Stainless steel cable tray is known as a weak current system of intelligent building. It usually has multiple information monitoring and communication facilities, which can be placed inside the building independently or attached to the electrical frame. There are three kinds of cable trays, namely trough cable tray, tray cable tray and cascade cable tray. Its selection shall be determined according to the type and quantity of cable display of each weak current system.
1、 Bridge width: determine the model and specification of cable bridge, bracket length, strut length, spacing, bridge width and layers according to the number of cables laid, cable diameter and cable spacing.
2、 Installation method: determine the appropriate bridge installation method according to the setting conditions of the site, such as suspension type, vertical type, side wall type or hybrid type. The bridge connectors and fasteners are generally supplied together, and the corresponding cover plate is selected according to the bridge structure.
3、 Erection direction: determine the z-best route of cable tray according to the building layout plan, combined with the setting of air conditioning pipeline and electrical pipeline, as well as the density of cable route. Indoors, it shall be erected along the walls, columns, beams and floors of the building as far as possible.
4、 Construction drawings: plan and section drawings of cable tray shall be drawn in advance, and space drawings and material lists shall be drawn for local parts.
5、 Load calculation: calculate the cable weight per unit length on the longitudinal section of the main line of the cable bridge in advance.
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