As reviewed over, concrete is rather sturdy in compression, but weak in tension. Larger earthquakes can deliver pretty large shear masses on structures. These shear masses matter the framework to equally tensile and compressional masses. Concrete buildings without reinforcement, like other unreinforced masonry buildings, can fail throughout critical earthquake shaking. https://wordpresswebsiteservices29516.tokka-blog.com/36051677/an-unbiased-view-of-concrete-reinforced-retaining-wall