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10秒装修报价 装修要花多少钱?获得精准报价,省钱30%
168211
元
材料费:77201元
人工费:86544元
设计费:1760元
质检费:2706元
①、 检查管道,试压前将整个管道检查一遍,看看所焊接的管件有无漏焊的情况,三通、弯头、法兰有没有固定。②、 安装堵板及排气阀:安装堵板时螺丝要对角紧固,垫片及法兰上要檫拭干净,排气阀要安装在管道的最高点。③、管道试压前应进行充水浸泡,时间不小于12小时。管道充水后应对未回填露点进行检查(包括管道与管道附件联接部位),发现问题及时解决。④、管道试压不包括水锤消除器、消防栓等附件设施,试压时阀门要全部打开,阀们不能代替堵板使用。在打压试验过程中,需将水慢慢注入到管道系统中,同时在打压试验前,需将系统最高位末端放水阀处将空气完全排出。空气必须从管道系统(无论塑料管材或金属管材)中被排出,从而避免在系统打压过程中空气对封闭系统管材造成一定的损害。残存在系统内部的空气会产生额外的波动压力,从而对系统造成破坏,空气以及压缩气体不可以被用于系统压力试验。
(一)钢丝网骨架管安装管材、管件的验收1、 接受管材、管件必须进行验收。验收内容包括:产品合格证、质量保证书、各项性能检验报告、规格数量、包装情况及管材、管件的质量等。2、验收管材、管件时,应在同一批中抽样,并按现行企业标准《钢骨架塑料复合管及管件检验标准》的规定内容进行检查,必要时进行全面测试。(二)存放1、 管材管件应存放在通风良好、温度不超过40℃的库房或简易场地。不允许与火焰及高温物体接触。若存放时间较长则应有遮盖物。2、 管才应水平堆放在平整的支撑物或地面上,堆放高度不宜超过1.5m。ф300以上的管材堆放时,最好不要超过3层。3、 法兰连接的管材堆放时,排与排之间应垫木材,木方厚度以使上下排之间管材接头互不接触为宜,长6m以内管材垫两处即可,6m以上管材不应少于3处。(三)钢丝网骨架管安装搬运1、 管材在搬运装卸过程中,应用非金属绳带捆扎、吊装。不得抛掷,拖拽,不允许与硬物利器撞击。2、 寒冷天搬运管材、管件时,严禁剧烈撞击,小心轻放。3、 法兰连接的管材、管件应特别注意保护管两端面及密封面,密封面不得划伤,密封槽棱角不得磕碰划伤。(四)运输1、 车辆运输管材时,应放置在平底车上,船运时,应放置在平坦的船舱内。运输时,直管应捆扎、固定避免互相碰撞。堆放处不应有可能损伤管材的尖凸物。2、 运输管件时,应按箱逐层码放整齐,并且牢固可靠。3、 管材、管件在长途运输中,应有遮盖物,避免暴晒和雨淋。(四)管道布置1、 在沟槽内铺设管道时,如设计未规定其它材料的基础,应铺设在未经扰动的原状土上。管道安装后,铺设管道时所用的垫块应及时拆除。2、 管道穿越公路时应设钢或钢筋混凝土套管,套管内径至少大于管材外径150mm。套管内有接头时,则必须在试压合格后方可进行穿越。3、钢丝网骨架管安装在地面下铺设时,最小管顶覆土厚度应符合下列规定:a、埋设在车行道下时,不宜小于1m;b、埋设在非行车道下时,不宜小于0.6m;c、埋设在水田下时,不宜小于0.8m。4、 在直管段埋设时宜随地形自然弯曲铺设,直管段结束端应设置固定支墩,以防止其变形压力传递到其他原件上并造成破坏。5、钢丝网骨架管安装埋设时,在直段较长的管线与阀门、弯头三通、管件设备(凝水缸、过滤器等)相接角处设置固定支墩。限定其在直管段上膨胀(或收缩)。6、 对于直管段较短时,管件处坑挖大一些,回填沙(或原状素土)要高于设计标0mm。7、 在地上安装时与阀门、缸体、水泵等相连时,要采取固定支架,直管段采取滑动(轴向、横向)支架。(五)土方工程1、土方施工技术要求a、在无地下水的地区开槽时,如沟深不超过下列规定,沟壁可不设边坡:b、在回填土地段开挖沟槽或雨季施工时,可酌情加大边坡或采用支撑及其它相应措施,保证沟槽不坍塌。在地下水水位较高地段施工时,应采取降低水位或排水的措施。其方法的选择应根据水文地质条件及沟槽深度等条件确定。c、深度在5m以内的沟槽,垂直壁适当采用支撑形式加固.d、开槽时,其沟底宽度一般为管外径加0.5m(即a
D+0.5);当有支撑时,沟底宽度应增2m(即a
D7);超过3m的沟槽每加深1m,沟底宽度增加0.2m(即a
D7+0);当沟槽为板桩支撑时时,其沟底宽度应增6m(即a
D+6))宽度外径)e、开挖沟槽时,沟底设计标高以2m的原状土应放土方工程里予以保留,铺管前根据连接找正情况人工清理,一般不宜超挖,若出现超挖应用砂土或素原土填补并夯实,沟槽内积水应及时排出。f、若沟底有不易清除的坚硬物体如岩石、砾石等,应铲除至设计标高以下2m,铺上砂土整平夯实至设计标高。凡可能引起管道不均匀沉降的地段,其地基应进行处理或采取其他防沉降措施。g、开挖沟槽时,与有关道、电缆、地下构筑物或文物古迹时,须予以保护,并及时与有关单位和设计部门联系协调处理。