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DEPARTMENT OF PUBLIC WORKS BUREAU OF ENGINEERING & CONSTRUCTION STRUCTURAL DESIGN SECTION PowerPoint Presentation
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DEPARTMENT OF PUBLIC WORKS BUREAU OF ENGINEERING & CONSTRUCTION STRUCTURAL DESIGN SECTION - PowerPoint PPT Presentation

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DEPARTMENT OF PUBLIC WORKS BUREAU OF ENGINEERING & CONSTRUCTION STRUCTURAL DESIGN SECTION
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  1. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION REPLACEMENT OF BRIDGE NO. B-0427 ON DAIRY ROAD OVER OWL BRANCH 2014 Maryland Concrete Conference David Berkhimer Brawner Builders, Inc. Kevin J. Sabolcik, P.E. Baltimore County DPW

  2. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION An economic approach to a small bridge replacement project Or ‘Bridge on the Quick & cheap’

  3. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION Problem Analysis – Decision Process Design Construction Conclusion

  4. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION What is a project? A series of planned events undertaken in a systematic manner to achieve a specific outcome while balancing the constraints of schedule, cost and performance or quality.

  5. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION • Existing Structure • Built Circa 1920 • Concrete Slab w/Encased Steel Beam Superstructure • Concrete Abutments on Spread Footings • 16’ Long Span, 20’ Clear Roadway, 24’ Out to Out Width

  6. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION Bridge No. B-0427 Dairy Road Elevation

  7. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION Bridge B-0427 Dairy Road Approach

  8. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION Interim Action

  9. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION • Structure Condition • Overall Sufficiency Rating ≈ 38% • Superstructure in Poor Condition • Substructure in Satisfactory Condition • Some Minor Lowering of the Stream Bottom along Abutments/Exposed Footings

  10. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION Dairy Road Characteristics • Rural Local Road (Northern Balt. Co.) • Width Varied 16’ to 18” • Tangential / Flat Alignment • ADT ≈ 575 VPD/2% TRUCKS • 30 MPH Design Speed • No History Of Accidents At Site

  11. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION Other Design Consideration • Adjacent Overhead Utilities • Soil Borings Indicated 10’ Silt/Sand Mix, 15’ Decomposed Rock then Rock • No ROW beyond Existing Footprint • USE III Waterway (10/1 to 4/30 Restriction)

  12. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION Project Needs • Need to Replace Deteriorated Structure • Safety – Current Code (Loads, Widths, Barriers, etc.) • Get In – Get Out – Stay Out

  13. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION Project Wants • Want to Avoid Right of Way Acquisition – Highest Priority • Want to Minimize Permitting & Utility Issues – Secondary Priority • Want Most Cost Effective Solution – Lowest Priority

  14. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION Design Direction • Leave Existing Abutments for Scour Protection & Minimize Stream Impacts • Maintain Low Chord/Road Profile • 24’ Clear Roadway Width (Design Exception Documented) • Reinforced Precast Concrete Slabs • Cast-in-Place Concrete Abutments on Micro-Piles.

  15. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  16. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  17. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  18. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION • Performance Specification for Pile Foundation

  19. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  20. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  21. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  22. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  23. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  24. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  25. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  26. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION

  27. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION Conclusions • Total Project Cost ≈ $500,000 • Total Project duration < 12 Months • Avoided ROW Issues by Discussing Project with Adjacent Property Owners • Achieved Project Purpose

  28. DEPARTMENT OF PUBLIC WORKSBUREAU OF ENGINEERING & CONSTRUCTIONSTRUCTURAL DESIGN SECTION QUESTIONS??? Teamwork