A 4-T crane is used to lift a 3m x 1.2m x 200mm pre-cast panel. A spreader beam is needed to ensure the proper distribution of load in the lifting chains. Consider modulus of elasticity, E=200,000 MPa, allowable shearing stress of lifting pin is 50 MPa, the steel plate used in the spreader beam has an allowable bearing stress of 40 MPa. (All measurement in the figure is in millimeters) 1. Determine the required diameter (d) in millimeters of the lifting pin if the allowable shearing stress must not be exceeded. 2. Determine the required thickness (t) in millimeters of the steel plate to be used if the allowable bearing stress must not be exceeded.
A 4-T crane is used to lift a 3m x 1.2m x 200mm pre-cast panel. A spreader beam is needed to ensure the proper distribution of load in the lifting chains. Consider modulus of elasticity, E=200,000 MPa, allowable shearing stress of lifting pin is 50 MPa, the steel plate used in the spreader beam has an allowable bearing stress of 40 MPa. (All measurement in the figure is in millimeters) 1. Determine the required diameter (d) in millimeters of the lifting pin if the allowable shearing stress must not be exceeded. 2. Determine the required thickness (t) in millimeters of the steel plate to be used if the allowable bearing stress must not be exceeded.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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![A 4-T crane is used to lift a 3m x 1.2m x 200mm pre-cast
panel. A spreader beam is needed to ensure the proper
distribution of load in the lifting chains. Consider
modulus of elasticity, E=200,000 MPa, allowable
shearing stress of lifting pin is 50 MPa, the steel plate
used in the spreader beam has an allowable bearing
stress of 40 MPa. (All measurement in the figure is in
millimeters)
1. Determine the required diameter (d) in millimeters of
the lifting pin if the allowable shearing stress must not
be exceeded.
2. Determine the required thickness (t) in millimeters of
the steel plate to be used if the allowable bearing stress
must not be exceeded.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0f08c9ea-7f19-420a-92ba-3aa101d6cd58%2F25089ea1-c9fe-4294-961a-6181e4b4f8bf%2F037f8om_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A 4-T crane is used to lift a 3m x 1.2m x 200mm pre-cast
panel. A spreader beam is needed to ensure the proper
distribution of load in the lifting chains. Consider
modulus of elasticity, E=200,000 MPa, allowable
shearing stress of lifting pin is 50 MPa, the steel plate
used in the spreader beam has an allowable bearing
stress of 40 MPa. (All measurement in the figure is in
millimeters)
1. Determine the required diameter (d) in millimeters of
the lifting pin if the allowable shearing stress must not
be exceeded.
2. Determine the required thickness (t) in millimeters of
the steel plate to be used if the allowable bearing stress
must not be exceeded.
![22
Lifting Pin
450
450
450
450
Spreader Beam
1200
6.25
Lifting Pin
41
Lifting Chain Spot Detail
Pre-CastPanel
2,300 Kg/cu.m.
Spreader Beam Cross-Section
Side View
Front View
00
Lifting Chain B
000€](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0f08c9ea-7f19-420a-92ba-3aa101d6cd58%2F25089ea1-c9fe-4294-961a-6181e4b4f8bf%2F43x8p5_processed.jpeg&w=3840&q=75)
Transcribed Image Text:22
Lifting Pin
450
450
450
450
Spreader Beam
1200
6.25
Lifting Pin
41
Lifting Chain Spot Detail
Pre-CastPanel
2,300 Kg/cu.m.
Spreader Beam Cross-Section
Side View
Front View
00
Lifting Chain B
000€
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