3 d stream restoration design monitoring and beyond
Download
1 / 93

3-D Stream Restoration Design, Monitoring and Beyond - PowerPoint PPT Presentation


  • 896 Views
  • Updated On :

3-D Stream Restoration Design, Monitoring and Beyond. David Bidelspach, PE - Stantec Consulting Greg Jennings, PE – NCSU BAE Dan Clinton, PE – Town of Cary Barbara Doll, PE – NC Sea Grant. We are living in a 3-D World. DESIGN MODELING RE-DESIGN – Design Iterations CONSTRUCTION MONITORING

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about '3-D Stream Restoration Design, Monitoring and Beyond' - Gideon


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
3 d stream restoration design monitoring and beyond l.jpg

3-D Stream Restoration Design, Monitoring and Beyond

David Bidelspach, PE - Stantec Consulting

Greg Jennings, PE – NCSU BAE

Dan Clinton, PE – Town of Cary

Barbara Doll, PE – NC Sea Grant


We are living in a 3 d world l.jpg
We are living in a 3-D World

  • DESIGN

  • MODELING

  • RE-DESIGN – Design Iterations

  • CONSTRUCTION

  • MONITORING

  • BEYOND – What is next


What is a 3 d design l.jpg
What is a 3-D Design

  • Eagle Point

  • Surv-CAD

  • Geo-Pak

  • Land Desktop

  • Autodesk Civil Series

  • RiverMorph?

  • HEC-RAS?

- Manage Points

- Define Alignments

- Create Points from Alignments

- Build Surfaces


What is a 3 d design5 l.jpg
What is a 3-D Design

  • Eagle Point

  • Surv-CAD

  • Geo-Pak

  • Land Desktop

  • Autodesk Civil Series

  • RiverMorph ?

  • HEC-RAS ?


Benefits of 3 d design l.jpg
Benefits - of 3-D Design

  • Hydraulic Modeling is Not Limited

  • Easier to Create Design Revisions and Iterations

    • Better Estimate of Quantities

    • Optimization of Project Reaches

    • Constructability

  • Assist in Construction Stakeout

  • GPS Guided Construction Equipment

    • Good Check for On-site Stupidity During Construction




3d morph table entrainment ncd river course ii l.jpg
3D- Morph Table, Entrainment NCD River Course II


3 d design constraints and thalweg l.jpg
3-D Design – Constraints and Thalweg



3 d design layout and design l.jpg
3-D Design - Layout and Design




3 d design modeling summary l.jpg
3-D Design - Modeling Summary

  • Engineering to Check and Design

    • Sediment, Backwater, Velocity, & Shear Stress

  • HEC-RAS Limitations

    • 1-D only

      • cannot model actual flow around bends, in constrictions, or other 2-D, 3-D flows

      • cannot model channel-floodplain interactions



Hec ras 2 geometry files l.jpg
HEC-RAS – 2 Geometry Files










3 d construction l.jpg
3-D Construction

  • Limited construction oversight

  • As-built conditions surveyed during construction

  • Efficient digging


Slide32 l.jpg

GPS Construction DemoDecember 6th-7th 2006











3 d monitoring data analysis l.jpg
3-D MonitoringData Analysis

  • Shows current condition of the project

  • Compares current condition to previous years

  • Shows how stream is functioning

  • Shows trends and direction


3d monitoring l.jpg
3D - Monitoring

  • Photo Documentation

  • Profile Analysis - 3D Surveys

  • Cross-sectional Analysis - 3D Surveys

  • Planform Analysis - CAD




Slide49 l.jpg

Example Photo Point Photo Point 19



Profile analysis l.jpg
Profile Analysis

  • Utilize CAD Program if data collected with the use of a Total Station

  • Alignment set at as-built time

    • Allows for direct comparison of stationing

    • Alter alignment if channel migrates “significantly”

  • Record thalweg length annually

  • Survey at the thalweg based on stream feature


Slide54 l.jpg

Pool Length

13 ft to 43 ft

Pool Length

84 ft to 71ft


Slide57 l.jpg

Pool Length

13 ft to 43 ft

Pool Length

84 ft to 71ft


Profile analysis58 l.jpg
Profile Analysis

  • Utilize CAD Program if data collected with the use of a Total Station

  • Alignment set at as-built time

    • Allows for direct comparison of stationing

    • Alter alignment if channel migrates “significantly”

  • Record thalweg length annually

  • Survey at the thalweg based on stream feature


Profile analysis59 l.jpg

Plot

Thalweg

Water Surface

Bankfull (Design)

Bankfull (Depositional Bench)

Top of Bank

Vanes and other structures

Profile Analysis


Creating stationing from survey points l.jpg
Creating Stationing from Survey Points

  • Create Stationing Based on a Baseline

    • Thalweg Baseline vs. Centerline Baseline

  • Exporting Points Based on a Baseline Alignment

    • Changing description keys for River Morph of other software programs

    • AutoCAD, Micro-Station, Eagle Point, Arc-View, and SurvCAD










Surveying stream features69 l.jpg
Surveying Stream Features

Looking upstream at Cross Vane ~ Sta: 4+00


Placement of pin flags l.jpg
Placement of Pin Flags

Looking downstream at Cross Vane ~ Sta: 5+00


Profile analysis71 l.jpg
Profile Analysis

  • Calculations

    • Lengths and Slopes of stream features

      • From Excel / CAD

    • Spacing of stream features

    • Locations of features with respect to planform

    • Report Minimum, Maximum and Median for length, spacing and slope in summary table


Cross section analysis l.jpg
Cross-section Analysis

  • Utilize CAD Program if data collected has been collected with a Total Station

  • Alignment and stationing are set at as-built time

    • Allows for direct comparison of stationing

    • Allows for easier data collection


Cross section analysis73 l.jpg
Cross-section Analysis

  • Bankfull Line

  • Top of Bank Line (if appropriate)

  • Survey Bank Profiles

  • Plot

    • Channel bed

    • End Pins


Cross section analysis74 l.jpg
Cross-section Analysis

  • Calculations

    • Bankfull Area

    • Bankfull Width

    • Bankfull Mean Depth

    • Bankfull Maximum Depth

    • Floodprone Width

    • Width/depth Ratio

    • Entrenchment Ratio


Cross section calculations l.jpg
Cross-section Calculations

  • Notes of Caution

    • Area must be calculated based on the same datum year after year

    • Area can be calculated based on bankfull deposition but the standard should be the designed bankfull

    • Survey line must be consistent year after year


Cross section location l.jpg

Misplaced

X-Section

Correct

X-Section

Cross Section Location


Planform analysis l.jpg
Planform Analysis

  • Utilize CAD Program if data collected on Total Station

  • Most variable of all measurements

  • Field measurements very difficult and most variable

  • Works best if as-built to designed underlain current monitoring


Planform analysis81 l.jpg
Planform Analysis

  • Results

    • Radius of Curvature

    • Meander Wave Length

    • Channel Belt Width

    • Valley Length



Slide83 l.jpg

Planform AnalysisRadius Of Curvature


Slide84 l.jpg

Planform AnalysisBelt Width and MeanderWavelength


Planform example overlay as build l.jpg
Planform ExampleOverlay As-build


And beyond the more i learn the less i know l.jpg
And Beyond ?“ The more I learn the less I know”


Contact information l.jpg
Contact Information ?

David Bidelspach

Stantec – Raleigh NC

919-218-0864

David_Bidelspach@ncsu.edu

David.Bidelspach@stantec.com