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

Structural Steel Design, Fifth Edition, McCormac and Csernak , 2012 (International. 1. Tension members are found in: Bridge trusses, Roof trusses, Towers, Bracing systems As tie rods. Structural Steel Design, Fifth Edition, McCormac and Csernak , 2012 (International. 2.

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

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  1. Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 1

  2. Tension members are found in: • Bridge trusses, • Roof trusses, • Towers, • Bracing systems • As tie rods Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 2

  3. Types of Tension Members • Circular Rods • One of the simplest of tension members • Difficult to connect to many structures • Single Angles ( used in roof trusses) • Double angles • Tees (used in welded trusses) • Channels (Bridges and large roof trusses) • W sections (Bridges and large roof trusses) • Built up from plates and rolled shapes ( to have sufficient cross-sectional area and rigidity) Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 3

  4. Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 4

  5. Members consisting of more than one section need to be tied together. • Tie plates or tie bars are used to tie them Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 5

  6. Steel cables are tension members • in suspension bridges • as roof supports • Strength of about 200,00 to 250,000 psi Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 6

  7. Gross section • AISC Specification (D2) • Nominal Strength of a tension member Pn Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 7

  8. Net section • Bolt holes = D + 1/8 • Nominal Strength of a tension member Pn Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 8

  9. Net Area Calculations Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 9

  10. Avoid eccentricities Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 10

  11. Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 11

  12. Quantity added for inclined lines • Empirical equation, AISCS (B4.3b) • S is the pitch (distance c-t-c parallel to Tension) • g is the gage (distanc c-t-c perpendicular to Tension) Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 12

  13. Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 13

  14. Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 14

  15. Structural Steel Design, Fifth Edition, McCormac and Csernak, 2012 (International 15

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