Committee Home

550 - Precast Concrete Structures--Joint ACI-ASCE


Committee Mission: Develop and report information on precast concrete structures.

Goals: Update ACI 550.1R-09.

Chair: Suzanne Aultman

TAC Contact: Tracy Marcotte

Upcoming Open Meetings:
550 Virtual Meeting - 3/28/2021 3:00 PM-EST-5:00 PM-EST - GotoMeeting
ACI Spring Convention 2021 - 3/28/2021 3:00 PM-5:00 PM - Virtual

Access Meeting Platform

Published Committee Documents:
• ACI PRC-550.1-09: Guide to Emulating Cast-in-Place Detailing for Seismic Design of Precast Concrete Structures (Reapproved 2017)
• ACI PRC-550.2-13 Design Guide for Connections in Precast Jointed Systems
• ACI SPEC-550.3-13 Design Specification for Unbonded Post-Tensioned Precast Concrete Special Moment Frames Satisfying ACI 374.1
• ACI SPEC-550.3M-13 Design Specification for Unbonded Post-Tensioned Precast Concrete Special Moment Frames Satisfying ACI (Metric)
• ACI CODE-550.5-18:Code Requirements for the Design of Precast Concrete Diaphragms for Earthquake Motions (ACI 550.5) and Commentary (ACI 550.5R)
• ACI CODE-550.5M-18: Code Requirements for the Design of Precast Concrete Diaphragms for Earthquake Motions (Metric)
• ACI CODE-550.4-18: Qualification of Precast Concrete Diaphragm Connections and Reinforcement at Joints for Earthquake Loading (ACI 550.4-18) and Commentary (550.4R-18)
• ACI CODE-550.4M-18: Qualification of Precast Concrete Diaphragm Connections and Reinforcement at Joints for Earthquake Loading and Commentary
• ACI CODE-550.6-19: Acceptance Criteria for Special Unbonded Post-Tensioned Precast Structural Walls Based on Validation Testing and Commentary
• ACI CODE-550.6M-19: Acceptance Criteria for Special Unbonded Post-Tensioned Precast Structural Walls Based on Validation Testing and Commentary (SI Units)
• ACI CODE-550.6-19: Acceptance Criteria for Special Unbonded Post-Tensioned Precast Structural Walls Based on Validation Testing and Commentary
• ACI CODE-550.7-19: Requirements for Design of a Special Unbonded Post-Tensioned Precast Shear Wall Satisfying ACI 550.6 and Commentary
• ACI SPEC-550.3-13 Design Specification for Unbonded Post-Tensioned Precast Concrete Special Moment Frames Satisfying ACI 374.1
• ACI CODE-550.4-18: Qualification of Precast Concrete Diaphragm Connections and Reinforcement at Joints for Earthquake Loading (ACI 550.4-18) and Commentary
• ACI CODE-550.5-18:Code Requirements for the Design of Precast Concrete Diaphragms for Earthquake Motions (ACI 550.5) and Commentary (ACI 550.5R)

See all 550 Committee Documents...

Meeting Ballots

No Open Ballots

Work Folders (ACI)

Meeting Agenda & Approved Minutes
Meeting--October 25, 2020
Meeting--October 20, 2019
Meeting--March 24, 2019
Meeting--October 14, 2018
Meeting--March 25, 2018
Meeting--October 15, 2017
Meeting--March 26, 2017
Meeting--October 23, 2016
Meeting--April 17, 2016
Meeting--November 08, 2015
Meeting--April 12, 2015
Meeting--October 26, 2014
Meeting--February 27, 2014
Meeting--October 20, 2013
Meeting--April 14, 2013
Meeting--October 21, 2012
Meeting--March 18, 2012
Meeting--October 16, 2011
Meeting--April 03, 2011
Meeting--October 24, 2010
Meeting--March 21, 2010
Meeting--November 02, 2009
Meeting--March 17, 2009
Meeting--November 04, 2008
Meeting--April 01, 2008
Meeting--October 16, 2007
Meeting--April 24, 2007
Meeting--November 07, 2006
Meeting--March 28, 2006


Please enter this 5 digit unlock code on the web page.