一、施工工藝流程1、梯架、托盤和槽盒全長不大于30m時，不應少于2處與保護導體可靠連接；全長大于30m時，應每隔20m~30m應增加一個連接點，起始端和終點端均應可靠接地。2、直線段鋼制電纜橋架長度超過30米、鋁合金或者玻璃鋼制電纜橋架長度超過15米設有伸縮節。3、橋架穿越墻體及樓板，應用不燃材料封堵；穿越防火分區橋架內建議做防火封堵。4、室外安裝橋架安裝高度不能低于積雪、積水高度，同時考慮選用防水型蓋板，進出室外橋架、線槽，室內須高于室外，防止雨水流入室內。5、電纜出入電纜溝、電氣豎井、建筑物，配電（控制）柜、臺、箱處以及管子管口處等部位應采取防火或密封措施。二、項目特征①材質、類型：鋼制槽式橋架；②規格及型號：200*100；③ 施工內容：組對、焊接或螺栓固定、彎頭、三通或四通、蓋板、隔板、附件安裝等其它完成該項目全部內容。

　　1、 When the total length of the ladder frame, pallet, and trough box is not more than 30m, there should be no less than 2 reliable connections with the protective conductor; When the total length is greater than 30m, a connection point should be added every 20m~30m, and both the starting and ending ends should be reliably grounded. 2. Expansion joints are installed for steel cable trays with a length exceeding 30 meters in straight sections and for aluminum alloy or fiberglass cable trays with a length exceeding 15 meters. 3. Bridge passing through walls and floors should be sealed with non combustible materials; Fire sealing must be done inside the bridge frame passing through the fire compartment. 4. The installation height of outdoor cable trays should not be lower than the height of snow and accumulated water. At the same time, waterproof cover plates should be considered. For outdoor cable trays and trunking, the indoor height should be higher than the outdoor height to prevent rainwater from flowing into the indoor area. 5. Fire prevention or sealing measures should be taken for cable entry and exit in cable trenches, electrical shafts, buildings, distribution (control) cabinets, platforms, boxes, and pipe openings. 2、 Project features ① Material and type: Steel trough bridge frame; ② Specification and model: 200 * 100; ③ Construction content: assembly, welding or bolt fixing, elbows, tees or tees, cover plates, partitions, accessory installation, and other completion of the entire project.

　　三、單價組價分析

　　3、 Unit price group price analysis

　　1、直接費

　　1. Direct cost

　　①人工費 ：26.6元/m；

　　① Labor cost: 26.6 yuan/m;

　　② 材料費：45.6元/m(含項目特征中所有材料)；

　　② Material cost: 45.6 yuan/m (including all materials in the project characteristics);

　　③機械及其它費：0.97元/m；

　　③ Mechanical and other expenses: 0.97 yuan/m;

　　直接費小計：73.17元/m。

　　Subtotal of direct expenses: 73.17 yuan/m.

　　2、管理費按直接費的6%：4.39元/m。

　　2. The management fee is 6% of the direct fee: 4.39 yuan/m.

　　3、利潤按直接費的5%：3.66元/m。

　　3. Profit is calculated at 5% of direct expenses: 3.66 yuan/m.

　　4、稅費按直接費、管理費、利潤和的3%：2.44元/m。

　　4. Taxes and fees are calculated at a rate of 3% of direct fees, management fees, and profits: 2.44 yuan/m.

　　5、全費用成本單價約：83.66元/m。

　　5. The total cost unit price is approximately 83.66 yuan/m.

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