# D1.F.4.6 Beam Design per ACI 318-11 and Earlier

Beams are designed for flexure, shear and torsion. For
all these forces, all active beam loadings are prescanned to locate the
possible critical sections. The total number of sections considered is 12
(twelve) unless this number is redefined with an
`NSECTION` parameter. All of these equally spaced sections
are scanned to determine moment and shear envelopes.