# ExerciseA certain site is underlain by clay. A proposed building for this site having a500 kN column load (including the weight of foundation) is designed to besupported on a surface square footing. A field plate loading test wasperformed using a square plate of size 30 cm, Figure 1 displays the pressure-settlement curve, from which the ultimate capacity of the plate was 180 kN/m2.Answer the following questions:According to the plate loading test result, considering a factor of safety of 2against vertical bearing capacity and the allowable settlement of 2.5 cm fordesign requirements, determine the minimum footing size to meet therequirements and the condition which governs the design (bearing capacity orsettlement). Pressure (kN/m2)200180180180160140120120100100806040200.1015202530Settlement (mm)Figure 1. Load-settlement curve of the plate loading test2.

Question
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Step 1

Given data:

The column load on the building (P) is 500 kN.

The footing is a square footing.

The size of square plate (Bp) is 30 cm.

The ultimate capacity of the plate (qup) is 180 kN/m^2.

The allowable settlement (qa) is 2.5 cm.

Step 2

The ultimate capacity of the footing for clay is given by,

Step 3

Plugging val...

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