- Mark either with a pen or with tape inside the drum, the height from the bottom layer of concrete to which the dense concrete needs to be poured (350/300/260)
- Prepare the mix referring to how to make concretes up and what goes in them in Stage X.
- Pour the concrete in 5 cm max. passes.
- Pack the concrete down after each pass in a consistent manner. If the concrete is packed down too much on one side, the cardboard mould will not stay in.
- Make sure the thicknesses are uniform and symmetrical as to not allow any movement in the moulds.
- If necessary, re-position the wedges as you are pouring the concrete.
- Repeat until you have reached the specified height.
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