PPSC CE Quiz 7

Which of the following are the assumptions used by Terzaghi in deriving bearing capacity equation?

(i) The base of the footing is smooth.

(ii) The load on the footing is vertical.

(iii) The length to width ratio of footing is infinite

(iv) The shear strength of soil above the base of the footing is negligible.

Which of the following is not true for dynamic method?

(i) Dynamic method is suitable for coarse grain as well as fine grain soil.

(ii) It is not applicable for group action to find ultimate load.

(iii) Energy loss due to vibration and heat are not accounted in dynamic method formulae.

(iv) It is not suitable for clays.

Calculate the ultimate bearing capacity of a footing on a cohesive soil (c = 25 kN/m², ϕ = 0, γ = 18.5 kN/m³) if the depth of footing is 1.5m.

Skin friction capacities of a 40 cm × 40 cm size concrete pile for the portions A, B and C are 18.5 kN, 45.6 kN and 607 kN respectively as shown in figure below. Assume point load capacity of 10500 kN/m², the total pile load capacity will be

What will be the ratio of ultimate bearing capacity of a square footing to circular footing resting on a cohesionless soil if the diameter of the circular footing is 1.5 times the size of the square footing?

In under-reamed pile construction, the ratio of bulb diameter to shaft diameter is generally