moment: 100 kNm The safe bearing capacity (SBC) of soil is 300 kN/m2. The grade of concrete to be used is M30 and grade of steel is Fe415. ISOLATED FOOTING DESIGN EXAMPLE AND EXCEL SHEET Isolated footing design example with step by step procedure and isolated footing design excel sheet (spreadsheet) is also provided for easy and fast calculation.
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