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<br />DIVERSION STRUCTURE <br /> <br />Assume structure is ca~able of carrying 12,000 c.f.s. from Elm Creek <br />Approximate slope of diversion channel: ,0035 <br />Yetted perimeter: 500 feet (also approximately width of channel) <br />Area: 1,950 square feet <br />n: .035 <br />Length of channel: 2,500 feet <br />Total volume of channel: 4,875,000 cubic feet <br />180,556 cubic yard <br /> <br />Land required: 1,250,000 square feet (29 acres) <br />Levee and closure at railroad on county road: <br /> <br />Levee height: 6 feet <br />Top width: 10 feet <br />Sideslope: 3:l <br />Total length: 400 feet <br />Total volume of fill for levee: <br /> <br />67,200 cubic feet <br />2,500 cubic yards <br /> <br />Culvert at county road bridge: Two 72-inch culverts - 30 linear feet <br />County Road: assume 6-inch unreinforced concrete pavement <br /> <br />Remove 24 x 300 feet <br />Pave 24 x 300 feet <br /> <br />Item Cost <br /> <br />Land <br />Channel excavacion <br />Fine grading <br />Levee compaction <br />Levee topsoil <br />(6 inches) <br />Seed and mulch <br />Remove county road <br />Replase county road <br />Closure structure <br />Flood warning <br />Culvert at bridge <br />Levee for southwest <br />town <br /> <br />Ouantitv <br /> <br />29 <br />180,700 <br />2,000 <br />2 ,500 <br /> <br />360 <br />0.44 <br />7,200 <br />800 <br />1 <br />2 <br />60 <br /> <br />2,000 <br /> <br />Unit <br /> <br />'acre <br />c.y. <br />c,y. <br />c.y. <br /> <br />c.y. <br />acre <br />s.f. <br />s.y. <br />l.s. <br />l.s. <br />1. f. <br /> <br />1. f. <br /> <br />Subtotal <br /> <br />" <br />',', 7,200 square feet <br />7,200 square feet <br />800 square yd <br /> <br />Unit Cost <br /> <br />$ 1,200,00 <br />2.00 <br />.22 <br />.50 <br /> <br />2.60 <br />680.00 <br />1.25 <br />~5.25 <br />10 , 000. 00 <br />4,000.00 <br />250,00 <br /> <br />29.07 <br /> <br />Plus 30% <br /> <br />$ 10,440 <br />l08,420 <br />132 <br />375 <br /> <br />281 <br />90 <br />2,700 <br />3,660 <br />3,000 <br />2,400 <br />4,500 <br /> <br />l7,442 <br /> <br />Engineering and design aC 15% <br />Supervision and administr~tion at lO% <br /> <br />Total <br /> <br />'- <br /> <br />Total <br /> <br />$ 45,240 <br />469,820 <br />572 <br />1,625 <br /> <br />1,217 <br />389 <br />ll,700 <br />15 , 860 <br />. 13,000 <br />10,400 <br />19,500 <br /> <br />75,582 <br /> <br />$664,905 <br /> <br />99,736 <br />66,490 <br /> <br />$831,13l <br /> <br />Unit costs are based on project estimate along Yood River and Yarm <br />Slough near Grand Island and the Means Building Construction Cost Data <br />1991 Manual, 49th Edition, <br /> <br />c-s <br />