The distance between the bridge and the fire water pipe, the construction specification of the bridg

Code for Acceptance of Construction Quality of Building Electrical Engineering (GB50303-2015) has the following provisions: the fire pipe is laid at a position of 50mm below the beam from the outer skin of the pipe.

Ladder frame, tray and slot box installation, when the design does not require, the ladder frame, tray and slot box, that is, the bracket installation should comply with the regulations, and the wiring trough box and the water pipe should be installed above the water pipe when laying up and down on the same side of the water pipe. Cable tray leading from the bottom and from the side. Their height and width should meet the requirements for the minimum bending radius of the cable.

The bend of the tray should meet the minimum bending radius of the cable passing through the bend.

The relevant electrical specifications do not stipulate that the bridge is not allowed to go under the fire hose, and the fifth item of the article in the "Code for Acceptance of Construction Quality of Building Electrical Engineering" GB50303-2002, cable tray.

There are distance requirements for laying under flammable and explosive gas pipelines and thermal pipelines (see figure), and it is not said that it is not allowed, and there is no mention of other water supply and drainage pipes. We also often encounter such problems in engineering, Party A.

Or the supervision has this requirement, in the past when engaged in the installation of industrial equipment, there is no such requirement, but the bridge should not be installed under the normal operation of dripping water or above the thermal pipeline, such as valves. I think their main concern is that when the fire pipe leaks, the water will flow into the bridge and there will be a safety hazard.

Can the fire hose pass over the bridge when it crosses the bridge? Basis, what is the norm? Help, be sure to tell me what the basis is!

The fire hose and the bridge can pass above the bridge when it crosses: if the space is limited, it can be met after the requirements are met. The following conditions must be met when the middle shirt shed is laid above the electrical trunking (bridge collapse) (limited to crossing):

The trunking epithelium and the outer skin of the pipe insulation ensure the effective operating distance, that is, the safety spacing of the trunking width within 400mm is 250mm, the safety spacing within 600mm is 320mm, and the safety spacing of 800 1000mm is 450mm. Fire hydrant pipes, fire sprinkler pipes and cable trays are cross-installed with each other: in construction, there are pressure pipes to let non-pressure pipes, and small pipes to large pipes.

Fire hydrants and sprinkler pipes are all pressure pipes, and they are sold for fire protection, so it is good to solve them within the company. When the cable tray and the fire pipe cross, in principle, the cable is avoided. If it is a cross between water supply and fire fighting, it is generally who does it first, and the one who does it later avoids doing it first.

Hello, glad to answer for you. 1. The installation position and elevation of the fire pipe bracket should be strictly installed in the bracket installation diagram for pay-off. 2. The punching depth of the bracket expansion bolt is 130mm, and a special drill bit must be used to reaming the lifting limb to ensure that the expansion bolt is completely expanded.

The expansion bolt of the bracket is closed by the rear cut bottom expansion bolt, all of which are double nuts and flat pads. A 5mm rubber pad must be added between the bracket and the wall, and between the U-shaped card and the pipe to prevent the corrosion of stray current. 4. In order to facilitate the rapid maintenance of fire pipelines, it is recommended to set up a quick-release anti-swelling limiter every 25m, and the maximum distance shall not exceed 50 meters.

5. When the ductile iron pipe is installed, the wire hose at the deformed place shall not bear any thrust or tension.

If space is limited, it is possible when the requirements are met.

The following conditions (limited to crossing) must be met when it must be laid above the electrical trunking (bridge): the trunking epithelial and the outer skin of the pipe insulation are guaranteed to ensure the effective operating distance, that is, the safety spacing within the width of the trunking is 250mm, the safety spacing within 600mm is 320mm, and the safety spacing of 800 1000mm is 450mm.

Fire hydrant Sakura talk about the model.

pipes, sprinkler pipes and cable trays.

Cross-installation: In construction, there is a pressure pipe to let the non-pressure pipe, and the small pipe to the large pipe. Fire hydrant.

And the sprinkler pipe is a pressure pipe, and the ridge is fire-fighting, so it is good to solve it within the company. When the cable tray and the fire pipe cross, in principle, the cable is avoided. If it is a cross between water supply and fire fighting, it is generally the first to do it, and the last to do it is to avoid it first.

Can the bridge be laid under the fire hose in the construction project? Please present relevant professional information! Thank you! High score bounty!

A: No, you cannot. The relevant electrical specifications do not stipulate that the bridge is not allowed to go under the fire water pipe, and the fifth item of the article in the "Code for Acceptance of the Absolute Poor Quality of the Construction State of Building Electrical Engineering" GB50303-2002, the cable tray is laid under the flammable and explosive gas pipeline and the thermal pipeline There is a distance sail skin requirement (see figure), and it does not say that it is not allowed, nor does it mention other water supply and drainage pipes.

We also often encounter such problems in the project, Party A or the supervisor has this requirement, in the past in the installation of industrial equipment, there is no such requirement, but the bridge should not be installed under the normal operation of dripping water or above the thermal pipeline, such as valves. I think their main consideration is that when the fire pipe leaks, the water will flow into the bridge and there will be a safety hazard.

Hello dear, happy to solve the problem for you, <>

Horizontal installation requirements for bridge and fire hose A: 1 The installation of overhead pipe supports, hangers, anti-sway or fixed brackets should be fixed firmly, and their type, material and construction should meet the design requirements; 2. The designed hanger should be able to bear 5 times the weight of the water-filled pipe at each support point of the pipeline, and the support point of the pipeline system should support the entire fire water supply system; 3. The support point of the pipe support should be located on the structure of the building, and the structure should be able to bear the weight of the water-filled pipe plus at least 114kg of additional loads such as valves, flanges and joints at the suspension point of the pipeline, and the reference weight of the water-filled pipe can be selected according to the table;