[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 of maximum value) (kN / m2), is uniformly distributed load tray, ladder or cable tray load; q2-- consider cable laying or maintenance, the person's weight equivalent uniform load (kN / m2) Cascade cable bridge, calculate the value of q2 people generally based on the weight of p = 90kg dollars. Said the concentrated load and uniform load bending moment 2 by Maximum bending moment equal conditions shown in translation: Let pι / 4 = q2ι2 / 8 则 q2 = 2p / ι∵P = 90kg∴q2 = 180 / ι where: P --1 people load (kg) ι - 1 support points spacing (maximum value if the fulcrum distance range) (m) q2--1 human equivalent uniform load (kg / m) based on the preliminary determine the bridge models, specifications and fulcrum distance, consult the manufacturer of the sample data, cross-checking and tray type cable tray spacing standard until meet the load requirement. [Chai Jin cable tray to recommend the star product - Bridge] If the different levels of cable laying in the trough cable tray, the middle partition should be increased when the same cable tray isolation. 1.8 When the steel line segment length exceeds 30m, while aluminum cable bridge over 15m. Or when the cable tray after construction should stretch (settlement) seam allowance leaving O-30mm compensation. Its retractable connector plate connection should be used. 1.9 cable ladder, tray width and height should be chosen to meet the requirements of the filling factor of the cable under the ladder, filling ratio generally within the tray, power cable desirable 40% -50% of cable tray, control cables desirable 50% . 70%. L0% and should be reserved for a 252 project development margin. 1.10 In selecting cable tray load rating if the actual span cable tray hanger is not equal to 2m when. The work uniform load should be met: where qG ---- Work uniform load, kN / m; qE ---- rated uniformly distributed load, kN / m; LG ---- actual span, m. Rated bridge uniform load rating in Table 1. Tray cable tray, Fushun cable tray, cable tray provided by the Tianjin factory Chai Jin Chai Jin cable bridge Limited. Chai Jin Tianjin cable bridge Limited (www.tjcjdlqj.com) strong, credible, in Tianjin metal building materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chai Jin cable tray and you hand into the brilliant, for a better future!