421.2R-10: Guide to Seismic Design of Punching Shear Reinforcement in Flat Plates

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Title: 421.2R-10: Guide to Seismic Design of Punching Shear Reinforcement in Flat Plates

Author(s): Joint ACI-ASCE Committee 421

Publication: Technical Documents

Volume:

Issue:

Appears on pages(s): 30

Keywords: ductility; flat plate; post-tensioning; punching shear; seismic design; shear reinforcement; stud shear reinforcement.

Date: 4/1/2010

Abstract:
During an earthquake, the unbalanced moments transferred at flat plate-column connections can produce significant shear stresses that increase the vulnerability of these connections to brittle punching shear failure. This guide provides recommendations for designing flat plate-column connections with sufficient ductility to withstand lateral drift without punching shear failure or loss of moment transfer capacity. This guide treats reinforced concrete flat plates with or without post-tensioning.