PIN-CONNECTED MEMBERS An example of a pin-connected member is given in Example D.7. BUILT-UP MEMBERS The limitations for connections of built-up members are discussed in Section D4 of the AISCД5. The appropriate values of can be obtained from Table D3.1 of the AISC. Unless all elements of the cross section are connected, =, where is a reduction factor to account for shear lag. be added to the bolt holeДЄ computation of the effective area for a chain of holes is presented in Example D.9. Section B4.3 requires that an extra z in. Is the total cross-sectional area of the member. If the actual effective area is less than 0.75, the tabulated values will be unconservative and calculations are necessary to determine the available strength. If the actual effective area is greater than 0.75, the tabulated values will be conservative and calculations can be performed to obtain higher available strengths. The calculations in these tables for available tensile rupture strength assume an effective area,, of 0.75. For preliminary design, tables are provided in Part 5 of the AISC for W-shapes, L-shapes, WT-shapes, rectangular HSS, square HSS, round HSS, Pipe and 2L-shapes.

It is not unusual for tensile rupture strength to govern the design of a tension member, particularly for small members with holes or heavier sections with multiple rows of holes. TENSILE STRENGTH Both tensile yielding strength and tensile rupture strength must be considered for the design of tension members. Rods and hangers are specifically excluded from this recommendation. SLENDERNESS LIMITATIONS Section D1 does not establish a slenderness limit for tension members, but recommends limiting / to a maximum of 300.

LOADS AND LOAD COMBINATIONSД®XAMPLE C.1A DESIGN OF A MOMENT FRAME BY THE DIRECT ANALYSIS METHOD Given:Д®XAMPLE C.1B DESIGN OF A MOMENT FRAME BY THE EFFECTIVE LENGTH METHODД®XAMPLE C.1C DESIGN OF A MOMENT FRAME BY THE FIRST-ORDER METHODД1. STRUCTURAL DESIGN DRAWINGS AND SPECIFICATIONSД«1. REFERENCED SPECIFICATIONS, CODES AND STANDARDSДЄ4. DESIGN OF MEMBERS FOR COMBINED FORCES AND TORSIONД¬HAPTER IIB FULLY RESTRAINED (FR) MOMENT CONNECTIONSД¬HAPTER IIC BRACING AND TRUSS CONNECTIONSДЄ2.

Aisc design example v14