Tower crane and construction hoist service life? What are the norms and standards? How to detect?
more than 1250KN.m (including 1250KN.m), the factory more than 20 years of age (including 20 years);Construction hoist: SC years of construction for more than 8 years (excluding 8 years) SS construction hoist; factory life of more than 5 years (excluding 5 years) of the construction hoist.Excluding other areas
According to Hangzhou quality safety supervision station (2011) No. 56 document:Six, strengthen the use of longer construction crane management1, more than the required number of tower cranes and construction hoist should be qualified units for security assessment, the specific years with reference to the following requirements.Tower crane: 630KN.m (excluding 630KN.m), factory more than 10 years of age (including 10 years); 630KN.m1250KN.m (excluding 1250KN.m), factory more than 15 years of age (including 15 years);
The tower crane service, QTZ40 state (including 40) the following ten years, more than QTZ63, the age of fifteen years, the construction elevator used for ten years; but specific to various provinces and cities are different, such as Jiangsu Province, the 40 tower crane can be used 8-10 years, QTZ63 tower crane used for 15 years, 8 years of construction hoist. Of course, we should not blindly look at the provisions, tower cranes and the use of strength sometimes determines the life of it!
