4. Concrete placement
4.1 Grade of concrete
The ready-mixed concrete shall be grade in accordance with the approved drawing.
4.2 Concrete placement method
After the borehole is inspected and found to be acceptable, concrete will be placed through the steel cone (15cm in diameter and 3 meters in length). Concrete will lower down to the bottom level and will not clash the borehole or steel reinforcement cage which will reduce the segregation of concrete.