Some friends mentioned the issue of the bridge frame, the amount of the bridge's release, and the spacing of the strong and weak bridges. Today we will come to understand the construction and quotation of Xiaqiaojia.
First of all, the bridge and the trunk are different. Because their shapes are almost the same, the performance is very different, the price of the installation will be the same, and the bridge will definitely be more expensive.
First, the distance between the weak bridge and the strong bridge
Can strong and weak electric bridges be combined?
Strong metal bridges and weak currents should not be combined in the same bridge. The strong and weak bridges need to maintain a certain parallel distance. The linear distance between strong and weak currents must be greater than 300MM. This is a specification that must be observed for weak currents.
However, sometimes for the convenience of the figure or the cost saving, it is often put together, seriously out of specification, and the interference generated by the strong electricity will directly affect the strength of the weak electric signal.
When the cable tray is installed in multiple layers, the control between the weak electric cables is not less than 0.2M, the power cables are not less than 0.3M, the weak electric cables and the power cables are not less than 0.5M, and the shield cover can be reduced to 0.3M, and the upper part of the bridge is from the ceiling or other. The obstacle is not less than 0.3M. Cables with different voltages and different uses should not be laid in the same layer of bridge.
If it is really necessary to lay in the same layer of bridge due to project conditions, a partition must be added in the middle.
Second, the construction price of weak bridge
Regarding the installation price of the bridge, we have been asking friends all the time. We have also published it before. This time we will summarize it for your reference. (It is a general quotation. Actually, it is affected by many factors, maybe Will fluctuate).
Here are the different models and then offer the installation price.
50-80 (width): 12 yuan a meter, (installation height is 4 meters), 18 yuan a meter (installation height is 6 meters).
100-200 (width): 22 yuan a meter (installation height is 4 meters), 25 yuan a meter (installation height is 6 meters).
300 (width): 28 yuan a meter (installation height is 4 meters), 30 yuan a meter (installation height is 6 meters).
400 (width): 32 yuan a meter (installation height is 4 meters), 35 yuan a meter (installation height is 6 meters).
600-800 (width): 35-45 yuan a meter (installation height is 4 meters), 48 yuan a meter (installation height is 6 meters).
900*1000 (width): 50 yuan a meter (installation height and width is 4 meters), 55 yuan a meter (installation height is 6 meters).
This data is for reference, of course, it will vary with the localities, so the price will be different. This one can quote according to the specific situation.
Third, the amount of common bridges
The utilization of common bridges, here are some common ones. Before we understand the utilization of the bridge, we can first understand the core diameter of the Super Category 5 and Category 6 lines.
Category 6 core diameter: 0.574
Section: 30.1754
External square area: 38.44mm2
Super five / five core diameter: 0.511
Section: 19.625
External square area: 25mm2
This is exemplified by the utilization rate of the bridge of 30% and 50%.
Other models only need to be known based on the wire diameter estimation.
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