1、水平安裝的橋架支架間距宜為 1.5m，垂直安裝的橋架支架間距不應(yīng)大于2m；

　　1. The spacing between horizontally installed bridge supports should be 1.5m, and the spacing between vertically installed bridge supports should not exceed 2m;

　　2、采用金屬吊架固定時(shí)，圓鋼或絲桿不得小于 8mm，并應(yīng)有防晃支架，在分支處或端部 0.3-0.5m 處應(yīng)有固定支架 ； 3、安裝在地下室等潮濕場(chǎng)所的支架應(yīng)按要求進(jìn)行防腐處理；4、橋架支架按要求作倒角處理；橋架支架應(yīng)在地下室橫向、縱向區(qū) 域與消防管道及風(fēng)管支架一條線布置確保美觀、整齊；5、橋架在走廊通道安裝時(shí)，應(yīng)在一側(cè)預(yù)留大于等于 300mm 的空間用 于檢修；驗(yàn)收節(jié)點(diǎn)1、金屬線槽不應(yīng)作為設(shè)備接地導(dǎo)體，當(dāng)設(shè)計(jì)無要求時(shí)，金屬線槽全 長(zhǎng)不少于 2 處與 PE 線連接，鍍鋅線槽間的連接板的兩端不跨接接地 線，但連接板兩端不少于 2 個(gè)防松螺母或防松墊圈的連接固定螺栓； 橋架在變形縫處應(yīng)安裝伸縮節(jié)；槽架蓋在變形縫處獨(dú)立安裝（長(zhǎng) 300mm）；2、非鍍鋅電纜橋架間連接板的兩端跨接銅芯導(dǎo)線或編織銅線小截 面積不小于 4mm?；當(dāng)鋼制電纜橋架直線長(zhǎng)度超過 30m，鋁合金電纜橋 架超過 15m 時(shí)，或當(dāng)電纜橋架經(jīng)過建筑伸縮（沉降）縫時(shí)應(yīng)留有20~30mm 補(bǔ)償余量，其連接宜采用伸縮連接板；驗(yàn)收節(jié)點(diǎn)

　　2. When using metal hangers for fixation, round steel or threaded rods should not be less than 8mm and should have anti sway brackets. Fixed brackets should be provided at the branch or end 0.3-0.5m away; 3. Supports installed in damp places such as basements should undergo anti-corrosion treatment as required; 4. The bridge bracket shall be chamfered as required; The bridge bracket should be arranged in the horizontal and vertical areas of the basement along the same line as the fire and air duct brackets to ensure aesthetics and neatness; 5. When installing cable trays in corridors, a space of 300mm or more should be reserved on one side for maintenance; Acceptance node 1: Metal trunking should not be used as a grounding conductor for equipment. When there are no design requirements, the total length of the metal trunking should be connected to the PE line at least 2 places. The two ends of the connecting plate between galvanized trunking should not be crossed with grounding wires, but there should be no less than 2 fixing bolts with anti loosening nuts or anti loosening washers at both ends of the connecting plate; Expansion joints should be installed at the deformation joints of the bridge frame; The slot frame cover is installed independently at the deformation joint (300mm long); 2. The minimum cross-sectional area of the copper core wire or braided copper wire that crosses the two ends of the connecting plate between non galvanized cable trays shall not be less than 4mm ?; When the straight length of steel cable trays exceeds 30m, aluminum alloy cable trays exceed 15m, or when cable trays pass through building expansion (settlement) joints, a compensation allowance of 20-30mm should be left, and expansion connection plates should be used for their connections; Acceptance nodes

　　1、金屬電管應(yīng)與電纜橋架進(jìn)行可靠的跨接接地；地下室風(fēng)管距離墻柱宜為 0.8-1.0m 便于橋架翻越風(fēng)管；2、橋架與風(fēng)管交叉時(shí)，應(yīng)從風(fēng)管上方翻越；橋架與水管交叉時(shí)應(yīng)從 水管上方翻越；嚴(yán)禁橋架從防火卷簾上方穿越；強(qiáng)弱電橋架間距應(yīng)不 小于 0.3m；橋架與水管同行安裝其間距應(yīng)不小于 0.3m；3、橋架支架通長(zhǎng)扁鋼敷設(shè)確保橋架支架、橋架接地可靠；橋架支架 與橋架采用軟線聯(lián)結(jié)驗(yàn)收節(jié)點(diǎn)

　　1. Metal conduits should be reliably grounded across cable trays; The distance between the basement air duct and the wall column should be 0.8-1.0m to facilitate the bridge to climb over the air duct; 2. When the bridge intersects with the air duct, it should be flipped over from above the air duct; When the bridge intersects with the water pipe, it should be flipped over from above the water pipe; It is strictly prohibited for cable trays to pass over fire-resistant rolling shutters; The distance between the strong and weak bridge frames should not be less than 0.3m; the distance between the bridge frame and the water pipe when installed together should not be less than 0.3m; 3. The laying of the full-length flat steel of the bridge frame support ensures reliable grounding of the bridge frame support and bridge frame; The bridge bracket and bridge are connected by flexible wires for acceptance nodes

　　1、橋架安裝前根據(jù)管線深化確定的標(biāo)高，應(yīng)在混凝土及磚墻上預(yù)留橋架孔洞（預(yù)留洞尺寸：橋架長(zhǎng)+50mm，橋架寬+50mm）2、地下室強(qiáng)弱電橋架穿越相鄰防火分區(qū)，依據(jù)建筑防火規(guī)范，需對(duì) 橋架穿墻洞口處進(jìn)行防火封堵；

　　1. Before installing the cable tray, according to the elevation determined by the deepening of the pipeline, cable tray holes should be reserved on the concrete and brick walls (reserved hole size: cable tray length+50mm, cable tray width+50mm). 2. When the strong and weak electrical cable tray in the basement passes through adjacent fire compartments, according to the building fire protection regulations, the openings of the cable tray through the wall should be sealed for fire protection;

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