Edward Yousif February 2013

DRAINAGE DESIGN MANUALREVISION HIGHLIGHTS

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DRAINAGE SOFTWARE (HYDROLOGY AND HYDRAULICS)

XP SWMM

StreamStats

Hydraulic Toolbox (Version 4.0)

Geopak Drainage (Bentley V8i)

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SECTION 4.0 FLOODPLAIN / DETENTION SEPARATION

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SECTION 8 CULVERT DESIGN

Culvert bottom should be designed with a natural soil “n” value.

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SECTION 9.2 BRIDGE HYDRAULIC DESIGN

WWIT Calculation Sheet Appendix H

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Waterway Information Table Back-Up Calculations

Calculate Freeboard and Clearance

Calculate Effective Waterway Opening Area For Bridge

Calculate Effective Waterway Opening Area For Culvert

Calculate Created Head

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SECTION 10.0 ROADWAY DRAINAGE DESIGN

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SECTION 10.5 LINE OR REPLACE EXISTING CMP PIPES

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SECTION 11.0 STORMWATER DETENTION STORAGE

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DITCH CHECKS – CHECK DAMS

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SECTION 11.5 DETENTION IN DITCHES

Base Sheet M-26

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APPENDICES - DRAINAGE CALCULATIONS Provide summary tables and narrative descriptions for

each set of calculations. Provide clear references to proposed plan and profile sheets.

Use Tollway recommended drainage software, or provide sample calculations if other software is used.

Tollway calculations should be separated from calculations performed for other agencies.

Check Concept Drainage Report before starting work on contract drawings. List inconsistencies with the Tollway Drainage Manual.

Verify survey vs. as-built drawings via field check.

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Questions ?

E-Mail: edward.yousif@aecom.com

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