Directions: Show your solutions explicitly, i.e., do not just write the final answer. Always simplify your final answer. Write legibly in engineering lettering. Problem I. In a high-rise building construction, a boom is being used to efficiently transport materials from the ground to a certain level in the building. Shown below is a figure of the boom supporting the load 'P.' Value of P = 139 KN 100 mm 87.5 mm 2P 12.5 mm dia 19 m A B -10 m- At the right is the support detail at B. a) What is the normal stress (in MPa) the boom is subjected to if its cross sectional area is 1174 mm? ? b) Calculate the shear stress in the pin (in MPa). c) If the allowable stress in the steel cable AC is 170 MPa, what should be size (diameter, in mm) of the cable to sufficiently withstand the force it is subjected to?
Directions: Show your solutions explicitly, i.e., do not just write the final answer. Always simplify your final answer. Write legibly in engineering lettering. Problem I. In a high-rise building construction, a boom is being used to efficiently transport materials from the ground to a certain level in the building. Shown below is a figure of the boom supporting the load 'P.' Value of P = 139 KN 100 mm 87.5 mm 2P 12.5 mm dia 19 m A B -10 m- At the right is the support detail at B. a) What is the normal stress (in MPa) the boom is subjected to if its cross sectional area is 1174 mm? ? b) Calculate the shear stress in the pin (in MPa). c) If the allowable stress in the steel cable AC is 170 MPa, what should be size (diameter, in mm) of the cable to sufficiently withstand the force it is subjected to?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Directions: Show your solutions explicitly, i.e., do not just write the final answer. Always simplify your
final answer. Write legibly in engineering lettering.
Problem I. In a high-rise building construction, a boom is being used to efficiently transport materials
from the ground to a certain level in the building. Shown below is a figure of the boom supporting the
load 'P.' Value of P = 139 KN
100 mm
87.5 mm
2P
12.5 mm
dia
10 m
-10 m-
At the right is the support detail at B.
a) What is the normal stress (in MPa) the boom is subjected to if its cross sectional area is 1174
mm? ?
b) Calculate the shear stress in the pin (in MPa).
c) If the allowable stress in the steel cable AC is 170 MPa, what should be size (diameter, in mm) of
the cable to sufficiently withstand the force it is subjected to?
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