1. Comparative Study of Codes for the Design of Composite Decks and Plate Girders for Bridges and Buildings By Venkata S. Vemana For CIVL 511 – April 9 2009

2. Outline Introduction General Comparison Comparison for Composite Decks Comparison for Plate Girders Design Examples Comparison of Codes by Vemana10/23/20152 of 15

3. Composite Decks Comparison of Codes by Vemana10/23/20153 of 15

4. Plate Girders Comparison of Codes by Vemana10/23/20154 of 15

5. General Comparison Building Code CAN/CSA S16.01 Bridge Code CHBDC S6.06 Comparison of Codes by Vemana10/23/20155 of 15

6. CHBDC S6.06 Larger resistance factors   r  Specific to bridges: fatigue, longer spans General Comparison Building Code CAN/CSA S16.01 Lower resistance factors   r  More general application Bridge Code Comparison of Codes by Vemana10/23/20156 of 15

7. Composite Decks Building Code Ribbed and solid slabs Bridge Code Solid slabs only Comparison of Codes by Vemana10/23/20157 of 15

8. Solid slabs only Composite action for negative moment under certain conditions Considers rebar in deck Composite Decks Building Code Ribbed and solid slabs Composite action only in positive moment (top compression) Ignores rebar in concrete Bridge Code C T C T Comparison of Codes by Vemana10/23/20158 of 15

9. Solid slabs only Composite action for negative moment under certain conditions Considers rebar in deck Separate capacity for Class 3/plate girders Composite Decks Building Code Ribbed and solid slabs Composite action only in positive moment (top compression) Ignores rebar in concrete No distinction between steel section class Bridge Code Comparison of Codes by Vemana10/23/20159 of 15

10. Composite Decks Building Code Allows partial shear connection Bridge Code Partial shear connection not allowed Comparison of Codes by Vemana10/23/201510 of 15

11. Composite Decks Building Code Allows partial shear connection No special fatigue consideration Channel connectors: lower resistance Bridge Code Partial shear connection not allowed Fatigue considerations for shear stud connectors Channel connectors: higher resistance Comparison of Codes by Vemana10/23/201511 of 15

12. Plate Girders Building Code Longitudinal stiffeners not addressed Detailed consideration of openings More lenient proportioning Bridge Code Both types of stiffeners are common Openings not considered Conservative width-to-thickness ratios Comparison of Codes by Vemana10/23/201512 of 15

13. Design Example Composite Deck Courtesy of Dr. Stiemer 10/23/2015Comparison of Codes by Vemana13 of 15

14. Design Example Plate Girder Courtesy of Dr. Stiemer 10/23/2015Comparison of Codes by Vemana14 of 15

15. Thank You Questions?