V. Next step is laying of concrete base on the blinded surface and the positioned reinforcement.
A concrete base of 150 mm is to be laid or cast on the blinded floor, concrete grade C20 of ratio 1:2:4 is allowed (See concrete grading and mix ratio).
A guiding panel is placed into position to guild in the laying of the concrete base in order to achieve a uniformly alignment base edge, thickness and width, also to manage concrete material while pouring. The base is cast with the U shape reinforcement bottom in between the concrete base achieving concrete cover below and above.
VI. After setting and drying of the concrete base, next is to position the side wall panel form work.
The floor base is marked to give the required one meter (1000 mm) internal width where the panel will be positioned. The panel wall spacing is 100mm, and wall height of 1000mm (1 meter), the panel is lubricated, clipped and prepared to accept the
Concrete.
After casting, and setting, the panel is removed and concrete cured.
VII. Back filling and compaction of the back filling is done immediately after the back filling in order to avoid settlement.
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