454 For Problems 20.17 through 20.20, use the matrix approach to solve fo the member end forces. In each case the displacements at each DOF are given. Perform calculations in units of k and in. 1000 lei T 1250 in and

454 For Problems 20.17 through 20.20, use the matrix approach to solve fo the member end forces. In each case the displacements at each DOF are given. Perform calculations in units of k and in. 1000 lei T 1250 in and

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

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

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454
DIRECT STIFFNESS METHOD FOR
For Problems 20.17 through 20.20, use the matrix approach to solve for
the member end forces. In each case the displacements at each DOF are
given. Perform calculations in units of k and in.
P20.17 E = 1900 ksi, I = 1250 in, and
a
0.0
in.
b
0.001
rad
{u} (¹) =
C
1.1
in.
d
-0.0015
rad
(Ans: V₁ = -6.86 k, MB = 541.2 k-in.)
a
1
- 14 ft -
Problem 20.17

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