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用传统方法制作安装的水落管,存在着不少弊病。一是操作不方便,在砌筑时进行铁件预埋极易造成疏忽遗漏或碰损变形,有的因遗漏则采取凿眼补铁件的办法,造成卡子固定不牢和坠落遗失,尤其在有混凝土构造柱的部位,预埋铁件就更为困难。二是卡子的间距、出墙长度及上下顺直程度也不易掌握,致使水落管安装后正、侧面不顺直,影响观感效果。三是预埋的卡子影响日后的外墙装饰工程,卡子周围抹灰不易控制,甚至留下孔眼,产生渗漏。为了解决这些通病,我们采用了新的安装方法,这种方法操作简便,质量易于保证,特别是在混凝土构造柱上安装水落管,也同样易行,且更为牢固。现将这种方法介绍如下:
There are many drawbacks to making downpipes that are installed using traditional methods. First, the operation is inconvenient. When iron is embedded in the masonry, it is easy to cause careless omissions or damage and deformation, and some omissions are taken by the method of eye-breaking iron pieces, causing the clips to become unstable and fall. With concrete structural columns, it is more difficult to embed iron pieces. The second is that the distance between the clips, the length of the wall, and the straightness of the top and bottom are not easily grasped. As a result, the positive and side surfaces of the water drop tube are not straight and affect the perception effect. The third is that the embedded clips will affect the exterior wall decoration works in the future. Plaster around the clips is not easy to control, and even holes are left and leakage occurs. In order to solve these common problems, we have adopted a new installation method. This method is easy to operate and the quality is easy to guarantee. The installation of a drop tube on a concrete structural column is also easy and more robust. Now this method is described as follows: