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Cablebridge
Add time：2015-05-18 Click rate：4532
Cable bridge and cable laying common methods and precautions summary:
(1) cable tray from outside into the building, bridge the outward slope of not less than 1/100.
(2) cable and electric equipment crossing, the spacing of not less than 0.5m.
(3) two groups of cable tray at the same height in parallel, the spacing of not less than 0.6m.
(4) in parallel graph draw bridge routing, to indicate the bridge starting point, terminal and the turning points, branch points and lifting point coordinates or location size, elevation, such as drawing bridge laying isometric drawing, material statistics more accurately. Note: straight line segment length, bridge number, elevation, type and specification. Turning point and branch point: the model and specification of the use of the turning plate. Note: lifting segment elevation changes, also available local drawing or profile said.
(5) support for the bridge, such as column, branch of the arm or non - standard, frame spacing, installation mode, size, elevation, agreed to in the plane on the list of instructions, can also be segmented marked by different profile, single line diagram, or large sample map.
(6) cable leading position and lead the way, generally speaking, under the guidance of a large number of cables available vertical bending connecting plate and vertical cited shelves, under the guidance of a number of cables are available guide or lead pipe marked mode can be cited.
(7) cable tray should be higher than the ground 2.2 meters, the bridge on the top from a ceiling or other obstacles should not be less than 0.3 meters, the bridge width of not less than 0.1 meters, bridge in the cross section of the filling ratio should not exceed 50%.
(8) in the cable tray cable when the laying of the vertical and in the upper end of the cable and at intervals of 1.5 meter should be fixed on the tray bracket, horizontal laying, cable head and tail, turning and at intervals of 3 to 5 meters at fixed.
(9) arranged on the ceiling, open the tank cover surface should be 80 mm (vertical clearance, slot section utilization ratio should not exceed 50%.
(10) laying cable online slot can not binding, groove cable should be straight, the groove of the cable should be straight, as far as possible not to cross the cable should not overflow trough, in cable and wire grooves, corner should be binding. Every 1.5 meters should be fixed on the cable bracket cable on vertical line slot cloth.
(11) the laying of lines in horizontal, vertical and vertical line bridge slot, with cable lashing. 4 on the line cable to 24 for beam, of 25 or more trunk line cable, fiber optic cable and other signal cable should be according to the type of cable, cable diameter, the cable core number splitting binding. Banding spacing should not be more than 1.5 meters, buckle spacing should be uniform, moderate elastic.
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