(1)確定方向：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、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(nèi),盡可能沿建筑物的墻、柱、梁及樓板架設(shè),如許利用綜合管廊架設(shè)時(shí),則應(yīng)在管道一側(cè)或上方平行架設(shè),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(shè)立(支)柱。

(1) determine the direction: according to the layout of building with air conditioning pipeline and electrical pipelines, and other settings, convenient maintenance, and cable routing density to determine the optimal routing of cable tray. Indoors as much as possible along the building walls, columns, beams and floor set up, such as the comprehensive pipe gallery installation, pipeline side or above in parallel erection, and consider the lead line and branch line as far as possible to avoid cross, if no other pipe rack borrowing, is required since the establishment of the (a) column.

(2)荷載計(jì)算：計(jì)算電纜橋架主干線縱斷面上單位長度的電纜重量。

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

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

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

(4)確定安裝方式：根據(jù)場所的設(shè)置條件確定橋架的固定方式,選擇懸吊式、直立式、側(cè)壁式或是混合式,連接件和緊固件一般是配套供應(yīng)的,此外,根據(jù)橋架結(jié)構(gòu)選折相應(yīng)的蓋板。