Evaluation of the limited wind speed for safe use of tower cranes specified in relevant standards of Vietnam

Abstract

The tower cranes are essential equipment in the construction of high-rise buildings. However, they are also easily affected by wind forces and must cease operations during strong winds. The wind speed for the safety operations of tower cranes has been specified in the codes and technical standards for the manufacture and use of tower cranes in various countries, including Vietnam. Nonetheless, the wind speed regulations for the safety operations of tower cranes in Vietnamese standards still have some shortcomings. This article presents the scientific basis of the change in wind speed with height, and analyzes and compares the limited wind speed regulations for cranes use in the design and safety standards of Vietnam with those of similar standards of several countries. Based on that, observations on the shortcomings are offered, and changes and additions to the wind speed regulations and other provisions for the safe operation of tower cranes in windy conditions are suggested.