engineering recuitment APSC AE Civil 2020 Test Series Soil Mechanics and Foundation Engineering Bearing Capacity Deep Foundation
Pick up the incorrect statement on dynamic pile driving formulae form the following:
1
In Hiley’s formulae a number of constants are involved, which are difficult to determine
2
The formulae do not take into account the reduced bearing capacity of pile when in group
3
Dynamic formulae are best suited to coarse grained soils for which shear strength is independent of rate of loading
4
Law of impact used for determining energy loss is strictly valid for piles, subjected to restraining influence of the surrounding soil.