A gantry (crane) girder is subjected to horizontal surge loads in ADDITION to vertical wheel loads. The surge load is taken as:
Choose the correct answer
5% of the total wheel load (dead + crane load)
10% of the total load lifted (hoist load) acting horizontally
Equal to the dead weight of crane only
The wind load on the crane
Correct Answer
B. 10% of the total load lifted (hoist load) acting horizontally
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As per IS 875 and crane codes: surge (horizontal transverse) load = 10% of the weight lifted by the crane (hoist load), applied at the crane rail level. Longitudinal braking force = 5% of the static wheel loads.
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