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，圓鋼或絲桿不得小于 8mm，并應有防晃支架，在分支處或端部 0.3-0.5m 處應有固定支架 ； 3、安裝在地下室等潮濕場所的支架應按要求進行防腐處理；4、橋架支架按要求作倒角處理；橋架支架應在地下室橫向、縱向區 域與消防管道及風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，應在一側預留大于等于 300mm 的空間用 于檢修；驗收節點1、金屬線槽不應作為設備接地導體，當設計無要求時，金屬線槽全 長不少于 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 個防松螺母或防松墊圈的連接固定螺栓； 橋架在變形縫處應安裝伸縮節；槽架蓋在變形縫處獨立安裝（長 300mm）；2、非鍍鋅電纜橋架間連接板的兩端跨接銅芯導線或編織銅線小截 面積不小于 4mm?；當鋼制電纜橋架直線長度超過 30m，鋁合金電纜橋 架超過 15m 時，或當電纜橋架經過建筑伸縮（沉降）縫時應留有20~30mm 補償余量，其連接宜采用伸縮連接板；驗收節點

　　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、金屬電管應與電纜橋架進行可靠的跨接接地；地下室風管距離墻柱宜為 0.8-1.0m 便于橋架翻越風管；2、橋架與風管交叉時，應從風管上方翻越；橋架與水管交叉時應從 水管上方翻越；嚴禁橋架從防火卷簾上方穿越；強弱電橋架間距應不 小于 0.3m；橋架與水管同行安裝其間距應不小于 0.3m；3、橋架支架通長扁鋼敷設確保橋架支架、橋架接地可靠；橋架支架 與橋架采用軟線聯結驗收節點

　　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、橋架安裝前根據管線深化確定的標高，應在混凝土及磚墻上預留橋架孔洞（預留洞尺寸：橋架長+50mm，橋架寬+50mm）2、地下室強弱電橋架穿越相鄰防火分區，依據建筑防火規范，需對 橋架穿墻洞口處進行防火封堵；

　　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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