电气安装密闭金属线槽,施工队伍现场制作弯头、三通、四通、变径等部件,如何给工程量啊?
推荐回答(4个)
电气安装施工程序和方法提要:金属线槽(盒)及支架接地(接零)支线敷设,连接紧密、牢固,接地(接零)线截面选用正确,线路走向合理,需防腐的部分涂漆应均匀无遗漏 更多精品源自试题 电气安装施工程序和方法 工艺流程:天棚隐蔽独立吊装墙面、地面凿槽暗埋管路穿线电路测试电气器具安装工作 天棚隐蔽独立吊装:根据设计图管线走向,在天棚上弹线,找点,用固定好的膨胀螺栓将钢筋及30×2的角铁小块焊接成独立吊杆用管卡固定,符合设计要求的PVC阻燃管及配件。线管的吊装必须牢固,并应独立吊装,不能与轻钢龙骨等其它吊件合吊在同一根吊筋上。 墙面、地面凿槽暗埋:根据设计图管线走向,在墙、地面凿槽暗埋PVC管用管卡固定。暗埋管最小弯曲半径大于或等于管外径的6倍。 预埋线盒(或箱体)设置正确,固定可靠,管子进入盒(箱)处顺直,盒(箱)可露出长度5mm,用入盒锁扣和接头牢牢锁紧。 管路穿线电路测试:管路布置完成并固定后,根据设计图纸上选择的导线,分颜色(双色线作接地保护线,蓝色线作零线,其它颜色线作相接)进行布线。 用16#钢丝作索引线,将钢丝穿入管中,钩住导线,拉入PVC管中。线管必须连接紧密,管口光滑,护口齐备,导线在盒(箱)内有适当余量;导线在管内无接头且排列整齐,不进入盒(箱)的垂直管子的上口穿线后密封处理良好;导线连接牢固,用压线帽、压线钳压紧,使其连接牢固,包扎严密,绝缘良好,不伤芯线。 穿线完成后,必须进行决缘摇测,导线间和导线对地间的绝缘电阻值必须大于0.5MΩ。 金属线槽(盒)及支架接地(接零)支线敷设,连接紧密、牢固,接地(接零)线截面选用正确,线路走向合理,需防腐的部分涂漆应均匀无遗漏,色标准确,涂刷后不污染设备和建筑物。 电气器具安装工作:器具及其支架牢固端正,位置正确,有木台的安装在木台的中心;器具表面应清洁,灯具内外应干净明亮,吊杆垂直,双链平行。 暗插座、暗开关的盖板紧贴地面,四周无缝隙;灯具及其控制开关工作正常。 配电箱位置正确,部件齐全,箱体开孔合适。切口整齐,且箱体内外清洁,箱盖开闭灵活,箱内接线整齐,回路编号齐全正确,管子与箱体连接有专用锁扣紧锁。暗式配电箱盖应紧贴墙面;零线经汇流排(零线端子)连接,无绞接现象;箱体应油漆完整,喷塑良好。 导线与器具连接应牢固紧密,不伤线芯。压板连接时,压紧无松动;螺栓连接时,在同一端子上导线不大于两层;防松垫圈等配件齐全;导线进器具的绝缘保护良好,在器具盒(箱)内的余量适当。吊链灯的引下线整齐完善。 开关切断相线,螺口灯头相线连接在中心触点的端子上,同样用途的三相插座接线,相序排列一致;单相插座的接线,面对插座,右极接相线,左极接零线;单相三孔,三相四孔插座的接地(接零)线拉在正上方;插座的接地(接零)线单独敷设,不与工作零线混同。照明器具及配电箱(盘)的接地(接零)支线敷设,必须连接紧密、牢固,接地(接零)线截面选用正确,需防腐的部分涂漆应均匀无遗漏,其线路走向合理,色标准确,涂刷后不污染设备和建筑物。
在实际操作中,可以考虑按制作部件长度的三倍计算桥架安装人工费,要么甲供材料时就向厂家定做部件
北京的安装算量中,线槽的现场制作弯头,三通,四通,变径等部件是不用单独计算的
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