In thunderstorm weather, aerial work and pay-off work are prohibited.

During a thunderstorm (rainstorm, gale above level 5), no work at heights and pay-off are allowed.

Introduction to aerial work: refers to any operation that may fall from a height of 2m or more from the reference plane of falling height. Aerial work is a special kind of work, which has certain dangers. There are five basic types of high-altitude work in building construction: limb, opening, climbing, hanging and crossing.

These types of aerial work are the main places where casualties may occur. Among them, personnel engaged in high-altitude erection, high-altitude installation, maintenance and demolition need to hold a special operation certificate before they can take up their jobs. The so-called aerial work refers to the work carried out by people at a height based on a certain position.

The national standard GB/T3608-2008 "Classification of Work at Height" stipulates: "Work at Height refers to the work that may fall from the falling height datum more than 2m." According to this regulation, the scope of aerial work in the construction industry is quite extensive. When working in a building, if working on a shelf more than 2m, it belongs to aerial work.

In order to facilitate the preventive work in the operation process and effectively prevent people and things from falling from heights, according to the characteristics of the construction industry, various forms of holes and edge operations are carried out in the construction and installation projects.

Hanging and climbing operations, working platforms and interchange operations, and construction operations of various holes, pits, ditches, troughs and other projects carried out on the site outside the main structure and beside the passage shall be treated as aerial work and protected as long as the above conditions are met.