Labels:banana | book | box | hakham | lodestone | person | poster | reckoner OCR: CIVIL ENGINEERING Asan engineer, Leonardo devised plans to drain the DREDGER which Pontine would Marshes divert and the to build Arno River canals, from including Florence one to the sea and enable travel and irrigation eonardo designed this dredger clean and maintain canals The dred ger is held stationary while four scoops rotate. The scoops have holes in them to let the water drain out The remaining the the into sludge barges lowered, axle the dredger is on is the the riverbed. can deposited dred left adjustable be iging The When into pulled When height the scoops one the forward of area reach axle is to cleaned deeper clean CIVIL ENGINEERING the next section "A bookof how to deal with rivers, so that they may keep their bottom scoured by their own flow near the cities they pass. 1996 So ...
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