Beam Stability.

International Design Codes

ACI 318-19 : Beam Stability per ACI 318-19 with ideCAD

TSC 2018 :

Notation

b_f = effective flange width, in.
b_w = web width or diameter of circular section, in.
h = overall thickness, height, or depth of member, in.
l_n = length of clear span measured face-to-face of supports, in.
s_w = clear distance between adjacent webs, in.

In nonprestressed T-Beam monolithic concrete construction, effective flange width_, equlas to the beam width plus an effective overhanging flange width in accordance with Codes.

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