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.

一、橋架寬度：根據(jù)布放電纜條數(shù)、電纜直徑及電纜間距來確定電纜橋架的型號、規(guī)格,托臂長度,支柱長度、間距,橋架寬度和層數(shù)。

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.

二、安裝方式：根據(jù)場所的設(shè)置條件來確定合適的橋架安裝方式,如懸吊式、直立式、側(cè)壁式或是混合式,橋架連接件和緊固件一般是配套供應(yīng)的,根據(jù)橋架結(jié)構(gòu)選擇相應(yīng)的蓋板。

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.

三、架設(shè)方向：根據(jù)建筑平面布置圖,結(jié)合空調(diào)管線和電氣管線等設(shè)置情況，以及電纜路由的疏密來確定電纜橋架的Z佳路由。在室內(nèi),盡可能沿建筑物的墻、柱、梁及樓板架設(shè)。

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.

四、施工圖紙：應(yīng)事先繪出電纜橋架平、剖面圖,局部部位還應(yīng)繪出空間圖,開列材料表。

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.

五、荷載計算：事先計算電纜橋架主干線縱斷面上單位長度的電纜重量。

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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