Groove large-span cable tray entering the building from outside, the slope outside should not less than 1/100. When the able tray combined with the equipment, the distance between them cannot be less than 0.5 meter. When both of the two pairs of cable trays parallel laid-up at the same height, the distance between them is not less than 0.6 meter. Drawing the bridge routing on the parallel figure, the location or the location dimension of the bridge starting point and ending point, the turning point, branch point and lifting point must be indicated on the map. If the bridge laying shaft side figure can be drawn on the map, which will be more accurate for the material statistics.
If it is a straight segment, should indicate the whole length, layer of the bridge, elevation and specifications of the cable tray roll forming machine which is different from mental roll forming machine. At the turning point and the branch point should indicate the model and specifications of the turning joint board. And the elevation changes should be indicated on the map, or shows with local details or profile.
The point position under the cable tray or the method point to the below, generally, a large number of vertical turning joint board and the vertical guide with using the cable tray, a small amount of it can use guide plate or tube, indicate the lead way is ok.
If want to install the cable tray smoothly to the metal roll forming machine, it will be higher 2.2 meters than the ground, the distance between the top of the bridge and the ceiling or other obstacles should not be less than 0.3 meters. The width of it can be less than 0.1 meter, and the fill rates of crossing area should under 50%.
When the cable runs in a vertical way in the cable tray, at the top of the cable and intervals of 1.5m should be fixed on the bridge of the stent. If in a parallel direction, fix the cable in the first turn, tail and the intervals of 3~5m.
When installing in drop ceiling, vertical clearance of 80mm should be kept at the slot cover open side, utilization rate of slot section should not be over 50 percent.
The cable should be fixed when laying the line at the vertical and horizontal direction with the cable tray forming machine that is unlike the mental roll form machine. The four couples of cable lines use 24 root for beam or more than 25 couples main cable, fiber and other signal cable should be focus on the type and diameter of cable, cable tie beam some points.
If you want to install the cable tray well with the roll forming machine, you should know the tips about how to install the cable tray discussed above clearly, which is very important of installing and will help you do a good job about it. http://www.broswright.com/