1 / 18

Eastmoreland Golf Course Culvert Replacement Lessons Learned

Eastmoreland Golf Course Culvert Replacement Lessons Learned. Job No. E09108. Agenda. Introduction of Project & Project Team Daniel Project Background Chad Scope & Technical considerations Joe R. What Worked Well and Why Pre Design/ Design Phase Joe R.

yaholo
Download Presentation

Eastmoreland Golf Course Culvert Replacement Lessons Learned

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Eastmoreland Golf Course Culvert ReplacementLessons Learned Job No. E09108

  2. Agenda Introduction of Project & Project Team Daniel Project Background Chad Scope & Technical considerationsJoe R. What Worked Well and Why Pre Design/ Design Phase Joe R. Construction/ Closeout Daniel Suggestions for Improvement Pre Design/ Design Phase Joe R. Construction/ Closeout Daniel Field Conditions/ means/ Safety(?) Joe P. Q & A/ Concluding Remarks Daniel

  3. Project Team ContractorDirt and Aggregate, Inc Construction ManagerDaniel Tariku Project Engineer Joe Richards BES Senior InspectorJoe Panis BES Field InspectorPhebi Grude Project TechnicianJoe Evinger Fish Rescue Chad Smith PIRondaFast SafetyBryan Davis Golf Course Superintendent Kathy Hauff

  4. Project Background • Crystal Springs Creek is the largest tributary of the Johnson Creek Watershed system. • Historically, the creek corridor and Westmoreland Park were a complex system of braided channels and wetlands that supported a diverse assemblage of fish and wildlife species. • The wetlands were drained and the creek was channelized in the late 1800s. • The 2.6 mile creek is fed by two sets of springs: one at Crystal Springs Rhododendron Garden and East Moreland Golf Course, and one at Reed College Canyon. • Approximately 4 cfs flows out of the two upper springs, through the project site. • Crystal Springs Creek receives very little stormwater runoff, as its highly urbanized watershed is drained by storm sewers and sumps. • The springs provide a steady clean cold-water source that is essential for the health of the aquatic organisms in the system. • This project is part of a BES program to improve fish passage and habitat in Crystal Springs Creek.

  5. Scope & Technical Considerations • Project replaces a triple barrel culvert with a bridge structure, removes existing concrete abutments, wing walls and concrete banks, improves habitat conditions through Large Woody Debris (LWD) and boulder placement, revegetation and streambed construction.

  6. Design Phase—What Worked Well & Why • Predesign documents were relevant to the design process. • Watershed focus on Crystal Springs helped to attract funding and mobilize resources for the project. • Specialization within the design team (Architect, Geotechnical, Water Resources, Biological and Structural) was an asset and fostered creativity. • Inclusive design environment engendered cooperation and respect. • Able to adapt to project changes and deliver a quality project.

  7. Suggestions for Improvement Design and Pre Design Phase

  8. Construction Phase—What Worked Well and Why Good communication between BES, Parks Bureau, and contractor Parks Superintendent attended most meetings and provided support for unforeseen field conditions

  9. Construction Phase—What Worked Well and Why • Golf course operations continued in a safe manner during the project duration

  10. Construction Phase—What Worked Well and Why • Project was completed and is performing its intended purpose

  11. Suggestions for Improvement Construction and Closeout Working on Crystal Springs was a challenge—Flow fluctuations Design Flow 4cfs. Actual 5 to 7 cfs Modeling: 19cfs; Contractor: 10cfs Upgraded pump capacity to 12cfs based on modeling flows Down graded back to 4 • Take additional samples on stream flow • Get change order proposal and agreement from the contractor prior to executing the change

  12. Analysis of required head for pumps Self cleaning screens Thorough review of submittals Communication Consider P.E. stamp on diversion plan

  13. Suggestions for ImprovementConstruction Specified streambed material was difficult to acquire. 5 rejections prior to approval. • When reviewing specs ask for where and how the material can be acquired.

  14. Suggestions for Improvement Owner supplied material Bridge Deck • Wrapped, bowed, and cambered • Sensitive to weather and dimensional instability • Some rejected and substituted with other material--$

  15. Suggestions for Improvement LWD’s had precise northing, easting, and elevation coordinates for both ends. Afterward many of these pieces needed to be moved around to better position them in relation to the stream banks.

  16. Suggestions for Improvement • Don’t overly rely on precise special placement of LWD’s OR have provisions for adjustment in the contract after placement

  17. Suggestions for Improvement Shown exiting 1’ X 1’ Concrete embankment turned out to be almost double the estimated quanity (30CY Vs. 54CY) Field Investigations at the time of design to minimize quantity increases

  18. Q & A

More Related