(1) when the slot type large span cable bridge enters the building outside the building, the overhead of the bridge shall not be less than 1/100.

　　(2)電纜橋架與用電設(shè)備交越時(shí),其間的凈距不小于0.5m。

　　(2) when the cable bridge is crossed with the electric equipment, the net distance between the cable bridge and the electric equipment is not less than 0.5m.

　　(3)兩組電纜橋架在同一高度平行敷設(shè)時(shí),其間凈距不小于0.6m。(4)在平行圖上繪出橋架的路由,要注明橋架起點(diǎn)、終點(diǎn)、拐彎點(diǎn)、分支點(diǎn)及升降點(diǎn)的坐標(biāo)或定位尺寸、標(biāo)高,如能繪制橋架敷設(shè)軸側(cè)圖,則對(duì)材料統(tǒng)計(jì)將更精確。

　　(3) the net distance between the two groups of cable bridges at the same height is not less than 0.6m. (4) draw the bridge's routing on parallel graph. We should specify the coordinates, location size and elevation of bridge's starting point, terminal point, turning point, branch point and lifting point. If we can draw the axle side diagram of the bridge, the material statistics will be more accurate.

　　直線段：注明全長(zhǎng)、橋架層數(shù)、標(biāo)高、型號(hào)及規(guī)格。拐彎點(diǎn)和分支點(diǎn):注明所用轉(zhuǎn)彎接板的型號(hào)及規(guī)格。

　　Straight line: full length, number of bridge frames, elevation, model and specification. Turning point and branch point: indicate the type and specification of the turning plate used.

　　(5)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(lái)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(wú)其它管架借用,則需自設(shè)立(支)柱。

　　(5) determine the direction: according to the layout plan of the building, combined with the settings of the air conditioning pipeline and electrical pipeline, convenient maintenance, and the density of the cable routing, we will determine the best routing of the cable bridge. In the indoor area, it is possible to erect walls, columns, beams and floors as far as possible, so that when the utility tunnel is erected, it should be erected parallel to one side or the top side of the pipeline. The crossing line and branch line should be considered as far as possible to avoid crossing. If there is no other pipe rack to borrow, it is necessary to set up a self supporting column.

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

　　(6) load calculation: calculate the cable weight per unit length on the longitudinal section of the main trunk line of the cable bridge.

　　(7)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(lái)確定電纜橋架的型號(hào)、規(guī)格, 托臂的長(zhǎng)度,支 柱的長(zhǎng)度、間距,橋架的寬度和層數(shù)。

　　(7) 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.

　　(8)確定安裝方式：根據(jù)場(chǎng)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。

　　(8) determine the way of installation: according to the setting conditions of the location, determine the fixed way of the bridge, choose suspended, vertical, side wall or mixed type, connecting piece and fastener are generally supplied, and select the corresponding cover according to the structure of the bridge.

　　(9)繪出電纜橋架平、剖面圖,局部部位還應(yīng)繪出空間圖,開(kāi)列材料表。

　　(9) draw the flat, section map of the cable bridge, and the local part should draw the space map and list the material table.

　　(10)電纜橋架內(nèi)纜線垂直敷設(shè)時(shí),在纜線的上端和每間隔1.5米處應(yīng)固定在橋架的支架上,水平敷設(shè)時(shí), 在纜線的首、尾、轉(zhuǎn)彎及每間隔3~5米處進(jìn)行固定。

　　(10) when the cable is vertically laid in the cable bridge, it should be fixed on the support of the bridge on the top end of the cable and 1.5 meters away from each interval. When it is horizontally laid, it will be fixed at the beginning, the tail, the turning and the 3~5 meters away.

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