What is the standard height for dropping concrete to the point of deposit?

The standard height for dropping concrete to the point of deposit is crucial for ensuring proper placement and minimizing segregation. A drop height of 1.50 meters is commonly accepted in construction practices as it effectively balances the need for adequate workability and the prevention of excessive segregation of the concrete mixture. At this height, the kinetic energy is sufficient to allow concrete to flow into forms without introducing excessive air voids or causing the heavier aggregates to settle at the bottom.

Higher drop heights, such as 2.00 meters or more, can lead to issues like segregation and loss of workability. Conversely, a drop height of only 1.00 meter may not allow for efficient flow and could result in difficulties filling the forms properly. Therefore, the standard of 1.50 meters is established to optimize the performance of freshly mixed concrete during placement, ensuring structural integrity and quality.