A 4-T crane is used to lift a 3m x 1.2m x 200mm pre-castpanel. A preader beam is needed to ensure the properdistribution of load in the lifting chains. Considermodulus of elasticity, E=200,000 MPa, allowableshearing stress of lifting pin is 50 MPa, the steel plateused in the spreader beam has an allowable bearingstress of 40 MPa. (All measurement in the figure is inmillimeters)Lifting Pin450450450Spreader Beam12006.25Lifting Pin41Lifting Chain Spot DetailPre-CastPanel2,300 Kocu.m.Front ViewSide ViewSpreader Beam Cioss-Section1. Determine the total load in kN the crane has to carry ifthe lifting accessories (spreader beam, lifting chains andhooks) has a total of 720 kgs.2. Determine the average normal stress on each leg ofthe lifting chain A and B.3. Determine the required diameter, d in millimeters, ofthe lifting pin if the allowable shearing stress must notbe exceeded. (Round to the nearest whole number)4. Determine the required thickness t, in millimeters, ofthe steel plate to be used if the allowable bearing stressmust not be exceeded. (Round to the nearest wholenumber) 22Lifting Pin450450450450Spreader Beam1206.25Lifting Pin41Lifting Chain Spot DetailPre-Cast Panel2,300 Kg/cu.m.Spreader Beam Cross-SectionFront ViewSide ViewLifting Chain B

A 4-T crane is used to lift a 3m x 1.2m x 200mm pre-cast panel. A preader 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)

A 4-T crane is used to lift a 3m x 1.2m x 200mm pre-cast panel. A preader 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)

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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