An 18" square solid concrete pile is driven with an impact hammer to a depth of 55ft below grade into the soil conditions below. Calculate the (Qultimate) and (Qallowable) assuming a FOS of 2, assume groundwater is at the surface. Show all work use Alpha and Meyerhof methods.

An 18" square solid concrete pile is driven with an impact hammer to a depth of 55ft below grade into the soil conditions below. Calculate the (Qultimate) and (Qallowable) assuming a FOS of 2, assume groundwater is at the surface. Show all work use Alpha and Meyerhof methods.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Pricing Excavation and Backfill

Backfill, in construction, is the activity of returning the soil and gravel that are removed during building construction or using them again to toughen and support the foundation of the building or any other structural component.

Question

5. An 18" square solid concrete pile is driven with an impact hammer to a depth of 55ft
below grade into the soil conditions below. Calculate the (Qultimate) and (Qallowable)
assuming a FOS of 2, assume groundwater is at the surface. Show all work use Alpha and
Meyerhof methods.
Oft
NC Clay
Ysat = 135 pcf
c = Su = 900psf
55ft
Sand
Kat = 130 pcf
Phi = 38deg
80ft
6. All things being equal for the above problem use the Coyle and Castello method and find
(Qultimate) and (Qallowable)

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