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Published byVivian Cook Modified over 9 years ago
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“We Bring Engineering to Life” 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
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“We Bring Engineering to Life” We are living in a 3-D World DESIGN MODELING RE-DESIGN – Design Iterations CONSTRUCTION MONITORING BEYOND – What is next
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“We Bring Engineering to Life” 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
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“We Bring Engineering to Life”
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What is a 3-D Design Eagle Point Surv-CAD Geo-Pak Land Desktop Autodesk Civil Series RiverMorph ? HEC-RAS ?
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“We Bring Engineering to Life” 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
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“We Bring Engineering to Life” 3-D Design – Existing Surface
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“We Bring Engineering to Life” 3-D Design –Valley Slope
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“We Bring Engineering to Life” 3D- Morph Table, Entrainment NCD River Course II
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“We Bring Engineering to Life” 3-D Design – Constraints and Thalweg
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“We Bring Engineering to Life” 3D – Design Beltwidth
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“We Bring Engineering to Life” 3-D Design - Layout and Design
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“We Bring Engineering to Life” 3D – Breaklines for Surface
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“We Bring Engineering to Life” 3D – Layout and Design
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“We Bring Engineering to Life” 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
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“We Bring Engineering to Life” HEC-RAS ….. 3-D?
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“We Bring Engineering to Life” HEC-RAS – 2 Geometry Files
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“We Bring Engineering to Life” HEC-RAS
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HEC-RAS
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3D & 2D Modeling
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“We Bring Engineering to Life” 3D – Simulations for Design
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“We Bring Engineering to Life” Re-Design, Constructability
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“We Bring Engineering to Life” Optimization
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Optimization
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3-D Construction ?
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“We Bring Engineering to Life” 3-D Construction Limited construction oversight As-built conditions surveyed during construction Efficient digging
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GPS Construction Demo December 6th-7th 2006
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“We Bring Engineering to Life”
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Top Con GPS Hardware Installation 12-04-06 ~ 8 hrs
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“We Bring Engineering to Life” Traditional Cut Stake
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“We Bring Engineering to Life” Traditional Laser Level Setup
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“We Bring Engineering to Life”
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GPS Sensors on Bucket and Stick
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“We Bring Engineering to Life” GPS Sensors on Boom and Stick
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“We Bring Engineering to Life” Nightly removal of GPS antennas
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“We Bring Engineering to Life” GPS Demo
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“We Bring Engineering to Life” GPS Display in Cab of Cat 325
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“We Bring Engineering to Life”
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GPS Rover and Grade Rodman
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“We Bring Engineering to Life” 3-D Monitoring Data Analysis Shows current condition of the project Compares current condition to previous years Shows how stream is functioning Shows trends and direction
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“We Bring Engineering to Life” 3D - Monitoring Photo Documentation Profile Analysis - 3D Surveys Cross-sectional Analysis - 3D Surveys Planform Analysis - CAD
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“We Bring Engineering to Life” 3D – Surveys vs. 1-D Surveys
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“We Bring Engineering to Life” 3D – Surveys vs. 1-D Surveys
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“We Bring Engineering to Life” Example Photo Point Photo Point 19
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“We Bring Engineering to Life” Photo Objectives in Plan View
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“We Bring Engineering to Life” 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
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“We Bring Engineering to Life”
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Pool Length 84 ft to 71ft Pool Length 13 ft to 43 ft
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“We Bring Engineering to Life”
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Pool Length 84 ft to 71ft Pool Length 13 ft to 43 ft
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“We Bring Engineering to Life” 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
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“We Bring Engineering to Life” Profile Analysis Plot –Thalweg –Water Surface –Bankfull (Design) –Bankfull (Depositional Bench) –Top of Bank –Vanes and other structures
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“We Bring Engineering to Life” 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
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“We Bring Engineering to Life” Profile from Baseline
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“We Bring Engineering to Life” Using a Base Alignment
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“We Bring Engineering to Life” Using a Base Alignment
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“We Bring Engineering to Life” Profile from Thalweg
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“We Bring Engineering to Life” Using the Stream Profile
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“We Bring Engineering to Life” Example Profile
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“We Bring Engineering to Life” Example Structure Profiles
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“We Bring Engineering to Life” Surveying Stream Features
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“We Bring Engineering to Life” Looking upstream at Cross Vane ~ Sta: 4+00 Surveying Stream Features
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“We Bring Engineering to Life” Placement of Pin Flags Looking downstream at Cross Vane ~ Sta: 5+00
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“We Bring Engineering to Life” 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
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“We Bring Engineering to Life” 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
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“We Bring Engineering to Life” Cross-section Analysis Plot –Channel bed –End Pins –Bankfull Line –Top of Bank Line (if appropriate) –Survey Bank Profiles
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“We Bring Engineering to Life” Cross-section Analysis Calculations –Bankfull Area –Bankfull Width –Bankfull Mean Depth –Bankfull Maximum Depth –Floodprone Width –Width/depth Ratio –Entrenchment Ratio
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“We Bring Engineering to Life”
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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
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“We Bring Engineering to Life” Cross Section Location Correct X-Section Misplaced X-Section
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“We Bring Engineering to Life” 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
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“We Bring Engineering to Life” Planform Analysis Results –Radius of Curvature –Meander Wave Length –Channel Belt Width –Valley Length
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“We Bring Engineering to Life” Planform Analysis
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“We Bring Engineering to Life” Planform Analysis Radius Of Curvature
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“We Bring Engineering to Life” Planform Analysis Belt Width and MeanderWavelength
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“We Bring Engineering to Life” Planform Example Overlay As-build
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“We Bring Engineering to Life” And Beyond ? “ The more I learn the less I know”
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“We Bring Engineering to Life”
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Contact Information ? David Bidelspach Stantec – Raleigh NC 919-218-0864 David_Bidelspach@ncsu.edu David.Bidelspach@stantec.com
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