(1) when the cable stayed bridge with large span span enters the building from the outside, the slope outside the bridge shall not be less than 1/100.
(2) the net distance between the Shandong cable tray and the electrical equipment is not less than 0.5m.
(3) when the two sets of cable trays are laid in parallel at the same height, the net distance between them is not less than 0.6m.
(4) in parallel graph drawn on the bridge route, to indicate the starting point and end point bridge, turning point, bifurcation points and lifting the coordinates of the point size, location or elevation, such as drawing laid axonometric drawing, the material will be more accurate statistics.
Straight line: full length, bridge layer, elevation, type and specification. Turning point and branch point: specify the type and specification of the turning connecting plate. Lift: marked elevation changes, also available local drawing or profile said.
(5) the bridge support, such as a column, or non standard, frame spacing, installation methods, specifications, elevation, may agree to that list in the plane, can also be sub mark expressed in different sections, isometric or drawing.
(6) the location of cable down point and the way of lead down; generally speaking, a large number of cables can be drawn down by vertical bending plate and vertical lead frame, a small amount of cables can be used to guide or guide the pipe, indicating the way to be taken down.
(7) the cable bridge should be more than 2.2 meters above the ground, and the top of the bridge should be less than 0.3 meters away from the ceiling or other obstacles. The width of the bridge should not be less than 0.1 meters, and the filling rate of the cross section in the bridge should not exceed 50%.
(8) when the cable is vertically laid in the cable bridge, it should be fixed on the support of the bridge at the upper end of the cable and at 1.5 meters apart. When horizontal laying, it is fixed at the head, tail, turn and the distance of 3~5 meters.
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