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Beam Column for Double Channels
Holes centered at mid-depth of web.
End Moment Coefficient C m: 1). Cm = 0.85, for compression members in frames subject to joint translation (sideway) 2). Cm = 0.6 - 0.4 (M1 / M2) , for restrained compression members in frames braced against joint translation, not subject to transverse loading. M1 - the smaller moment, M1 / M2 is positive when the member is bent in reverse curvature 3). For compression members in frames braced against joint translation, and subject to transverse loading Cm = 0.85, for members whose ends are restrained Cm = 1.0, for members whose ends are un-restrained
Results kx. Lx/ rx = ky. Ly/ ry = Pf / (fc . Pn)+Cmx. Mfx / (fb . Mnx . ax) + Cmy. Mfy / (fb . Mny . ay) Pf / (fc . Pn0) + Mfx / (fb . Mnx ) + Mfy / (fb . Mny ) =
Pf = kN kN.m Mfy = kN.m Loading Mfx =
Holes on Web dh = mm Lh = mm
Member Information Lx = mm mm Ly = Kx = Ky = Cmx = Cmy = Cb = Lt = mm s = mm
R = mm A' = mm t = mm B' = mm Fy = MPa C' = mm Section Information
For continuous lateral and torsional bracing of compression flange, assume: L t ≤ A' Beam Column for Double ChannelsReview Report 
Moment Profile C b = 12.5 Mmax / [2.5 Mmax + 3 MA + 4 MB + 3 MC ] Mmax - absolute value of maximum moment MA - absolute value of moment at quarter point MB - absolute value of moment at centerline MC - absolute value of moment at three-quarter point