The reasons for the deformation of building formwork are:

1. Small steel formworks are assembled and not set as required, resulting in poor overall performance of the building

2. The foundation where the formwork is placed is not firm, the flat plate is not placed, and the poor waterproof measures cause the foundation to sink

3. The wooden building formwork or plywood is used for construction, but the concrete is not poured timely after the acceptance, and the surface is deformed due to long-term sunshine and rain.

4. The support spacing is too large, and the rigidity of steel plate is poor

5. The pouring speed of wall and column concrete is too fast, the pouring height is too high at one time, and the vibration is excessive