The construction elevator can not operate during the use of several stages of wind power
The top wind speed is no more than 20m/s, which is level 8, the gale level 17.2-20.7 m/s, I am a tower crane and construction elevator accessories. I hope my answer will help you.
11, when the wind speed exceeds 20m/s and the bad weather, such as hail, not use the lift." I'm a construction elevator This is the norm It's about a six-stage wind by 20m/s.
Well, there are no definite rules. It's up to you to decide whether to use it or not