What is the difference between the definition of fire bridge and non fire bridge?

The fire bridge generally refers to the fire bridge laid in the fire prevention area, non-smoking area or fire line, commonly known as the fire bridge, and the non-fire bridge refers to the galvanized bridge laid in the ordinary area, that is, there is no clear fire retardant requirements.

Main Differences Between Fire Tray and Non-Fire Bridge:

Difference 1: Because the surface of the fire bridge is sprayed with a layer of fireproof electrostatic powder, the surface of the bridge looks like a layer of granular film, and it feels frosted to the touch, and the color is generally an electric box.

Gray, of course, the color of the surface of the fire bridge can also be customized. The non-fire bridge is generally galvanized bridge, and the surface color is generally silvery-white, if it is galvanized sheet.

The bridge has some snowflakes on the surface and some without snowflakes, which is the difference between the two colors.

Difference 2: According to the relevant bridge standards, strong current cables and weak current cables cannot be laid in the same bridge. Therefore, the cables laid in the strong current fire bridge are generally 220 volts or 380 volts of strong electric power cables, and the cables in the weak current fire bridge are generally low-voltage fire signal cables.

This is the difference between a strong current fire bridge and a weak current fire bridge. The difference between a strong current non-fire bridge and a weak current non-fire bridge is the same.

Difference 3: The indoor fire bridge is generally more expensive than the indoor non-fire bridge, and the outdoor non-fire bridge is more expensive than the indoor fire bridge, which is the difference between the two. There is generally no outdoor fire bridge, because the fire bridge is mainly fire retardant.

The lines of the two are different, because the fire protection stipulates that the weak and strong telecommunication lines must be separated, and they must also be separated from the ordinary power supply system, so both will be bridged separately.

Answer: The electric fire bridge is mainly composed of glass fiber reinforced materials, inorganic adhesive composite fireproof board and metal skeleton composite and other fireproof substrates. The outer layer is equipped with fireproof coating, which will not burn after fire, prevent the spread of fire, and has an extremely good fireproof and fireproof effect.

The difference between electric fire bridge and non-fire bridge is from three aspects: structure, requirements and function.

First, the difference between the two from the perspective of structure:

The electric fire bridge is mainly composed of glass fiber reinforced materials, fireproof boards and metal skeletons with inorganic adhesives, and other fireproof substrates. The outer layer is equipped with fireproof coating, which will not burn after fire, prevent the spread of fire, and has an extremely good fireproof and fireproof effect.

Ordinary cable tray is divided into trough type, tray type, ladder type, grid type and other structures, which are composed of brackets, brackets and installation accessories.

Second, the difference from the requirements:

The requirement of electric fire fighting fire bridge is to require the fire resistance time to be greater than 1h in the underground garage. The section that requires the bridge to be fireproof, can be added to the tray and ladder frame with fire-resistant or flame-retardant plates, net materials to form a closed or semi-enclosed structure, and the surface of the bridge is painted with a fireproof coating that conforms to the CECS2490 "Technical Specification for the Application of Fireproof Coatings for Steel Structures", and the requirements of the ordinary bridge are that in the engineering design, the layout of the bridge should be determined according to the comprehensive comparison of factors such as economic rationality, technical feasibility, and operational safety, and also fully meet the requirements of construction and installation, maintenance and overhaul and cable laying.

Third, from the role of the difference:

The function of the electric fire fire bridge: the surface of the fire bridge is sprayed with a layer of fireproof paint, which plays the role of fire retardant.

The role of ordinary bridge: it can be attached to various buildings (structures) and pipe gallery supports, flexible configuration and convenient maintenance, all parts need to be galvanized, and installed in the open air bridge outside the building.

Question: Can the cable from the generator be put into the non-fire bridge?

Ask whether the cable coming out of the generator is a fire-fighting cable or a non-fire-fighting cable.

Question: Are you mistaken, the generator is started when the municipal power outage is started, it should belong to the fire cable, please help me re-check the specification to determine, thank you.

Thank you for your question. Answer the fire tray, generally used in the fire equipment distribution line, including fire control room, fire pump, fire elevator, smoke exhaust fan and automatic fire alarm system, in addition to the automatic fire alarm system other distribution lines can use fire-resistant cables, without the use of fire bridge.

The fireproof bridge is required to be more than 1h in the underground garage. In the section where the bridge is required to be fireproof, fire-resistant or flame-retardant board or mesh materials can be added to the tray and ladder frame to form a closed or semi-closed structure, and the surface of the bridge can be painted in accordance with CECS 24.

