Building a dam is a complex multi step process that requires huge amounts of manpower raw materials and investment here are the basic steps to building a gravity dam the most common type of dam that we build gravity dams are so named because they are held to the ground by gravity they weigh a lot and are typically made from . Dams built up on small scale by compacting successive layers of earth using the most impervious materials to form a core and placing more permeable substances on the upstream and downstream sides a facing of crushed stone prevents erosion by wind or rain and a suitable spillway usually of concrete protects against catastrophic overflow of the dam. Dam basics learn the basics about the biggest and costliest structures we build the dam challenge repair it replace it leave it alone you decide. Students are introduced to the concept of a dam and its potential benefits which include water supply electricity generation flood control recreation and irrigation this lesson begins an ongoing classroom scenario in which student engineering teams working for the splash engineering firm design dams for a fictitious client thirsty county
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