100 North Senate AvenueRoom N642-BRIndianapolis, Indiana 46204

PHONE: (317) 233-2096 FAX: (317) 233-4929

Eric Holcomb, GovernorJoe McGuinness, Commissioner

<Date>

TO: 0000000 00000000INDOT Project Manager

FROM: 0000000 00000000Consultant Engineer<email><firm>

THROUGH: 0000000 00000000INDOT Engineer

SUBJECT: Hydraulic ReviewDes. #:Structure #:County:Location: <(Determined from BIAS or SPMS )>

Crossing: <(stream crossing)>DNR CIF Permit Required (Y/N):Legal Drain (Y/N):

Site ParametersDrainage Area (Area)

Q100 Discharge(discharge

) cfsQ100 Water Surface Elevation (tailwater)

(WS Elev) ft.

Design Roadway Serviceability Elevation

(serv. elev) ft.

Culvert PropertiesParameter Existing Proposal 1 Proposal 2 Proposal 3

Structure Size & Type

Q100 Headwater Elevation ft. ft. ft. ft.Q(dsgn) Headwater Elevation ft. ft. ft. ft.Meets Roadway Serviceability @ Q(dsgn) (Y/N) Backwater ft. ft. ft. ft.Outlet Velocity @ Q(dsgn) (vel) ft/s ft/s ft/s ft/sMinimal Outlet Riprap SizeInlet Riprap Needed (Y/N) (Inlet riprap)

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An Equal Opportunity Employer

< Designer Stamp >

< Signature >

< Signature >

100 North Senate AvenueRoom N642-BRIndianapolis, Indiana 46204

PHONE: (317) 233-2096 FAX: (317) 233-4929

Eric Holcomb, GovernorJoe McGuinness, Commissioner

Natural Channel Velocity @ Q(dsgn) ft/s ft/s ft/s ft/sMinimal Inlet Riprap Size (riprap size)

<<<Discussion of Existing Conditions, Proposals, and Analysis>>>

Riprap Design Recommendations

xxxx riprap on geotextiles should be used at the outlet and placed according to IDM Figure 203-2J. xxxx riprap at the inlet should be placed <give location or dimensions of existing scour> due to <give reason>.

Alternative scour protection designs should be submitted to the INDOT Office of Hydraulics for review and approval.

Beveled Edge Headwall Detail

Source: J. D. Schall, Hydraulic design of highway culverts, 3rd ed. Washington, D.C.: U.S. Dept. of Transportation, Federal Highway Administration, 2012. Pg. 3.5, Fig. 3.3

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An Equal Opportunity Employer

100 North Senate AvenueRoom N642-BRIndianapolis, Indiana 46204

PHONE: (317) 233-2096 FAX: (317) 233-4929

Eric Holcomb, GovernorJoe McGuinness, Commissioner

External Energy Dissipater Details – Riprap Basin

See IDM Figure 203-2K or HEC-14 for more information.

Riprap Basin Properties

Option 1 Option 2 Option 3 Option 4Basin Length (LB)Basin WidthApron Length (LA)Pool Depth (hs)Riprap Size

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An Equal Opportunity Employer

100 North Senate AvenueRoom N642-BRIndianapolis, Indiana 46204

PHONE: (317) 233-2096 FAX: (317) 233-4929

Eric Holcomb, GovernorJoe McGuinness, Commissioner

Inlet Depression Details

HDS 5 - Figure 3.5 Culvert with Inlet Depression

Inlet Depression Properties

Parameter Inlet Depression PropertiesReplacement Option Option #1 Option #2 Option #3 Option #4

T ft ft ft ftD ft ft ft ftD/2 (apron) ft ft ft ftD + 4T (total width) ft ft ft ft

D/2 + 2T (total length) ft ft ft ft

Total Crest Width ft ft ft ft

Riprap Class

If you have any questions or comments, please contact me at (317) 23X-XXXX.

cc: file

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An Equal Opportunity Employer