Gantry Crane

if i want to lift a 40m steel gantry with 50T weight, how many cranes i should use? which capacity?

if there is some chart or reference about this calculation, please let me know
50T=50ton=50000 kg, if i use 150ton Crawler Crane… how many unit i need to do it? is 1 unit enough?

depends on the size of the cranes, and the angle they are lifting at.

Does T indicate ton? there are 3 or 4 different definitions of “ton” depending on where you live. Which one is this?

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