What are the general requirements for the size of the access door?

It usually includes two dimensions: height and width. ‌

Height: Generally, the height of the access door should not be less than 1.4 meters, which is to ensure that there is enough space for maintenance operations.

Width: The width of the access door shall not be less than 0.6m, which is also to ensure the operating space during maintenance. In addition, different types of access doors may have different sizes. For example, the size of the manhole door is 1.4m× 0.6m 1. For the electric shaft, its size should not only meet the wiring interval and the size necessary for the layout of terminal boxes and distribution boxes, but also leave an operating distance of not less than 0.8 meters when entering the shaft. For pipeline wells, the size of the door should not be less than 1200*750 mm, which is mainly used for pipeline maintenance.

In short, the size design of the access door needs to take into account the actual operation and maintenance needs to ensure that there is enough space for maintenance work.