This paper discusses the influence of weld quality upon the crack formation on the support of an industrial stack under the action of a strong wind. A practical industrial stack in use suffering from the weld crack on its support is investigated. The monitoring result of the stack and its support is analyzed herein. In addition, the influence of weld quality upon the crack formation on the support of the industrial stack is also discussed. Finally, effective methods to alleviate the crack formation phenomenon are suggested. The aim is to improve the structure failure problem of the stack and its support under the action of a strong wind.