Wind loads from Rotorcraft Wind loads from Rotorcraft CivilGator78 (Civil/Environmental) (OP) 7 Nov 11 02:36 I need to understand the windloads from helicopters. Facilities in the LZ are being damaged as they are unable to handle the loads. RE: Wind loads from Rotorcraft MiketheEngineer (Structural) 7 Nov 11 11:35 Check with the chopper mfgs. They know. Also, some building codes have some specs. But 100 mph is not out of the question. Again, it depends on the size of the chopper - I am sure a two man Rotorway is quite a bit less than an Osprey!!