90 "Technical Specifications for the Application of Fire Retardant Coatings for Steel Structures" of the fire retardant coating, its overall fire resistance should meet the requirements of relevant national norms and standards.

The fireproof tray installed on the fire line is generally called the fire tray. The fire bridge requires excellent sealing and fire retardant characteristics, good sealing performance to ensure that the fire line cable transmission signal is smooth, so that there will be no signal loss or noise, and the strong fire and flame retardant characteristics can ensure that after the external environment, the external fire can not ignite the bridge. Non-fire bridge is generally called ordinary bridge, ordinary bridge generally refers to indoor and outdoor galvanized bridge, the main difference between fire bridge and non-fire bridge is reflected in the surface protection.

There is still a lot of knowledge content in the use of fire bridge in actual projects.

1. What is a fire bridge?

The fire cable tray is a galvanized cable tray that is laid on the fire line to protect the surface of the fire cable and sprayed with fireproof electrostatic powder.

The fire bridge is a kind of fire bridge, which is divided into metal fire bridge and non-metal fire bridge. The material of the metal fire chamber answering bridge is generally galvanized sheet.

The material of the non-metallic fire bridge is a polymer fireproof material. According to the structure type, the fire bridge is divided into trough fire bridge, pallet fire bridge and ladder fire bridge. According to the variety style, the fire bridge is divided into fire through bridge, fire horizontal bend bridge, fire level three-way bridge, fire level four-way bridge, etc.

2. The difference between fire bridge and non-fire bridge.

Difference 1: The fire bridge is a fireproof and flame-retardant board.

There is also a zinc layer on the surface, and the ordinary non-fire bridge is not fireproof, but it can resist corrosion and not rust.

Difference 2: The fire bridge is generally a pallet structure, and the ordinary non-fire bridge can also be a ladder and grid structure.

Difference 3: The color of the fire bridge is generally gray, and the color of the non-fire bridge is generally silver-white.

Difference 4: Fire trays are generally installed in fire lines, and non-fire trays can be installed in any cable line.

The difference between ordinary bridge, fireproof bridge and rainproof bridge is that ordinary bridge does not have the function of rainproof, moisture-proof and fireproof, the surface of the fireproof bridge has a layer of fireproof coating, which has a certain fireproof effect, and the rainproof bridge is generally sealed, and the surface is covered with rainwater and cannot enter, which will not affect the line.

Ordinary quarrels, firewalls are in the rain gutter, of course, this is different, because their effect is different, so the role they play, this should also be different.

It's not the same concept. The fireproof bridge can be closed or not, and the airtight fireproof bridge must be closed and sealed.

The fire bridge is a fully enclosed bridge, the thickness of the steel plate of the bridge armor material is not less than 2mm, and the bridge in the store can be a trapezoidal bridge or a closed trunking, but the bridge cover is not the same as the fire bridge cover, without a fireproof sealing seal.

In fact, the bridge itself will not catch fire, the fire can only be the cable, the fireproof paint plays the principle of fire retardant and flame retardant outer layer plus fireproof coating, the fire bridge will not burn after the fire, so as to prevent the spread of fire, has an extremely good fire and fire resistance effect, and has fire resistance, oil resistance, corrosion resistance, non-toxic, non-pollution and other properties. Fire-retardant coatings have the characteristics of thin coating, high fire resistance limit and strong adhesion.

The use environment of the fire-fighting bridge is different from that of the ordinary bridge: 1Fire and fire protection bridge use environment:

In the project, the fire engineering part will have fire protection requirements for fire protection equipment distribution lines, etc., and the fire bridge has this fire performance, and there is a layer of frost fire retardant paint on the surface, which has the effect of fire prevention, heat insulation and flame retardant. 2.Ordinary bridge use environment:

Steel galvanized cable tray is mainly used for installation in indoor dry environment, galvanized is also known as "electro-galvanized cold galvanized" its anti-corrosion effect is a little worse than that of other materials of bridge, but the use of ordinary steel galvanized cable tray in indoor dry environment installation, is enough to meet the requirements of anti-corrosion, galvanized bridge after all low cost.

The requirements of the fire protection bridge are different from those of the ordinary bridge: 1. The requirements of the fire protection bridge: the fire resistance time of the fire bridge of the underground garage is required to be greater than 1 hour, and the fire performance of the fire bridge should be in line with CECS24 for the section with fire protection requirements

90 "Technical Specifications for the Use of Fire Retardant Coatings for Steel Structures".