防水施工要点总结

Summary of key points of waterproof construction

防水工程是建筑工程中非常重要但又易于让人忽视的工程，一般部位的防水做法已相当成熟，但一些特殊部位的防水却是十分讲究，也容易出现问题。

Waterproof engineering is a very important but easy to be ignored project in the construction engineering. The waterproof practice of general parts is quite mature, but the waterproof of some special parts is very particular, and it is easy to have problems.

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电梯井、集水坑防水

Waterproof of elevator shaft and sump

电梯井、积水坑框格护坡模具 箱体护坡模具 华尔街铜牛 电阻柜 接地电阻柜 电缆保护接地箱 隔离墩模具 化粪池模具基层阴阳角，必须做成≥ 50mm的圆弧或45°（135°）八字角。

The internal and external angles of the base course of elevator shaft and water pit must be made into an arc of ≥ 50mm or an angle of 45 ° (135 °).

阴阳角、立面内角、外角及施工缝处，均做500mm宽的附加层。

An additional layer of 500mm width shall be built at the internal and external corners of the facade, external corners and construction joints.

电梯井、积水坑斜面的第二层防水卷材，采用带有砂粒的，以便于防水保护层的施工。

The second layer of waterproof membrane on the slope of elevator shaft and ponding pit shall be made of sand to facilitate the construction of waterproof protective layer.