Materials+review

chicaalterego: i want to know more about it too, i had the impression that all stones are the same, what can you say about that?
====alejandromam: Although the stone age has ended virtually everywhere, rocks continue to be used to construct buildings and infrastructure. Besides there is also various types of rocks, and there is sometimes the need of using small stones in mortar to support structures… well, rocks alone are better nevertheless. They are more resistant, simply put one over another since the stones have a lower deformation rate, and are more rigid.====

alejandromam: what’s that?
====alvaradogabriela22: Bricklaying are techniques of putting a brick over another, there are many of them, you can simply put, one next to another, or one on the middle of the next one and continuing from that…====

chicaalterego: till next week
[|Recording]