A layer of refractory is added to the surface of the fire-proof bridge, which can effectively prevent fire from burning the equipment. It is generally used for cable laying and other protection functions. Do you know the difference between fire bridge and ordinary bridge? Found below.
The fire-proof bridge is used to lay the fire elevator, fire pump, fire elevator and other equipment that need fire protection. Ordinary bridge can be erected independently or on supports such as buildings.
The fire-proof bridge, with frosted surface, is generally used for the distribution line of fire-fighting equipment, including fire control room, fire pump, fire elevator, smoke fan and automatic fire alarm system. In addition to the automatic fire alarm system, other distribution lines can use fire-resistant cables to replace the fire-resistant bridge frame, and can also use ordinary bridges.
The fire-proof bridge has good fire-proof effect and high temperature resistance, and has a wide range of applications. Ordinary galvanized cable tray is generally used in indoor environment, with poor waterproof and anti-corrosion performance.
The fire-proof bridge has a rough feel and its surface is coated with fire-proof paint. The common bridge is composed of supports, hangers, support arms, installation materials and other structures.
The fireproof bridge is sprayed with a layer of fireproof paint on the external surface of the ordinary bridge to achieve the effect of fire prevention and flame retardance. In fact, the bridge itself will never catch fire. The only thing that caught fire was the cable. Fire retardant coating has the characteristics of fire resistance and flame retardancy.
Ordinary Shandong bridge can be laid in buildings independently, or on various buildings (structures) and pipe gallery supports. The installation of the bridge shall follow and reflect the characteristics of simple and clear structure, beautiful and unique appearance, flexible configuration and convenient maintenance. The cable tray and related parts installed outside the building in the open air must be hot-dip galvanized.
The fire resistance time of fire-proof cable tray after cable fire is divided into three grades: > =60 minutes, > =45 minutes and > =30 minutes. The fire resistance time of underground garage shall be > =60 minutes. For the part of the bridge that needs fire protection, fire-resistant or flame-retardant plates and reticulated materials can be added to the tray and ladder to form a closed or semi closed structure.
In addition, the cable tray surface is coated with fire retardant coating in accordance with cecs2490 technical code for application of fire retardant coating for steel structures. Common bridge requirements in the engineering design, the bridge layout shall be determined according to the comprehensive comparison of economic rationality, technical feasibility, operation safety and other factors to fully meet the requirements of construction, installation, maintenance and cable laying.
There are four major differences between fire-proof bridge and ordinary bridge. Content. If you have any requirements, please go to www.sddlqj Cn participates in customization. More types of bridge are waiting for you to choose!