What are the basic requirements for the setting of safety evacuation doors?

Sharing more safety evacuation doors is the main exit for people to evacuate safely, and its setting should meet the following requirements: 1. The door should be opened in the direction of evacuation. Second, the evacuation door should not use hanging doors or horizontal sliding doors, and revolving doors are strictly prohibited. Three, when the evacuation door is opened, the door leaf should not affect the width of the evacuation walkway and platform. Four, crowded public * * * places, such as the audience hall, security door should not set the threshold, close to the door 1.4m should not set the step, it is forbidden to lock the evacuation door. The safety door should be equipped with an automatic latch to ensure that insiders can push the handle or rely on manpower to open the door at any time.