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Detail of hir Spillway <br /> rip-rap downstream <br /> MC99 Weir plate is backfilled nstream <br /> and compacted on both . <br /> weir <br /> sides. Rip-rap placed <br /> on downstream side of weir. <br /> P"I"I'M upstream <br /> _L__J_ <br /> upstream <br /> 0 5 10 15 20 <br /> scale in feet <br /> El 99 — El 99 downstream <br /> El 977— <br /> El 7— <br /> hed hll I'm upstream El.5 <br /> Rectangular Wier: <br /> opening- 8ft x 1.31t <br /> plate size- 16ft x 5 EL 86.5 <br /> material- steel plate or timber <br /> Figure 3 . Schematic diagram of the emergency spillway. <br /> 9 <br />