AISC LRFD 1.pdf

TABLE OF CONTENTSxiCOMMENTARY (Cont’d)A3. Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1671. Structural Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . 1673. Bolts, Washers, and Nuts . . . . . . . . . . . . . . . . . . . . . . 1694. Anchor Rods and Threaded Rods . . . . . . . . . . . . . . . . . . 1705. Filler Metal and Flux for Welding . . . . . . . . . . . . . . . . . . 170A4. Loads and Load Combinations . . . . . . . . . . . . . . . . . . . . . . 171A5. Design Basis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1721. Required Strength at Factored Loads . . . . . . . . . . . . . . . . 1722. Limit States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1723. Design for Strength . . . . . . . . . . . . . . . . . . . . . . . . . 1724. Design for Serviceability and Other Considerations . . . . . . . . 176B. DESIGN REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . 177B2. Net Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177B3. Effective Area of Tension Members . . . . . . . . . . . . . . . . . . . 177B5. Local Buckling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179B7. Limiting Slenderness Ratios . . . . . . . . . . . . . . . . . . . . . . . 182C. FRAMES AND OTHER STRUCTURES . . . . . . . . . . . . . . . . . . 184C1. Second Order Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . 184C2. Frame Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188C3. Stability Bracing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1951. Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1953. Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1984. Beams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199D. TENSION MEMBERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202D1. Design Tensile Strength. . . . . . . . . . . . . . . . . . . . . . . . . . 202D2. Built-Up Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202D3. Pin-Connected Members and Eyebars . . . . . . . . . . . . . . . . . . 202E. COLUMNS AND OTHER COMPRESSION MEMBERS. . . . . . . . . 203E1. Effective Length and Slenderness Limitations. . . . . . . . . . . . . . 2031. Effective Length . . . . . . . . . . . . . . . . . . . . . . . . . . . 2032. Design by Plastic Analysis . . . . . . . . . . . . . . . . . . . . . 203E2. Design Compressive Strength for Flexural Buckling. . . . . . . . . . . 203E3. Design Compressive Strength for Flexural-Torsional Buckling . . . . . 204E4. Built-Up Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205F. BEAMS AND OTHER FLEXURAL MEMBERS. . . . . . . . . . . . . . 206F1. Design for Flexure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2061. Yielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2062. Lateral-Torsional Buckling . . . . . . . . . . . . . . . . . . . . . 2063. Design by Plastic Analysis. . . . . . . . . . . . . . . . . . . . . . 209F2. Design for Shear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210F4. Beams and Girders with Web Openings . . . . . . . . . . . . . . . . . 210H. MEMBERS UNDER COMBINED FORCES AND TORSION . . . . . . 212H1. Symmetric Members Subject to Bending and Axial Force. . . . . . . . 212H2. Unsymmetric Members and Members Under Torsion andCombined Torsion, Flexure, Shear, and/or Axial Force . . . . . . . . . 213LRFD Specification for Structural Steel Buildings, December 27, 1999AMERICAN INSTITUTE OF STEEL CONSTRUCTION