As mentioned above, concrete is very strong in compression, but weak in stress. Greater earthquakes can generate extremely large shear masses on structures. These shear hundreds matter the structure to both tensile and compressional loads. Concrete buildings without reinforcement, like other unreinforced masonry structures, can fail during critical earthquake shaking. https://bookmarksaifi.com/story19848072/the-best-side-of-concrete-reinforced-beam