How much is the height of the strong current casing into the building?

In the case of strong electricity into the building casing, then under normal circumstances, it should be reserved at a height of about 30 mm, which may be relatively small.

If you want to reserve a height for the strong electricity into the building casing, you must reserve a height of at least two meters, because if you enter the corridor like this, he must need a large position, so at least two meters must be reserved.

When the height is reserved, it generally needs to be about 50 cm.

Because such a range can facilitate us to use some tools normally.

When the casing on the sixth floor is reserved, the reserved height must be higher than the height of the floor, and the floor height must be suitable for people's residence, about three meters.

Strong on the corridor casing reserved height, about not less than 50 centimeters as well.

For the casing of strong electricity entering the building. In general, we have to see if there is a special strong electric well, and then choose its height according to the strong electric well.

We can still reserve the height of the Jinlou casing, and if we reserve the height, we can bring you a better use and help, now Nanjing.

You are an extreme height reserved by him, and then you must meet his standards and his requirements.

Strong electricity into the building set college to carry out some green flowers how many people are too elevated themselves, when choosing all think that the weight of this choice should still be very much.

The reserved height of the strong current into the building casing should be about two to three years.

How much is the height of the strong current casing into the building? You should ask the installer about this, or look it up on the Internet.

How to reserve the height of the strong electricity into the building casing, how to reserve the professional person, he naturally knows how to reserve, do you at least use a ruler to measure and estimate?

There is a certain reservation height for the strong electricity into the building casing, and it must have regulations.

The reserved height of the strong current casing needs to be solved by consulting professional technicians.

It's better to get the professional people in charge, they want to know what the data is.

How to reserve the casing for strong electricity entering the building? What is the height? You'd better be this, you'd better contact the property in your community, and there is a special electrician in the property who will give you advice.

The height reserved for the strong electricity into the building casing is general, and there are detailed regulations for this, depending on what kind of residential class you have? Or is it commercial?

According to the "Code for Electrical Design of Civil Buildings", when laying cables in and out of the building, "when the cable enters and exits the building, the protective sleeve worn should exceed the water of the building by 200mm, and the nozzle should be blocked by water." ”

The installation height is generally between 300mm and 500mm on the door.

Key points about the electrical installation of civil air defense projects:

For civil air defense projects with imminent blocking entrances and exits, the power supply line of the project shall not enter from the imminent blocking area, and shall enter through the wall, sagging beam or roof embedded protective airtight box or airtight casing.

For the basement where there is no regional power supply that can be connected, the power supply inlet pipe and the installation position of related equipment should be reserved.

The power supply of the power system and the power supply in the area are introduced into the basement, and there should be a manual switching device to ensure the smooth conversion in wartime.

The transformers, circuit breakers, capacitors and other high- and low-voltage electrical equipment installed in the air defense basement should be oil-free and moisture-proof equipment; The generator set of the internal power supply should use diesel generator set, and it is strictly forbidden to use gasoline generator set.

The following projects should be set up in the project diesel power station: central hospital, emergency hospital; The sum of the construction area of the air defense basement such as the ambulance station, the air defense professional team project, the personnel shelter project, and the supporting project is greater than 5000m2 3.

Weak current lines (**, communications, monitoring, security, fire alarms, etc.) can be used in and out of civil air defense projects, but they must be encrypted and closed by dark pipes. When the cable tray passes through the wall and plate with protection and sealing requirements, it should be disconnected in the middle, and the disconnection should be changed to the cable pipe penetration method, and the protective and airtight treatment should be made; should be tried not to make.

3. Use branch cables to cross walls and plates with protection and sealing requirements (it is difficult to be sealed). When the bus duct is used in the project, the closed section of the closed bus duct should be used in the enclosure structure, the free wall, the protective closed partition wall, and the closed partition wall. Due to the small number of bus duct manufacturers and incomplete product specifications (the maximum current is 1600A), it is recommended that the power supply should be used to enter or pass through the civil air defense area.

, installation of cables and wires.

a.When cables and wires pass through the closed wall short pipe, the water and debris in the pipe should be removed. The two ends of the pipe should be filled with airtight materials, and the fillers should be tamped and compacted.

b.When the cable tray passes through the wall and plate with protection and sealing requirements, it should be disconnected, and the cable pipe should be changed to the disconnection place, and the protective sealing treatment should be done, and there should be no joints in the box. c.

