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Figure 4.16

By definition the foundation should be considered as a slab.

Critical perimeter at 1.5c/ from face of column should be checked for punching. u = 2x (1.5 x 405) + 4 x 400 = 5417 mm

In foundations the applied shear may be reduced to allow for the soil reaction 4.3.4.1(5) within the critical perimeter.

Enclosed area

Total width = (3 x 405) + 400 Corner radius = 1.5 x 405 Area = 1.6152 - (4 -x) 0.6082

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