What are the conditions of tower cranes, strictly prohibited?
A. Products obsolete by the stateB, over the specified service life, failed to assess the quality of the productC, products that do not conform to national or trade standardsD, products without complete security technical records
According to the national standard "tower crane safety regulations" (GB5144-2006) requirements, "the installation and disassembly, section, or drop section operation, wind tower crane at the maximum installation height should be no more than 13m/s, when there are special requirements, according to user and manufacturer's protocol implementation." Wind speed 13m/s, that is, 6 winds.
Tower cranes are prohibited under any of the following circumstances:1, the state explicitly eliminated products;2, more than the required service life, failed to assess the quality of products;3, products that do not meet the current relevant standards of the state;4, there is no complete security technical records of the product.Tower crane (tower crane) is called tower crane, also known as tower crane, originated in Western europe. A revolving crane mounted on top of a tall tower. The working space is large, mainly used for the vertical and horizontal transportation of materials and the installation of building components during the building construction. It consists of three parts: metal structure, working mechanism and electrical system.
