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Www.transportation.ohio.gov John R. Kasich, GovernorJerry Wray, Director Ohio Department of Transportation 2011 Conaway Conference Structures Update.

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Presentation on theme: "Www.transportation.ohio.gov John R. Kasich, GovernorJerry Wray, Director Ohio Department of Transportation 2011 Conaway Conference Structures Update."— Presentation transcript:

1 John R. Kasich, GovernorJerry Wray, Director Ohio Department of Transportation 2011 Conaway Conference Structures Update

2 Deck Placement Control Elevations July 2008 BDM Changes - Plans provide: Screed Elevations ( to set finished surface) –Curblines (barrier) or Deck edges –Profile grade lines (not over beams) –Transverse grade-break lines –Phased construction lines Top of Haunch Elevations –Centerline of each girder (to set forms) Final Deck Surface Elevations Conaway Conference

3 Deck Placement Control Elevations SCREED ELEVATIONS represent the theoretical deck surface location prior to deflections caused by deck placement and other anticipated dead loads. TOP OF HAUNCH ELEVATIONS represent the theoretical location of the bottom of the deck above the beam/girder haunch prior to deflections caused by deck placement and other anticipated dead loads. Haunch Fills = Top of Haunch Elev. – Surveyed Beam Elev Conaway Conference

4 Deck Placement Control Elevations FINAL DECK SURFACE ELEVATIONS shown represent the deck surface location after all anticipated dead load deflections have occurred. DIFFERENTIAL DEFLECTION The primary reason for eliminating screed elevations from above each beam/girder line was differential deflection between beam/girders Conaway Conference

5 Deck Placement Control Elevations Conaway Conference

6 Deck Placement Control Elevations Causes of Differential Deflection Variations in one of the following three variables will affect the amount of beam/girder deflection that occurs due to the wet weight of concrete at each screed cross-section: –Span length of each beam/girders. –Magnitude of concrete load applied to each beam/girder. –Size of each beam/girder cross-section Conaway Conference

7 PN 525 Steel Price Adjustment Changes in 7/17/2009 from 8/2/2004 Version -Eliminated Cost Basis(Index) -Changed indices for Structural Steel Members, Levels UF, 1, 2, and 3 and Steel H-Piling (with average of lowest and highest 27 to 36 tall, wide flange beams up to 256 lbs./ft. from Nucor-Yamato, SDI, and Gerdau-Ameristeel -Total steel price adjustment (SPA) would not be computed unless the percent (%) change was 10% or more, (had been 5% change). -Put into four categories Conaway Conference

8 PN 525 Steel Price Adjustment 1/15/2010 and 4/16/2010 Versions Simplified to just two categories Category 1: Structural Steel Members, Levels UF 1,2 &3 and Steel H-Piling –Based on average of lowest & highest 27 to 36 tall wide flange beams from 3 suppliers Category 2: Structural Steel Members, Levels 4,5 &6 and Stay-in-Place casing -Based on AMM Steel Plate indices Guardrail, traffic & light poles, corrugated metal pipe, expansion joints, bearings, pre-stressed and post tensioning strand & reinforcing steel eliminated Conaway Conference

9 PN 525 Steel Price Adjustment 1/15/2010 and 4/16/2010 Versions Will have new calculator available for new Steel Price Adjustment Proposal Note versions. Just need Project number, County, Route & Section, Project letting date, Completion date, Reference Number, Date Shipped from Mill, Pounds of Steel shipped Conaway Conference

10 Sealing of Concrete Surfaces Measure sealing of concrete surfaces by the number of square yards of coated area projected to a 2- dimensional surface Documentation – New CA-S-21 Form New Work Type 57 for Sealing of Concrete Surfaces Contractors should have had training Came up with new pay item for Removal of Existing Coating (S.Y.) Remove existing coatings completely Ensure that all wastes generated by surface preparation operation are managed to prevent discharge Conaway Conference

11 514 Structural Steel Painting Duties of the QCS: 1.Inspect equipment and abrasive at specified intervals 2.Approve the work and provide documentation that the work has been approved immediately before the QCP 3. Inspect the work with the Engineer or his representative at all QCP. 4. Verify the Contractor or fabricator performed work according to the work requirements. 5. Cooperate with the inspection and testing performed by the Engineer and inspector. 6. Document test results and compare test results with the inspectors test results. 7. Notify the foreman of nonconforming work. 8. Stop work when test equipment is not available and when necessary to ensure the work is performed according to the Contract Conaway Conference

12 514 Structural Steel Painting Quality Control Points (QCP): QCPs are points in time when one phase of the work is complete and approved by the quality control specialist and ready for inspection by the Engineer before continuing with the next phase of work Conaway Conference

13 514 Structural Steel Painting At a QCP, the quality control specialist or fabricator shall provide quality control tests bearing their signature to the Engineer.(CA-S- 7 QCS Inspection Documentation Form) The Contractor or fabricator shall provide the Engineer and inspectors access to inspect all affected surfaces. If inspection identifies a deficiency, correct the deficiency according to the Contract Documents before starting the next phase of work Conaway Conference

14 514 Structural Steel Painting 14 At each Quality Control Point, the QCS must inspect, then sign this form stating that the work is in complete compliance and ready for inspection by the owners inspector Conaway Conference

15 514 Structural Steel Painting Owners Inspectors Duties Under Documentation Requirements- 514 Field Painting of Structural Steel from 2009 Construction Inspection Manual of Procedures, the inspector is required to: 1.Document Dry Film Thickness readings on Form CA-S-2 2.Ensure that the QCS fills out and signs the CA-S-7 Form prior to all Quality Control Point Inspections 3.Document the QCSs information and Job Site Visual Standards on Form CA-S-11 4.Document Solvent Cleaning(QCP#1) and Grinding of Flange Edges (QCP#2) on Form CA-S-12 5.Document Abrasive Blasting (QCP#3) on Form CA-S Conaway Conference

16 514 Structural Steel Painting Owners Inspectors Duties 6. Document Waste Disposal (QCP#4) on Form CA-S-14 7.Document Prime Coat Application (QCP#5) on Forms CA- S-15 and CA-S-2 8.Document Grinding Fins, Tears, and Slivers (QCP#6) and Caulking (QCP#9) on From CA-S-16 9.Document Intermediate Coat Application (QCP#8) and Finish Coat Application (QCP#10) on Forms CA-S-17 and CA-S-2 10.Document the Final Destructive Tests on Form CA-S Document the Final Review (QCP#11) on Form CA-S-19 The owners inspector needs to make independent checks of the QCSs readings and results Conaway Conference


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