Install the cable tray when the details of the calculation:

　　(1)荷載計算：計算電纜橋架主干線縱斷面上單位長度的電纜重量。

　　(1): load calculation calculation of cable weight per unit length of cable tray on longitudinal section of trunk line.

　　(2)確定橋架的寬度：根據布放電纜條數、電纜直徑及電纜的間距來確定電纜橋架的型號、規格，托臂的長度，支柱的長度、間距、橋架的寬度和層數。

　　(2) to determine the width of the bridge cable laying: according to the number and diameter of the cable and cable spacing to determine the type and size of the cable tray, arm length, strut length, spacing, bridge width and number.

　　(3)確定安裝方式：根據場所的設置條件確定電纜橋架的固定方式，選擇懸吊式、直立式、側壁式或是混合式，連接件和緊固件一般是配套供應的，此外，根據橋架結構選折相應的蓋板。

　　(3) installation: according to determine the place conditions fixed, cable tray suspensory, upright, side wall or mixed type, connectors and fasteners are generally supporting the supply, in addition, according to the bridge structure, choose the corresponding cover.

　　(4)確定方向：根據建筑平面布置圖，結合空調管線和電氣管線等設置情況、方便維修，以及電纜路由的疏密來確定電纜橋架的佳路由。在室內，盡可能沿建筑物的墻、柱、梁及樓板架設，如許利用綜合管廊架設時，則應在管道一側或上方平行架設，并考慮引下線和分支線盡量避免交叉，如無其它管架借用，則需自設立(支)柱。

　　(4) determine the direction: according to the building layout, combined with the air conditioning pipeline pipeline and electrical installation, convenient maintenance, and the density of cable routing to determine the optimum routing of cable bridge. In the room, as far as possible along the walls of the building, columns, beams and floor erection, so the comprehensive utilization of pipe rack erection, should be set up in parallel side or above the pipeline, and consider the lead line and a branch line to avoid cross, such as no other pipe frame borrowing, is required since the establishment (Branch) column.

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