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Construction Management
5th Edition
ISBN: 9781119256809
Author: Daniel W. Halpin, Bolivar A. Senior, Gunnar Lucko
Publisher: WILEY
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Chapter 5, Problem 8RQE
To determine
Find whether it is possible to characterize the legal structures of local contractors using Yellow Pages as a guide.
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Students have asked these similar questions
A standard steel pipe (D = 3.500 in.; d = 3.068 in.) supports a concentrated load of P = 630 lb as shown. The span length of the
cantilever beam is L = 4 ft. Determine the magnitude of the maximum horizontal shear stress in the pipe.
720 psi
761 psi
508 psi
564 psi
667 psi
L
Pipe cross section.
A beam is subjected to equal bending moments of M₂ = 59 kip-ft. The cross-sectional dimensions are b₁ = 7.5 in., d₁ = 1.4 in., b₂ = 0.55
in., d₂ = 5.0 in., b3 = 3.2 in., and d3 = 1.5 in. Determine:
(a) the centroid location (measured with respect to the bottom of the cross-section), the moment of inertia about the z axis, and the
controlling section modulus about the z axis.
(b) the bending stress at point H. Tensile stress is positive, while compressive stress is negative.
(c) the bending stress at point K. Tensile stress is positive, while compressive stress is negative.
(d) the maximum bending stress produced in the cross section. Tensile stress is positive, while compressive stress is negative.
M₂
Z
M₂
Answer:
(a) y= i
Iz=
in.
in.4
S=
i
on,3
(b) σH=
i
ksi
(c) OK = i
ksi
(d) σmax=
ksi
K
b₁
d₁
H
b₂
b3
d₂
d3
A cantilever timber beam with a span of L = 2.9 m supports a uniformly distributed load w. The beam width is b = 300 mm and the beam
height is h = 160 mm. The allowable bending stress of the wood is 7 MPa. Determine the magnitude of the maximum load w that may
be carried by the beam.
Answer: w=
I
i
kN/m.
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