1. 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

2. We are living in a 3-D World • DESIGN • MODELING • RE-DESIGN – Design Iterations • CONSTRUCTION • MONITORING • BEYOND – What is next

3. 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

5. What is a 3-D Design • Eagle Point • Surv-CAD • Geo-Pak • Land Desktop • Autodesk Civil Series • RiverMorph ? • HEC-RAS ?

6. 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

7. 3-D Design – Existing Surface

8. 3-D Design –Valley Slope

9. 3D- Morph Table, Entrainment NCD River Course II

10. 3-D Design – Constraints and Thalweg

11. 3D – Design Beltwidth

12. 3-D Design - Layout and Design

13. 3D – Breaklines for Surface

14. 3D – Layout and Design

15. 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

16. HEC-RAS ….. 3-D?

17. HEC-RAS – 2 Geometry Files

18. HEC-RAS

19. HEC-RAS

25. 3D & 2D Modeling

26. 3D – Simulations for Design

27. Re-Design, Constructability

28. Optimization

29. Optimization

30. 3-D Construction ?

31. 3-D Construction • Limited construction oversight • As-built conditions surveyed during construction • Efficient digging

32. GPS Construction DemoDecember 6th-7th 2006

34. Top Con GPS Hardware Installation 12-04-06 ~ 8 hrs

35. Traditional Cut Stake

36. Traditional Laser Level Setup

38. GPS Sensors on Bucket and Stick

39. GPS Sensors on Boom and Stick

40. Nightly removal of GPS antennas

41. GPS Demo

42. GPS Display in Cab of Cat 325

44. GPS Rover and Grade Rodman

45. 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

46. 3D - Monitoring • Photo Documentation • Profile Analysis - 3D Surveys • Cross-sectional Analysis - 3D Surveys • Planform Analysis - CAD

47. 3D – Surveys vs. 1-D Surveys

48. 3D – Surveys vs. 1-D Surveys

49. Example Photo Point Photo Point 19

50. Photo Objectives in Plan View