2 ms·
A proper arch shape supports its own weight and the load above it because of its shape, without needing any mortar or cement. https://en.wikipedia.org/wiki/Arc
by cortesoft 2y ago
A proper arch shape supports its own weight and the load above it because of its shape, without needing any mortar or cement.
https://en.wikipedia.org/wiki/Arch https://en.wikipedia.org/wiki/Arch