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concrete can take up to ~30 mpa of compressive stress. the density of concrete is about 2.4 g/cc. what is the height limit of a vertical concrete pillar, without fail on its own weight?

Sagot :

The maximum height shall not exceed 4 meters, while the minimum height for buildings without air conditioning is 2.75 meters.

For typical constructions, the minimum distance between columns is 2.5 meters and the maximum span is 7.5 meters. How does the cost of the construction change as the space between columns increases? The cost of the structure rises when the distance between reinforced concrete columns is increased. Most people consider L/r ratios up to 16 for columns' height to be acceptable, but in a rare instance, I once saw a structural consultant's design that had L/r ratios up to 22. L stands for free standing height. "r" refers to the column's breadth, which is its smallest lateral dimension.

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