This paper will introduce the construction specifications of civil air defense interior wall, including settlement joint, expansion joint, explosion-proof settlement joint, closed passage, gas passage, decontamination room, poison filter room, diffusion room and other rooms, passages, the top of basement protection zone, thresholds, anchors of civil air defense door frames, and wartime closed places of entrances and exits.

Settlement joints and expansion joints are prohibited.

Settlement joints and expansion joints should not be set in the interior wall of civil air defense, and explosion-proof settlement joints must be set when necessary.

Easy to clean

The walls, top surfaces and floors of rooms and passages close to the internal walls of civil air defense, such as closed passages, anti-virus passages, decontamination rooms, poison filter rooms and diffusion rooms, shall be flat, clean and easy to clean.

It is forbidden to paint or level with cement mortar.

Cement mortar shall not be used to paint or level the top of the basement protection zone of civil air defense interior wall.

Threshold height difference is not less than150 mm.

There is a threshold under the non-civil air defense wall, and the height difference between the threshold and the floor building should not be less than150 mm; ; There is no threshold under the movable civil air defense door, and the bottom of the door frame is the same height as the building floor. The anchor hook of civil air defense door frame should extend into the structural layer.

Reserved groove

A groove is reserved on the side of the non-civil air defense wall for blocking the entrance and exit in wartime, and the anchor hook of the embedded part should extend into the structural layer. Wartime sealing frame should be painted or brushed with cement mortar with steel wire mesh at ordinary times.