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Design of Steel Structural

Design of Steel Structural . 803459-3. Mohammed Alsabban. masabban@uqu.edu.sa Office : 1153 Ext. 1142 Mobile 0-5555-10-233 Office Hours: Sun 8am:10am Tue 11am:12 noon Wed 5pm:6pm. Text. Book: Structural Steel Design Authors: Jack C. McCormac and Stephen F. Csernak

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Design of Steel Structural

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  1. Design of Steel Structural 803459-3

  2. Mohammed Alsabban • masabban@uqu.edu.sa • Office : 1153 • Ext. 1142 • Mobile 0-5555-10-233 • Office Hours: • Sun 8am:10am • Tue 11am:12 noon • Wed 5pm:6pm

  3. Text • Book: Structural Steel Design • Authors: • Jack C. McCormac and • Stephen F. Csernak • Publisher: Pearson • Edition: Fifth (International) • Year: 2012

  4. Manual • 14th edition of the Steel Construction Manual (AISCM) • Based on the 2010 Specification for Structural Steel Buildings (ANSI / AISC 360-10), (AISCS)

  5. Structural Steel Advantages • Great Strength • Light weight • Ease of fabrication • Uniformity • Elasticity • Permanence • Ductility • Toughness • Additions to existing structures • Ability to be fastened together by several simple connectors • Adaptation to prefabrication • Speed of erection • Ability to be rolled into wide variety of sizes and shapes • Reuse • Scrap value Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 10

  6. Structural Steel Disadvantages • Corrosion • Fireproofing Cost • Susceptibility to buckling • Fatigue • Brittle fracture Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 11

  7. Effect of temperature on yield strength Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 12

  8. First Completely Framed with Structural Steel Building Historical Note Completed in Chicago in 1890 Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 13

  9. Rolled-steel shapes Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 14

  10. Cold-formed shapes Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 15

  11. Concrete floor slabs • Cast on formed steel decks Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 16

  12. Metric Units • The metric equivalents of the standard U.S. shapes are provided in section 17 of AISCM • W920 X 449 means 920 mm deep and weight 449 kg/m Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 17

  13. Stress-Strain Relationships • Typical stress-strain diagram for mild or low-carbon structural steel at room temperature Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 18

  14. Stress-Strain Relationships • Typical stress-strain curves Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 19

  15. Brittle steel • Typical stress-strain diagram for brittle steel Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 20

  16. ASTM Specification for Structural Shapes Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 21

  17. Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 22

  18. Part of detail drawing Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 23

  19. Part of erection drawing Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 24

  20. Responsibilities of the Structural Designer • Safety • Safely support loads • Control deflection • Control vibrations • Cost • Standard size members • Simple connections and details • Low cost maintenance • Constructability • Learn detailing • Learnt fabrication • Learn erection of steel Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 25

  21. Building Code and Specifications • Must refer to Building Code and Specifications • Local Building Code and Rules of Municipalities • AISCS will be used for Structural steel Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 26

  22. Loads • Accurate estimation • Worst possible combinations • If no local code  use ASCE 7 (ANSI 58.1 Standards) Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 27

  23. Dead Loads • Other are found in part 17 of AISCM Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 28

  24. Live Loads • Typical minimum uniform table (p.55) Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 29

  25. Live Loads • Typical Concentrated Live Loads table 2.3 p55 Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 30

  26. Impact • Impact factor(p. 56) Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 31

  27. Environmental Loads • Snow • Rain • Wind • Earthquake Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 32

  28. Two Design Methods • LRFD (Load and Resistance Factor Design) • Reduction factor φ • Nominal Strength Rn • Computed factored force Ru • φRn ≥ Ru • ASD (Allowable Strength Design) • Safety factor Ω • Largest computed force Ra • ≥ Ra Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 33

  29. Combined Loads

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