Chapter 4 Design of Tension Members Structural Steel Design, Fifth Edition, McCormac and Csernak,...
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Transcript of Chapter 4 Design of Tension Members Structural Steel Design, Fifth Edition, McCormac and Csernak,...
Chapter 4
Design of Tension Members
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 1
Selection of Sections
• Loads to be carried• Compactness• Fit with other members• Maximum connectability
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 2
Bolted connection probable section:
• Angles• Channels• W or S sections
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 3
Welded connection probable section:
• Plates• Channels• Structural Tees
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 4
Code requirements to be checked
Additional Code Requirement
• AISCS D.1 : L / r < 300 – Ratio of unsupported length to least radius of
gyration– Enough stiffness to control deflection and
vibration– Not for rods
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 6
Design process: (trial-and-error)
1. Estimate required area2. Select a section from the AISCM Aprovided
3. Check the section's strength4. May try a slightly larger or slightly smaller
section as required5. Repeat the checking process
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 7
• Consider , then• Gross area required: minimum of
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 8
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 9
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 10
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 11
ASD Approach
Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 12
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Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 20