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Design of Combined Footings - site.iugaza.edu.ps
27 27 Design of Combined Footings Summary of Combined footing Design is shown in the following steps. 1- Select a trial footing depth. 2- Establish the required base area of the footing: Uniform soil pressure is achieved by making the resultant of the service column loads coincide with the centroid of the footing base. 3- Evaluate the net factored soil pressure. 4- Check footing thickness for punching shear. 5- Draw and for footing: The shear force and bending moment diagrams for the footing are to be drawn, considering the footing as an inverted beam subjected to distributed load. Column loads may be considered as concentrated loads to simplify the analysis. 6- Check footing thickness for beam shear. Beam shear capacity is checked against critical factored shear evaluated from Depth of footing may be increased to satisfy beam shear requirement. 7- Compute the area of flexural reinforcement: Flexural reinforcement required in the longitudinal direction is evaluated.
27 27 Design of Combined Footings Summary of combined footing design is shown in the following steps. 1- Select a trial footing depth. 2- …
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