Civil air defense reserved and embedded involves water supply and drainage, ventilation, and electrical in wartime and peacetime. Before construction, it is necessary to look at the peacetime, wartime drawings and structural drawings together, carefully analyze each external wall, empty wall, and unit partition wall, and carefully study each wartime functional room (mainly closed passages, poison filtration rooms, wartime rooms, diesel power stations, etc.), and do not miss any casing. The following is based on the interpretation of engineering examples for your reference and implementation.
wartime
One
Civil air defense electrical reservation
The construction content includes: (1) reserved casing on the civil air defense door, (2) reserved line pipe for explosion-proof wave cable well, (3) grounding of civil air defense door and door frame, (4) concealed line pipe sealing treatment, (5) explosion-proof button.
1. Reserved casing on the civil air defense door
Note: 4-6 spare pipes should be embedded in the entrance and exit, the protective closed door of the connecting port, and the door frame wall of the closed door, with a pipe diameter of 50-80mm, and the thickness of the pipe wall is not less than 2.5mm.
During the war, 6 DN50 threading pipes were reserved on the closed door of the passage
2. Reserved line pipe for explosion-proof cable well
Explosion-proof cable wells should be set up for outdoor incoming lines, and explosion-proof cable wells should be set up close to the outside of the outer wall. In addition to the number of wall pipes required for the design, 4-6 spare pipes should also be left for expansion.
3. Civil air defense doors and door frames are grounded
4. Concealed line pipe airtight treatment
5. Explosion-proof button (must be set next to the main port)
Two
Civil air defense ventilation is reserved
The construction content includes: (1) airtight measuring pipe of closed passage, (2) differential pressure measuring pipe, (3) ventilation pipe through the wall.
Key points to note: quantity, location, elevation, pipe diameter, length, practice (threading, welding, rust removal, anti-corrosion paint).
1. Air Tight Measuring Tube(07FK02-60)
5cm out of the wall, threading and sealing at both ends.
2. Differential pressure measuring tube (07FK02-58)
5cm out of the wall, threading and sealing at both ends.
3、穿墙通风管（07FK02-48）
It should be welded with a steel plate after 2-3mm.
Note: The casing can be 10cm out of the wall, and it can also be flush with the wall as a sealing rib.
The first method: make a sealing rib flush with the wall
The second method: 10cm out of the wall
Three
Civil air defense water supply and drainage reserved
The construction contents include: (1) explosion-proof floor drain, (2) pipeline through the airtight wall, (3) wartime water supply and drainage airtight wall reserved casing.
1. Explosion-proof floor drain
Points to note: information (certificate, inspection report), 5-10mm lower than the living surface of the building, the drainage pipe is galvanized steel pipe, wire jointed.
2. The pipeline is treated through a closed partition wall
The first type: the pipeline passes through the closed partition wall of the protective unit
Valves are added to the protection area
The second type: the pipe passes through the closed partition wall of the protective unit
Valves are added at both ends
The third type: the pipe penetrates the exterior wall
Valves are added to the side of the protection area
3. Reserved casing for water supply and drainage airtight wall during wartime
peacetime
One
electric
It is mainly the casing of the bridge through the unit partition wall, the line pipe through the outer wall or the empty wall to be reserved and embedded.
Two
Water supply and drainage
Pressure drainage, fire fighting, sprinkler main pipe through the unit partition wall and empty wall, exterior wall and other casings reserved for pre-embedding.
Three
airy
At ordinary times, the ventilation duct shall not pass through the civil air defense wall and the unit partition wall. When the air duct enters the airtight partition wall in peacetime, the embedded parts should be buried in the wall according to the regulations, and there must be peacetime and wartime conversion measures (demolition, blocking). Generally, the design of the civil air defense protection unit and the fire prevention unit are overlapped, so the air duct generally does not pass through the civil air defense airtight wall.
Requirements for Reserved Casing GB50134-2004:
Note: The casing and the wing ring are fully welded, the inner and outer sides of the casing are derusted, and the internal test is brushed with anti-rust paint, and after the template is removed, the exposed casing should be protected by anti-rust paint.