When designing lugs, who is responsible for the local stress analysis of the tower shell at the lug location?
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The current division of responsibilities is that the installation contractor is responsible for the design of the lugs, while the tower manufacturer is responsible for their production. However, there is a problem at present: the party responsible for the lug design (the installation contractor) claims that it is only responsible for the design of the lugs and not for the local stress analysis of the tower shell at those locations. The party responsible for manufacturing the lugs (the tower manufacturer) also says that it is not responsible for such stress analysis. There is currently a dispute regarding this matter. So, who is responsible for the local stress analysis of the tower shell at the lug locations?
Did the designer of the tower’s shell not include mounting lugs? So what is the design for those lifting lugs? Should only the design stress of the lifting lugs be considered?
The design of the lifting lugs, as well as the local stress analysis of the tower shell at those locations, should be the responsibility of the tower design team
In practice, it is the construction company that designs the lifting lugs, but they are manufactured by the tower manufacturer. It would be better to have the tower manufacturer handle both the design and manufacturing, as well as the stress analysis; it’s just a matter of cost. This is how we do it, and there are also issues related to heat treatment；
Some irresponsible people came up with irresponsible rules, resulting in the current situation of mutual blame-shifting.