1. Design of Steel Structural

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

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

9. Topics Covered During Class
S/N
Topic title
Lecture Hours
Weeks
(Equivalent) 1
Introduction to Structural Steel Design 2
0.67
Specifications, Loads, and Methods of Design
0.33 3
Analysis of Tension Members 4
Design of Tension Members 5
Intro to Axially Loaded Compression Members
First Term Exam 6
Design of Axially Loaded Compression Members 7
Design of Axially Loaded Compression Members (Continued) and Column Base Plates 8
Introduction to Beams
Second Term Exam 9
Design of Beams for Moments 10
Design of Beams-Miscellaneous Topics (Shear, Deflection, etc) 11
Bending and Axial Force
Third Term Exam 12
Bolted Connections
0.66
Forth Term Exam 13
Eccentrically Loaded Bolted Connections and Historical Notes on Rivets 14
Welded Connections
Fifth Term Exam
Review
Final Examination
Total 45 15

10. 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
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11. Structural Steel Disadvantages Corrosion Fireproofing Cost
Susceptibility to buckling
Fatigue
Brittle fracture
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12. Effect of temperature on yield strength
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13. First Completely Framed with Structural Steel Building
Historical Note
First Completely Framed with Structural Steel Building
Completed in Chicago in 1890
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14. Rolled-steel shapes
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15. Cold-formed shapes
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16. Concrete floor slabs Cast on formed steel decks 16
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17. 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
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18. Stress-Strain Relationships
Typical stress-strain diagram for mild or low-carbon structural steel at room temperature
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19. Stress-Strain Relationships
Typical stress-strain curves
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20. Brittle steel Typical stress-strain diagram for brittle steel 20
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21. ASTM Specification for Structural Shapes
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22. Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International22

23. Part of detail drawing
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24. Part of erection drawing
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25. 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
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26. 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
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27. Loads Accurate estimation Worst possible combinations
If no local code  use ASCE 7 (ANSI 58.1 Standards)
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28. Dead Loads Other are found in part 17 of AISCM 28
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29. Live Loads Typical minimum uniform table (p.55) 29
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30. Live Loads Typical Concentrated Live Loads table 2.3 p55 30
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31. Impact Impact factor (p. 56) 31
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32. Environmental Loads Snow Rain Wind Earthquake 32
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 32

33. Two Design Methods LRFD (Load and Resistance Factor Design)
Reduction factor φ
Nominal Strength Rn
Computed factored force Ru
φ Rn ≥ Ru
ASD (Allowable Strength Design)
Safety factor Ω
Largest computed force Ra
𝑅 𝑛 Ω ≥ Ra
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34. Combined Loads