Design Check for Crane Supporting Boom for the Crane The Crane tower needs to be supported laterally at certain interval from the RCC Building . The interval can be say 30m. The manufacturer has given a lattice section to be used as a lateral supporting member. Check the capacity of the member under compression: A = 4 Nos X 7.44 Cm 2 = 29.76 Sq.m L = 11m I = A.x 2 = 4 ( 7.44 X (30/2 - 1.81) 2 ) I = 5177 Cm 4 Therefore, r = I/A = 5177/29.74 = 13.1 cm Therefore l/r min = = 950 Kg/cm 2 Therefore, Capacity of the section under compressive load = σa.A = 950 Kg/cm 2 X 29.76 cm 2 Pc = say 28T In the absence of any specific load data, Assuming maximum force in the connecting member can be plus/minus...
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