[Chai Jin cable tray to recommend the star product - bridge] checking the formula: Q = q1 + q2 using the formula: q1 - Cable uniform load (layers of uniform load in maximum value) (kN / m2), strong electrical fire bridge, uniform load is tray, ladder or cable channel load; q2-- consider cabling or maintenance, the person's weight equivalent uniform load (kN / m2), q2 values computing, Huludao fire bridge, people generally based p = 90kg weight count. Showing concentrated loads and uniform load 2 according to the maximum bending moment bending moment equal conditions as shown in translation: Let pι / 4 = q2ι2 / 8 则 q2 = 2p / ι∵P = 90kg∴q2 = 180 / ι formula: P --1 people load (kg) ι - 1 support points spacing (maximum value if the fulcrum distance ranging) (m) q2--1 human equivalent uniform load (kg / m) based on the preliminary determine the bridge models, specifications and pivot pitch, consult the manufacturer of the sample data, to cross-check the spacing and bridge models, galvanized fire bridge until you meet the load requirement. [Chai Jin cable tray to recommend the star product - large span cable bridge] current bridge is typically assembled by the FRP profiles, suitable for power cables, control cables, lighting cables and accessories. Compared with the iron bridge, has a long life (typically the design life of twenty years), ease of installation and low cost (specific gravity is only 1/4 of steel, construction without flare, fire bridge factory, a single bridge lengths up to 8 meters, or even longer), cutting easy, no maintenance and other advantages. [Chai Jin cable tray to recommend the star product - bridge] bridge fire fire protection zones, you must use steel or non-flammable, fire-retardant materials. I produced a series of cable tray are BJⅢ fire bridge. V. Ground 1, the bridge system should have a reliable electrical connection and ground (only metal tray). 2, while allowing the use of the bridge when the grounding line loop system configuration meets the following requirements. The connection resistance between the ends of the bridge should not exceed 0.00033 ohms, grounding hole should remove the insulation coating. Fire bridge cable bridge quote _ Chai Jin (Online) _ Huludao fire bridge provided by the Tianjin Chai Jin cable bridge Limited. Chai Jin Tianjin Cable Bridge Co., Ltd. (www.tjcjdlqj.com) is Tianjin, metal building materials leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chai Jin leader in cable tray with the staff warmly welcome all inquiries negotiations to create Chai Jin cable tray a better future.