IThis Standard defines requirements for a certain
type of hybrid special moment frame composed of precast
concrete beams jointed at their connections to columns
that are continuous past those joints. Whereas these frames
do not satisfy all of the prescriptive requirements of 21.5
through 21.7 of ACI 318-11, analyses, tests, and reporting
requirements in accordance with ACI 374.1 have established
dependable and predictable strength, energy dissipation,
stiffness, and drift capacities for characteristic beam-column
configurations of the frames described in this Standard. Such
special moment frames are permitted for structures assigned
to SDC D, E, or F in accordance with 21.8.4 of ACI 318-11.