Answer :
Answer:
According to ASTM C138, when vibrating concrete for each layer, you should vibrate at each of the following points:- 3 different points
Explanation:
- ASTM C138 specifies that concrete should be vibrated at 3 different points for each layer to ensure proper consolidation and removal of air voids.
- Vibrating at multiple points helps distribute the concrete evenly and eliminates potential weak spots or air pockets within the structure.
- By vibrating at 3 different points per layer, the concrete becomes more compacted, enhancing its strength and durability.
- This standard procedure aims to achieve consistent and high-quality concrete placement for construction projects.