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Imagine placing ping pong balls in a regular pattern in the bottom of an empty swimming pool, then filling it up with water.
by beerandt 7y ago
Imagine placing ping pong balls in a regular pattern in the bottom of an empty swimming pool, then filling it up with water.
- BurningFrog 7y agoYou'd have to secure them in place. Perhaps with a metal grid.
- beerandt 7y agoSure it's doable, it just makes the task that much more difficult. Plus you need to ensure there are no unintentional voids from the balls blocking the pour. Code requires that they can't be within 1-2 inches of any steel or the surface of the concrete. Also, most designs assume a uniform cross section, and changing that greatly complicates the design method. And remember that the laborers doing this don't always understand (or care) about these sort of restrictions. It's usually cheaper and less risky to just use a lightweight mix, with injected air, if needed.