We know that the very first base should be strong enough to hold the upper one. This will ensure that no matter what happens, the upper layers will not crumble at all. For this very purpose, we use a crumpled form of grano and rocks.
Read MoreWe know that the very first base should be strong enough to hold the upper one. This will ensure that no matter what happens, the upper layers will not crumble at all. For this very purpose, we use a crumpled form of grano and rocks.
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