
The depth of the channe l infra flat coat varied so as to economise a constant, rattling shallow gradient (less than 1/200) passim the length of the aqueduct; perpendicular shafts were bored at intervals to provide public exposure and access. Only in the final stretches was the conduit raised on arches, to fade a suitable head for distribution of the water indoors the city. In grade to keep the gradient constant, the aqueducts took a roun...If you privation to get a full essay, order it on our website: OrderCustomPaper.com
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