Crane is to further strengthen the supervision of the construction project tower crane anti-collision prevention and reduction of the tower crane production safety accidents due to collision, combined with the characteristics of the construction project and civilization construction management, and hope that the construction unit to pay attention to some of the everyday little things to avoid the unnecessary risk. 

 Boom on the crane principle is not out of the site fence is indeed due to site conditions can not avoid lifting the arm stretched out walls to install anti-collision device, or use the tower crane boom, to ensure that the tower crane car is always maintained at operation within the walls of the site. 

 Crane more than one job, the construction general contracting unit shall organize and develop and implement security measures to prevent the tower crane collide and install anti-collision device. Different construction units in the same construction site tower crane operations, the construction unit shall coordinate the organization to develop security measures to prevent the tower crane collide and install anti-collision device. 
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