Calculate the elastic settlement under the center of the flexible foundation shown in the figure below using Schmertmann's method. Assume t 1 year, ysoil 120 lb/ft and divide the soil into 1.5 ft intervals. Note that the equations of I, are given in the sketch below for your convenience. Assume the surcharge applied by the foundation is Ao=25,000 lb/ft2.

Calculate the elastic settlement under the center of the flexible foundation shown in the figure below using Schmertmann's method. Assume t 1 year, ysoil 120 lb/ft and divide the soil into 1.5 ft intervals. Note that the equations of I, are given in the sketch below for your convenience. Assume the surcharge applied by the foundation is Ao=25,000 lb/ft2.

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

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

8) Calculate the elastic settlement under the center of the flexible foundation shown in the
figure below using Schmertmann's method. Assume t = 1 year, ysoil=120 lb/ft and
divide the soil into 1.5 ft intervals. Note that the equations of I, are given in the sketch
below for your convenience. Assume the surcharge applied by the foundation is
Ao=25,000 lb/ft.
Soil
D=3'
Δσ
B = 6', L = 24'
E, (Ib/ft').
42) = 0.1 + 2*0.4/3
120,000
3'
3'
240,000
6'
142) = 0.5 - 0.5 (z-3)/9-
9"
9'
-360,000
12'
12'-
z(ft)
z(ft),

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