Overview of ANSI/PCI 150-24-ANSI

Video Transcription

Video Summary

The webinar, presented by structural engineer Alex Mikhailov and moderated by Leah James of PCI, offers an overview of ANSI PCI-150-24, the specification for designing precast concrete insulated wall panels. These panels combine structural support, durability, environmental resilience, and versatile architectural aesthetics, making them popular in construction. The standard provides consistent terminology, design methods, and minimum requirements for prestressed/non-prestressed panels, addressing components like concrete wythes, insulation, and proprietary wythe connectors of varying materials.<br /><br />The presentation covers the history of insulated wall panels, evolving from European residential usage to industrial U.S. applications, and highlights published research leading to consolidated design standards. Key technical topics include composite action degrees—full, partial, or non-composite—and their influence on structural behavior, with the beam spring method being the primary analysis tool. The standard also addresses reinforcement detailing, seismic design (noting unique challenges in seismic forces acting on wythes and connectors), temperature-induced bowing, and fire considerations (deferred to PCI 124).<br /><br />Limitations of the standard include the complexity in standardizing wythe connectors and evaluating long-term material durability. Ongoing updates, including PCI-155, aim to improve testing protocols, strength reduction factors, and time-dependent material properties. The session concludes with a Q&A addressing panel thickness, comparison with traditional design methods, benefits of symmetric wythes, and seismic behavior of proprietary connectors. Certificates of continuing education will be issued via RSAP.net.

Keywords

ANSI PCI-150-24

precast concrete insulated wall panels

structural engineering

prestressed panels

composite action

beam spring method

seismic design

wythe connectors

PCI continuing education