4.3. Formwork for concrete stairs
Concrete stairs also require temporary formwork and the necessary check timber supports. As with timber stairs, check the height from floor to floor as the first step in the preparation of a set out. Divide this total rise into a suitable number of risers and then calculate the proportionate size to the go, as described in the chapter dealing with timber stairs. A flight of stairs should be easy and comfortable to climb. Certain dimensions must be followed to ensure this.
- External concrete stairs should also have a 6 mm fall on the top of the step to allow rainwater to run off.
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