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河北快三多少期:天溝后期漏水怎么辦
2019-03-22 19:56:04   來源:杭州摩鼎建材   

天溝后期漏水,我想這不是關于做法的問題。因為天溝是整體彎成,本身并不會漏水,漏水的可能性包括:
 
  1)如果采用國內一般普通的彩板,時間長了當然容易銹蝕。當用2mm~3mm的鋼板做天溝時,一般選用防銹漆,也可以電鍍鋅或者熱鍍鋅。當然用不銹鋼挺好,可價格...。BHP的彩板防腐蝕還是不錯的。如果要求嚴格的話,建議內天溝采用不銹鋼(1mm),外天溝仍采用彩板。采用1mm以上的板做天溝似顯笨重,不合輕鋼。外天溝不用起坡,內天溝可利用間距為500的吊帶的長度調節來起坡,
 
  2)天溝的搭接處可能漏水。一般說來這種可能性不大,只要搭接長度足夠,密封膠均勻就能避免。天溝搭接采用焊接。(對于焊接對涂層的破壞應采取處理措施)此方案的缺點是天溝的撓度帶來的積水問題難以解決!撓度肯定是有的,除非預彎,否則只能采取找坡措施,而且應該密度較小的找坡材料。建議選用2.5mm以上的鋼板制作!天溝可代替檐口檁條、甚至聯系梁!
 
  3)天溝反水。這主要是天溝尺寸設計不夠,或落水管堵住,不關做法問題,可通過增加溢水口來預防。
 
  彩鋼天溝需要現場對接.通常情況下,彩鋼板的銹蝕是從切口、孔洞開始,普通鉚釘也會銹蝕,(彩板切口處的腐蝕確實是一個問題。但如果采用的基板是鍍鋁鋅的,會有電池還原的補償作用,能較好地減少此處的腐蝕問題。)特別是抽心出易導致滲漏!理論上,彩鋼板表面抗腐蝕能力,確實比普通鋼板好,可是它太薄了,一旦開始銹蝕馬上就會導致漏水。普通天溝則不然;甲方在這個問題上,也很認同這點;所以在選擇方案時也偏向普通鋼板天溝(特別是在6m柱距時)。至于強度,施工中,還拿它作為施工通道呢,可見普通天溝的剛度肯定比彩板天溝好!


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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