Download - HYDRAULIC DESIGN MANUAL UPDATES
![Page 1: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/1.jpg)
HYDRAULIC DESIGN MANUAL UPDATES
Stanley (Stan) Hopfe, P.E., CFM
Chief Hydraulics Engineer
October 12, 2016
![Page 2: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/2.jpg)
Hydraulic Design Manual Updates:
Three critical updates:
Sheet flow analysis is now required for storm
sewer projects.
Intensity Duration Frequency (IDF) Curves
updated.
Storm sewer and culvert maintenance velocities
have increased (from 2 fps to 3 fps)
![Page 3: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/3.jpg)
Hydraulic Design Manual Release
Hydraulic Design Manual Release Date:
July 1, 2016
Effective on all new projects with a Start Date:
August 1, 2016 or later
![Page 4: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/4.jpg)
SHEET FLOW ANALYSIS REQUIRED FOR STORM SEWER PROJECTS
![Page 5: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/5.jpg)
Objective of the Sheet Flow Analysis
Do not compromise existing sheet flow
patterns.
Insure the roadway provides storm
conveyance for the extreme events without
significant impacts to adjacent structures.
![Page 6: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/6.jpg)
Primary System
(Storm Sewer)
Secondary System
(Roadway)
Storm Sewer
Design
Extreme Event
Drainage System (Storm Sewer and Roadway)
![Page 7: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/7.jpg)
Drainage System (Storm Sewer and Roadway)
Primary System
(Storm Sewer)
Secondary System
(Roadway)
Storm Sewer
Design
Extreme Event
![Page 8: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/8.jpg)
Contour Map
Proposed Road
104
103
102
101
100
![Page 9: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/9.jpg)
Existing Sheet Flow Map
Proposed Road
104
103
102
101
100
HP 100.75HP 101.0
HP 101.5
LP 100.0LP 99.5 LP 101.0
HP 102.0
![Page 10: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/10.jpg)
Existing Sheet Flow Map
Proposed Road
104
103
102
101
100
HP 100.75HP 100.5
HP 101.5
LP 100.0LP 99.5 LP 101.0
HP 102.0
99
![Page 11: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/11.jpg)
Proposed Sheet Flow Map
Proposed Road
104
103
102
101
100
HP 100.75HP 100.3
HP 101.6
LP 99.9LP 99.3 LP 101.0
HP 102.0
99
![Page 12: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/12.jpg)
Final Sheet Flow Map
Proposed Road
104
103
102
101
100
Proposed
Existing
99
![Page 13: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/13.jpg)
Proposed Profile
Proposed
Roadway’s PGL
100-Year
Event
Depressed
Roadway
![Page 14: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/14.jpg)
Cascading Profile to Outfall
Proposed
Roadway’s PGL
![Page 15: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/15.jpg)
Proposed Profile
Proposed
Roadway’s PGL
100-Year
Event
Upsized
Outfall
![Page 16: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/16.jpg)
HEC-RAS for Roadway (100-Year Event)
b
3500
3000
2500
2000
1500
900
100
a
None of the XS's are Geo-Referenced ( Geo-Ref user entered XS Geo-Ref interpolated XS Non Geo-Ref user entered XS Non Geo-Ref interpolated XS)
Some schematic data outside default extents (see View/Set Schematic Plot Extents...)
![Page 17: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/17.jpg)
Crown of
RoadwayTop of Curb
ROW
![Page 18: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/18.jpg)
0 500 1000 1500 2000 2500 3000 3500 400097
98
99
100
101
102
103
104
street Plan: Plan 01 9/8/2009
Main Channel Distance (ft)
Ele
vation
(ft)
Legend
WS PF 1
Crit PF 1
Ground
a b
HEC-RAS Profile of Roadway
Plot Critical
Elevations
100-Year Water
Surface Profile
![Page 19: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/19.jpg)
INTENSITY DURATION FREQUENCY CURVES(IDF CURVES)2015 - E, B, & D coefficients
![Page 20: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/20.jpg)
Intensity-Duration-Frequency Curve (IDF Curves)
Old IDF curves were based off TP-40 (1960s)
Last IDF update occurred over 30 years ago
(1985).
The 2015, IDF curves will provide a stopgap
measure until the NOAA Atlas 14 Precipitation
Frequency data server comes online for Texas.
![Page 21: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/21.jpg)
USGS Atlas of Depth Duration Frequency of
Precipitation Annual Maxim for Texas - 2004
![Page 22: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/22.jpg)
Intensity-Duration-Frequency (IDF) Curves
July 14, 2016
IDF Curves 2015 v2.1
![Page 23: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/23.jpg)
MINIMUMMAINTENANCE VELOCITY
Storm Sewer and Culverts
Increased from 2 fps to 3 fps
![Page 24: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/24.jpg)
Maintenance Velocity
Storm Sewer and Culvert Minimum Maintenance
Velocities Increased from 2 fps to 3 fps.
![Page 25: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/25.jpg)
WHAT NEXT?
![Page 26: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/26.jpg)
HYDRAULIC DESIGN MANUAL
Future Chapters
![Page 27: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/27.jpg)
Proposed New Chapters for 2017
Detention
Coastal
![Page 28: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/28.jpg)
NOAA ATLAS 14PRECIPITATION DATA FREQUENCY
SERVERAPRIL 2018
http://hdsc.nws.noaa.gov/hdsc/pfds/
![Page 29: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/29.jpg)
NOAA Atlas 14 Study Contributions
Brazos River Authority $15,000
City of Austin $50,000
Harris County Flood Control District $200,000
Texas Department of Transportation $740,000
$1,005,000
Source: http://www.pooledfund.org/Details/Solicitation/1421
![Page 30: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/30.jpg)
Select a State
![Page 31: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/31.jpg)
Drag & Drop Crosshair to Location
![Page 32: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/32.jpg)
Data Type:
![Page 33: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/33.jpg)
![Page 34: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/34.jpg)
CLIMATE CHANGEGUIDANCE 2018 ±
![Page 35: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/35.jpg)
Presidential Executive Order 13690
January 30, 2015
Establish Federal Flood Risk Management
Standard (FFRMS) (amends EO 11988).
Describes 3 approaches to achieve “Future Flood”
standards:
Freeboard Value Approach (FVA).
Use 500-year floodplain elevation and extent
(0.2PFA).
Climate-Informed Science Approach (CISA).
![Page 36: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/36.jpg)
Presidential Executive Order 13690
January 30, 2015
Establish Federal Flood Risk Management
Standard (amends EO 11988).
Describes 3 approaches to achieve “Future Flood”
standards:
Freeboard Value Approach (FVA).
Use 500-year floodplain elevation and extent
(0.2PFA).
Climate-Informed Science Approach (CISA).
![Page 37: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/37.jpg)
FHWA
HEC-17
2nd Edition
June 2016
![Page 38: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/38.jpg)
FHWA
HEC-25
Volume 2
October 2014
![Page 39: HYDRAULIC DESIGN MANUAL UPDATES](https://reader031.vdocuments.us/reader031/viewer/2022012410/616a53ab11a7b741a35148b4/html5/thumbnails/39.jpg)
Question & Answers
Stanley (Stan) Hopfe, P.E., CFM
Chief Hydraulics Engineer
512 416-2219