STRUCTURAL ANALYSIS (LL)
6th Edition
ISBN: 9780357030967
Author: KASSIMALI
Publisher: CENGAGE L
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Question
Chapter 9, Problem 21P
To determine
Find the absolute maximum bending moment in a 75 ft long simply supported beam.
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Determine the absolute maximum bending moment in an 8 m long simply supported beam due to the axle loads of the moving HL-93 tandem shown in Fig. P9.12.
The simply supported beam in Fig QB1a is made by gluing two pieces of wood
of rectangular cross-section as shown in Fig QB1b, i.e. the top board (flange) is
glued onto the bottom board of the web. The supports at A and B exert only
vertical reactions.
150mm
T
30mm
A 4m
C
30mm
150mm
6.5 kN/m
Fig QB1a
4m B
y = 0.120m
Fig QB1b
Calculate the support reaction forces, and hence sketch shear and
bending moment diagrams indicating the values at A, B, C. Describe how
shear force and bending moment vary along the beam;
Compute the moment of inertia of the section about the neutral axis. The
position of the neutral axis is y = 0.120m as shown in Figure QB1b;
Determine the maximum shear stress in the glue necessary to hold the
beam together along the seam where they are joined.
Q2/ The beam shown in the fig. is made from two boards. Determine the maximum shear stress in the glue necessary to
hold the boards together along the seam where they are joined. The supports at B and C exert only vertical reactions on the
beam.
6.5 KN/m
* ISO Mm y 3omm
N
150mm
B
C
30mat
2m
2 m.
4 m
%23
Chapter 9 Solutions
STRUCTURAL ANALYSIS (LL)
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