Beam Column for Double Channels

Canadian Codes

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Holes centered at mid-depth of web.

End Moment Coefficient C_m: 1). C_m = 0.85, for compression members in frames subject to joint translation (sideway) 2). C_m = 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 C_m = 0.85, for members whose ends are restrained C_m = 1.0, for members whose ends are un-restrained

Results k_x. L_x/ r_x = k_y. L_y/ r_y = P_f / (f_c . P_n)+C_mx. M_fx / (f_b . M_nx . a_x) + C_my. M_fy / (f_b . M_ny . a_y) P_f / (f_c . P_n0) + M_fx / (f_b . M_nx ) + M_fy / (f_b . M_ny ) =

P_f = kN kN.m M_fy = kN.m Loading M_fx =

Holes on Web Circular Rectangular d_h = mm L_h = mm

Member Information L_x = mm mm L_y = K_x = K_y = C_mx = C_my = C_b = L_t = mm s = mm

R = mm A' = mm t = mm B' = mm F_y = MPa C' = mm Section Information with Lips Holes on Web ?

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 M_max / [2.5 M_max + 3 M_A + 4 M_B + 3 M_C ] M_max - absolute value of maximum moment M_A - absolute value of moment at quarter point M_B - absolute value of moment at centerline M_C - absolute value of moment at three-quarter point