For civil air defense projects that combine peacetime and wartime, steel pipes should be used to lay wires. Steel pipes with greater wall thickness should be used for burial in steel bars and concrete wall panels, and galvanized steel pipes should be used in poisoned areas.

d.Fire pumps, smoke exhaust fans, fire dampers and other fire-fighting equipment, emergency lighting wires or cables should be flame-retardant products.

e.Fire linkage control, automatic fire extinguishing control, communication, emergency lighting and emergency broadcasting lines, should be protected by steel pipes, and should be concealed in the non-combustible body structure layer, the thickness of the protective layer should not be less than 30mm, when it must be open, fire protection measures should be taken on the metal pipe, in order to enhance the fire resistance of the pipe, improve the safety. f.

The wartime distribution circuit from the low-voltage distribution room to each protection unit should be independent. When crossing other protection units, there should be protective measures in the crossing protection units. g.

The pre-embedded wartime electrical backup adopts hot-dip galvanized steel pipes with a wall thickness of not less than that.

Generally more than loose water, usually more than the outer scaffolding (generally meters away from the exterior wall). We do it here by 2 meters from the exterior wall.

There is no specific length requirement on the specification.

There are no specific specifications, but during the construction process, if the outdoor hand-controlled well is not far from the outer wall (no more than meters), the casing can be directly reserved enough to enter the well. It depends on the specific situation of the site.

The roof casing generally adopts a rigid waterproof casing, which can be seen in the atlas.

The height of the casing is generally 60cm, including the plate thickness 10 15, the screed layer 10, and the rigid layer 10 20

The drawings are clearly marked, and.

The central location is marked.

If you want to calculate by layer.

That's the rice. It's meters from that baseplate.

The second is rice.

It's meters from that baseplate.

These are the tube center heights.

I want to use the bottom of the pipe.

It is easier to explain to the worker by subtracting the radius of the pipe from the center height, and the explanation is also clear.

1. Water supply and drainage;

1) The length of various casing gas buried in the shear wall should be equal to the thickness of the shear wall, the inside of the casing should be brushed with anticorrosive paint, and the casing should be fixed on the steel bar and grounded.

2. The casing embedded in the kitchen and bathroom, corridor, and roof floor slab should be at the same level as the roof, and the upper height should be 5mm higher than the decorative surface.

3) The lower part of the casing embedded in the hydropower well is flush with the roof, and the upper part is 5mm higher than the finished surface.

4) The two ends of various casings embedded in the rear masonry wall should be 2mm higher than the wall, and the casing should be brushed with anti-rust paint.

5) The embedded water supply pipe can only be concealed after passing the pressure test.

2. Electrical; 1) The lightning protection and grounding device of the foundation raft, the flat steel leaded out, the down line, the test point, the reserved grounding steel plate, the equalizing ring, the anti-side lightning and so on should be concealed after the supervision and acceptance.

2) The embedded PVC line pipe should be a heavy-duty pipe, and the joints of the pipe should be glued and connected by a direct casing. The pipe is laid in the middle of the two layers of steel bars and fixed on the steel bar with tie wire, and the above line pipe should not be bent, and the finished elbow with a large arc should be used.

4) The height of the cross overlap of the line pipe should not be higher than the height of the upper steel bar.

5) The line pipe at the place where the ground is drawn out or the beam plate should be higher than the concrete surface or template by more than 50mm, and the nozzle should be sealed tightly with tape paper.

6) The inside of the metal wire pipe should be anti-corrosion, and the connection should not be welded to the counterpart, and the cross-welding (including the metal wire box) should be done and grounded.

7) The wire box embedded in the concrete should be filled with sawdust or newspaper and then sealed with tape paper, and the wire box should be close to the template and connected with the wire pipe with the lock nut. The wire box embedded in the rear wall should be higher than the wall.

3. Cooperate with civil engineering to do a good job of various reserved holes.

4. After the pre-embedding work of the distribution sub-project is completed, the first self-inspection should be carried out, and various installation and concealment data should be done.

5. It can be concealed only after passing the inspection and supervision.