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Hydraulic Jump Basin Design <br />Standard Type III Stilling Basin Design <br />PFM Basis <br />Dimensions <br />500 yr Check <br />Standard Type III Basin <br />Selected <br />0.008 <br />0.014 <br />0.008 <br />Q (cfs) <br />1522 <br />1521 <br />792 <br />q (cfs) <br />101.5 <br />101.4 <br />52.8 <br />V1 (fps) <br />60.8 <br />54.8 <br />51.3 <br />F1 <br />8.3 <br />7.1 <br />8.9 <br />D1 (ft.) <br />1.67 <br />1.85 <br />1.08 <br />D2 (ft.) <br />18.79 <br />17.67 <br />14.77 <br />Basin Length (ft.) <br />49.6 <br />45.8 <br />50.0 <br />Chute Block Height (ft.) <br />1.67 <br />1.85 <br />1.71 <br />Chute Block Width (ft.) <br />1.67 <br />1.85 <br />1.5 <br />Baffle Block Height (ft.) <br />3.35 <br />3.33 <br />3.33 <br />Baffle Block Width and Spacing (ft.) <br />2.52 <br />2.50 <br />2.5 <br />Distance from Toe of Slope to Baffle Block (ft.) <br />15.03 <br />14.14 <br />15.5 <br />End Sill Height <br />2.46 <br />2.60 <br />8.5 <br />Basin End Wall Height Determination <br />134 <br />134 <br />Flow Through Openings at Wall (cfs) <br />Remaining Flow over Weir Wall (cfs) <br />1388 <br />1387 <br />q (cfs) <br />92.5 <br />92.5 <br />Tail water depth based on 85% D2 <br />15.97 <br />15.02 <br />Estimated Weis" C" w/submergence <br />2.70 <br />2.70 <br />3.19 <br />Estimated Head on Weir <br />10.54 <br />10.54 <br />Weir Wall Height Based onfull d2 <br />8.2 <br />7.14 <br />8.5 <br />Weir Wall Height Based on 85% d2 <br />5.43 <br />4.49 <br />Basin Wall Height Check <br />8.0 <br />7.2 <br />6.6 <br />Calculated Freeboard Recommended <br />Full Recommended Basin Wall Height (ft.) <br />26.7 <br />24.9 <br />21.4 <br />Freeboard in feet = 0.1(v1+d2) <br />