A wooden pile is being driven with a drop hammer weighing 20 kN and having a free fall of 1.0m. The penetration in the last blow is 5 mm. The load carrying capacity of the pile as per engineering news Formula is.

A wooden pile is being driven with a drop hammer weighing 20 kN and having a free fall of 1.0m. The penetration in the last blow is 5 mm. The load carrying capacity of the pile as per engineering news Formula is.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter12: Pile Foundations

Section: Chapter Questions

Problem 12.25P

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Concept explainers

Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.

Question

A wooden pile is being driven with a drop
hammer weighing 20 kN and having a free fall of
1.0m. The penetration in the last blow is 5 mm.
The load carrying capacity of the pile as per
engineering news Formula is.

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A drop hammer is used to drive a wooden pile. The hammer weight is 30 kN and its free falling height is 0.9 m. The penetration in the last blow is 14 mm. The load carrying capacity of the pile (to the nearest integer) according to the Engineering News formula is kN.
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Using Engineering News formula, the allowable Load (Q) of a wooden pile hammered with a drop hammer (W = 30 kN), having free fall (H) 1.5 m, penetration in last blow (S) 5 mm, using empirical constant (C) as 2,5 and factor of safety as 6, will be
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