Question

Explain why stones are strong in compression but weak in tension ​

Answer 1

Because it has essentially zero strength in tension, it is almost always used as reinforced concrete, a composite material. It is a mixture of sand, aggregate, cement and water.

Answer 2

Gigantic towers, monuments and tall structures are always supported by a very thick layer of concrete that’s blended into their foundation. The purpose of this is quite straightforward: nothing provides greater support to a super heavy (and stationary) structure than a layer of concrete. There may be other things that, in theory, could provide a stronger foundation, but they wouldn’t be nearly as cost effective as concrete.