• In T-Beam construction, effective flange width is determined an applied automatically.

International Design Codes

ACI 318-19 : Beam Stability

TSC 2018 :


bf = effective flange width, in.
bw = web width or diameter of circular section, in.
h = overall thickness, height, or depth of member, in.
ln = length of clear span measured face-to-face of supports, in.
sw = 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.