Minimum beam depth is controlled automatically.
Deflection limits is controlled automatically.
International Design Codes
ACI 318-19 : Beam Design Limits
TSC 2018 : Dimensional Limit Conditions for Beams
Ag = gross area of concrete section, in2
bf = effective flange width, in.
bw = web width or diameter of circular section, in.
c1 = dimension of rectangular or equivalent rectangular column, capital, or bracket measured in the direction of the span for which moments are being determined, in.
c2 = dimension of rectangular or equivalent rectangular column, capital, or bracket measured in the direction perpendicular to c1, in.
Ec = modulus of elasticity of concrete, psi
Es = modulus of elasticity of reinforcement, psi
fc' = specified compressive strength of concrete, psi
fy = specified yield strength for nonprestressed reinforcement, psi
h = overall thickness, height, or depth of member, in.
l = span length of beam or one-way slab; clear projection of cantilever, in.
ln = length of clear span measured face-to-face of supports, in.
Pu = factored axial force; to be taken as positive for compression and negative for tension, lb
sw = clear distance between adjacent webs, in.
ϕ = strength reduction factor