ESE 2021 Technical Quiz || Deep Foundation

A concrete pile has size 40 cm × 40 cm, ultimate load carrying capacity of pile is 1200 kN,  and ∝ is 50 kN/m² and 0.6 respectively. What is the length of pile?

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.

A pile of 60 cm diameter and 15 m length is driven in clay of average unconfined compressive strength of 120 kN/m². The ultimate pile load carrying capacity of this end-bearing pile will be? Assume ∝ = 0.75

Determine the group statement Ratio of a pile group of size 3.5 m embedded in sand.

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