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 total load in kN, the crane has to carry if the the lifting accessories (spreader beam, lifting chains and hooks) has a total mass of 720 kgs. 2. Determine the average normal stress on each leg of the lifting chain A and B.

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 total load in kN, the crane has to carry if the the lifting accessories (spreader beam, lifting chains and hooks) has a total mass of 720 kgs. 2. Determine the average normal stress on each leg of the lifting chain A and B.

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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