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天沟后期漏水怎么办
2019-03-22 19:56:04   来源:杭州摩鼎建材   

天沟后期漏水,我想这不是关于做法的问题。因为天沟是整体弯成,本身并不会漏水,漏水的可能性包括:
 
  1)如果采用国内一般普通的彩板,时间长了当然容易锈蚀。当用2mm~3mm的钢板做天沟时,一般选用防锈漆,也可以电镀锌或者热镀锌。当然用不锈钢挺好,可价格...。BHP的彩板防腐蚀还是不错的。如果要求严格的话,建议内天沟采用不锈钢(1mm),外天沟仍采用彩板。采用1mm以上的板做天沟似显笨重,不合轻钢。外天沟不用起坡,内天沟可利用间距为500的吊带的长度调节来起坡,
 
  2)天沟的搭接处可能漏水。一般说来这种可能性不大,只要搭接长度足够,密封胶均匀就能避免。天沟搭接采用焊接。(对于焊接对涂层的破坏应采取处理措施)此方案的缺点是天沟的挠度带来的积水问题难以解决!挠度肯定是有的,除非预弯,否则只能采取找坡措施,而且应该密度较小的找坡材料。建议选用2.5mm以上的钢板制作!天沟可代替檐口檩条、甚至联系梁!
 
  3)天沟反水。这主要是天沟尺寸设计不够,或落水管堵住,不关做法问题,可通过增加溢水口来预防。
 
  彩钢天沟需要现场对接.通常情况下,彩钢板的锈蚀是从切口、孔洞开始,普通铆钉也会锈蚀,(彩板切口处的腐蚀确实是一个问题。但如果采用的基板是镀铝锌的,会有电池还原的补偿作用,能较好地减少此处的腐蚀问题。)特别是抽心出易导致渗漏!理论上,彩钢板表面抗腐蚀能力,确实比普通钢板好,可是它太薄了,一旦开始锈蚀马上就会导致漏水。普通天沟则不然;甲方在这个问题上,也很认同这点;所以在选择方案时也偏向普通钢板天沟(特别是在6m柱距时)。至于强度,施工中,还拿它作为施工通道呢,可见普通天沟的刚度肯定比彩板天沟好!


I don't think it's a matter of practice. Because the gutter is bent as a whole and does not leak in itself, the possibility of leaking includes:
 
1) If the common domestic color plate is used, it will be easy to rust for a long time. When using 2mm ~ 3mm steel plate as trench, rust-proof paint is usually used, and galvanizing or hot-dip galvanizing can also be used. Of course, stainless steel is good, but the price is.... BHP's colour plate is good for corrosion protection. If the requirements are strict, stainless steel (1mm) is recommended for inner trench and color plate for outer trench. It seems heavy to use more than 1 mm plate to make a gutter, which is not suitable for light steel. Outer Tiangou does not need to start a slope. Inner Tiangou can start a slope by adjusting the length of the sling with a distance of 500.
 
2) Water may leak at the junction of the gutter. Generally speaking, this possibility is not very likely, as long as the lap length is enough, sealant uniformity can be avoided. Welding is used for the overlap of the gutter. The disadvantage of this scheme is that the problem of water accumulation caused by the deflection of the trench is difficult to solve. Deflection must exist, unless pre-bending, slope-finding measures can only be taken, and the density of slope-finding materials should be smaller. It is suggested that steel plate with 2.5mm or more should be used to make it! Tiangou can replace eaves purlin and even contact beams! ___________
 
3) Reverse water in the gutter. This is mainly due to the insufficient design of the size of the gutter, or the blockage of the downspout, which is not related to the practice, and can be prevented by increasing the overflow outlet.
 
The stainless steel trench needs to be docked on site. Usually, the corrosion of the stainless steel plate starts from the notches and holes, and the ordinary rivets will also be corroded. (Corrosion at the notches of the stainless steel plate is indeed a problem. However, if the substrate is aluminized and zinc plated, there will be a compensation effect of battery reduction, which can better reduce the corrosion problem here. ) In theory, the surface corrosion resistance of color steel plate is better than that of ordinary steel plate, but it is too thin, once rust begins, it will lead to leakage immediately. Ordinary trench is not the case; Party A also agrees with this point on this issue; therefore, when choosing the scheme, it also prefers ordinary steel plate trench (especially when the column spacing is 6m). As for the strength, in the construction, it is also used as the construction channel. It can be seen that the stiffness of the ordinary trench is better than the color plate trench.

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