ACI 550.3 PDF

ACI 550.3 – Design Specification for Unbonded Post-tensioned Precast Concrete SPecial Moment Frames Satisfying ACI 374.1 (ACI 550.3-13) and Commentary

IThis Standard defines requirements for a certaintype of hybrid special moment frame composed of precastconcrete beams jointed at their connections to columnsthat are continuous past those joints. Whereas these framesdo not satisfy all of the prescriptive requirements of 21.5through 21.7 of ACI 318-11, analyses, tests, and reportingrequirements in accordance with ACI 374.1 have establisheddependable and predictable strength, energy dissipation,stiffness, and drift capacities for characteristic beam-columnconfigurations of the frames described in this Standard. Suchspecial moment frames are permitted for structures assignedto SDC D, E, or F in accordance with 21.8.4 of ACI 318-11.