A static load test has been conducted on a 60 ft long, 16-in square reinforced concrete pilewhich has been driven from a barge through 20 ft of water, then 31 ft into the underlyingsoil. Telltale rods A and B have been embedded at points 30 ft and 59 ft from the top of thepile, respectively. The data recorded at failure was as follows: Load at head = 139,220 lb,settlement at head = 1.211 in, settlement of telltale rod A=1.166 in, settlement of telltalerod B=1.141 in. Find: (1) Use the data from telltale rod A to compute the modulus ofelasticity of the pile, then (2) use this E value and the remaining data to compute qn' andthe average fn value.

Answered: A static load test has been conducted…

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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Question

A static load test has been conducted on a 60 ft long, 16-in square reinforced concrete pile
which has been driven from a barge through 20 ft of water, then 31 ft into the underlying
soil. Telltale rods A and B have been embedded at points 30 ft and 59 ft from the top of the
pile, respectively. The data recorded at failure was as follows: Load at head = 139,220 lb,
settlement at head = 1.211 in, settlement of telltale rod A=1.166 in, settlement of telltale
rod B=1.141 in. Find: (1) Use the data from telltale rod A to compute the modulus of
elasticity of the pile, then (2) use this E value and the remaining data to compute qn' and
the average fn value.

Expert Solution

Step 1

Given

$s e t t l e m e n t a t h e a d (ẟ_{1}) = 1.211 i n s e t t l e m e n t a t A (ẟ_{A}) = 1.166 i n s e t t l e m e n t a t B (ẟ_{B}) = 1.141 i n l o a d a t h e a d (P) = 139220 l b A r e a (A) = 16 i n x 16 i n = 256 i n^{2} l = 30 f t = 360 i n$

To find

1) Modulus of elasticity of piles

2) calculate q_t and f_n

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