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<br />Examule Problem No, 1
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<br />A culvert at a new roadway crossing must be
<br />designed to pass the 25-year flood. Hydrologic
<br />analysis indicates a peak flow rate of 200 fr!/s, Use
<br />the following site information:
<br />
<br />Shoulder Elevation: 11 0 ft
<br />
<br />Natural Stream Bed Slope:
<br />= 0.01 ftIft
<br />
<br />1 pen:o:t
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<br />Design a circular pipe, culvert for this site,
<br />Consider the use of a corrugated metal pipe with
<br />standard 2-213 by 1/2 in corrugations and beveled
<br />edges and concrete pipe with a groove end. Base the
<br />design headwater on the shoulder elevation with a
<br />two ft freeboard (elevation 108,0 ft), Set the inlet
<br />invert at the natural streambed elevation (no FALL).
<br />
<br />Elevation at Culvert Face:
<br />
<br />100 ft
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<br />Tailwaterfor25-YearFlood: 3.5 ft
<br />
<br />Note: Design charts used in this example are
<br />reproduced on the following pages.
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<br />Approximate Culvert Length; 200 ft
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<br />".O.JIECT: EX.A.""PLE PtI_.M ;I"" STATION: I.,. DO CULVERT DESIGN fORM
<br />C~VTE R- Ill. #05 NO. 5 I I DESIGNER/DATE. , '6
<br /> SHUT o.
<br /> J "EVIEW(R I OATr. : .JMIl I 711ft
<br /> ItYOWOLOQlCAL DATA lLW:~(r117 JrtOAOWU IELEVAT<<* .1H2...fL.-UII
<br />.. Q M[THOlli. tlATIONAL
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<br />= 0 IaJlflUIO" >lIA Dana:. -.._<t:.~~!IQ___ ,...
<br /> . ~ II! L..,.&t,t, -=-=---=--
<br /> DI:StcM FLOWS.ITAlI ___ ~ . (hi ~
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<br />....te....'" - SIU,flf._SIZ[ -(ItT"AftCIE ..'" -- OVTLt:T COJmI). ...1: .. CQNMENTS'
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<br />c:n ..110' ....IIJ ......,,. ~ H.... CMUI'I aI TW ........1mlrM III 0..... E....-t.'-
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<br />tJI'MoL.......t.4.ra...I. NILL._" _.
<br />.tlIIICRPT KFUlIfI:MIS . -I-~- . elH...Y~.? UIIH~~ew.'
<br />a.____ ~IG~ OUTLET VIL"CIT'" - OUTl'T sIze 10\1.
<br />I. CUUP'f iN<< CI~CULA(
<br />...-- 01{ LARGER C,,>J1lUIT ,...,[:
<br />...-"'1....--. PROTECTION
<br />...._..fI\ft'--. '''llJG. .Olt
<br />......,,_....~ MAY /lE NiCESSAl(1' M..tl';l'&...:
<br />~.~._- UlTft..NCC" GRD.,1/I !WI)
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<br />51
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