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<br />- <br /> <br />Drainoge Area 1 RRn <br /> <br />CHANNEL DESCRIPTION <br /> <br />Bottom Material - Cohesive 0 Non Cohes/ve. <br />Bot/om Malerial Size - CloyD Sill 0 Sand. Grave/[] <br />Cobbles 0 Olher 0 <br />Slream Form - Slraighl . Meandering 0 Bra/ded 0 <br />Monnings "n" for Des/gn - Channel 0.03 Overbank 0.045 <br />Debris - Brush. Trees/Logs 0 Ice 0 Olher 0 <br /> <br />COMPARISON OF HYDRAULICS <br /> <br />I <br /> <br />DISCHARGE-FREQUENCY <br /> <br />~BRIDGE HYDIi'A [ <br />STAGE--DISCHARGE <br />- -, <br /> <br /><:;- <br />~ <br />~ <br />'- <br /> <br /> / <br /> V <br /> ,/ <br />/ <br />/ <br /> <br />4 <br /> <br /> <br />10,000 <br /> <br />;------ <br />UG-p---- <br />---I- <br />---I <br />--j---. <br />_--t----- <br />.--,L___ <br />---L------ <br />,.L---~ <br /> <br />1:2 <br />(j <br />~ <br />t5 <br />~ <br />~ <br />(j <br />!Q <br />t:::I <br />C) <br /> <br />------ <br />----- <br /> <br />~ -----.-. <br />i- <br />~Ig Roodl~L~~ <br />Profile Crod'fJ <br /> <br />1000 0 <br /> <br />12 16 <br /> <br />8 <br /> <br />~,...-~ <br />rc==---- <br />" - <br />7f==:= <br />r/ <br />-_....--.../ <br /> <br />10 <br /> <br />50 100 500 <br /> <br />RECURRENCE INTERVAL IN YEARS <br /> <br />Q DISCHARGE IN CFS <br />(x I 000) <br /> <br />Upper n'prop reference I"oe (Ufi>L) D. 4634.0' <br />Riprop Thickness (I) = 2.0 fl. <br />Riprap s/ze (050) = 12 in. <br />Excavated chonnel width = 97ft. <br />- Nel channel widlh = 88 <br /> <br />~~- <br />-=:::. --.~: <br /> <br /> <br />fl. <br /> <br />!G <br /> <br />!0~ 1<. <br />~> <br />. <br />~) <br />") <br /> <br />h .= 5 <br /> <br />fl. <br /> <br />8'" Type/I BeddIng <br /> <br />Channel Bal. <br />~ 462 f 4 Soul Bonk <br />E:/. -~ North <br />4C,U.O <br /> <br />Bonk <br /> <br />~ <br /> <br />SECT/ON A-A <br /> <br />Lower ri ra <br />relerence line <br /> <br />Umits of <br />trvctural Excavation <br /> <br />TYPICAL RIPRAP DETAIL <br /> <br />4640 <br /> <br /> r- <br />- <br /> -- --' .- <br />-- - - <br />l-- <br />l---- -- -' <br /> .-- <br /> <br />Sq. M,: <br /> <br />4635 <br /> <br />4630 <br /> <br />4625 <br /> <br />Velocity <br />N/A fps <br />7.6 fps <br />8.4 fps <br /> <br />Freeboard <br />N/A <br />o <br />3.5 <br /> <br />Max. <br />fl <br />fl <br />fl <br /> <br />BQckwoter <br />~/A <br />0.4 <br />0.1 <br /> <br />o <br /> <br />Nalural Channel <br />Existing <br />Proposed <br /> <br />il <br />_It <br />il <br /> <br />4620 <br /> <br />COMMENTS (100-YR) <br /> <br />PROF <br />