Boundary element reinforcement at a maximum four foot six inch door opening in a concrete wall. The assembly is detailed with fourteen number five vertical reinforcing bars and a spacing of one and a half inches typical. Transverse confinement is provided by number four closed ties and number four crossed ties spaced at five inches on center over a three foot boundary zone.
3 4'-6" (MAX) DOOR OPENING SAD #4 CLOSED TIES @5" #4 CROSSED TIES @5" WALL REINF. PER WALL ELEVATION SEE B.E 3'-0" / 4 S5.05 (14)#5 1 1/2" TYP 6 EQ SPACING
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