Overview of ANSI/PCI 150-24-Overview of ANSI_PCI 150-24 Presentation Handout

Overview of ANSI_PCI 150-24 Presentation Handout

Pdf Summary

This presentation provides a comprehensive overview of ANSI/PCI 150-24, the Specification for the Design of Precast Concrete Insulated Wall Panels (PIWPs). The standard sets minimum requirements for designing prestressed or non-prestressed precast insulated wall panels, covering aspects such as composite action, wythe connectors, reinforcement, strength and serviceability evaluation, earthquake resistance, temperature effects, and fire resistance. <br /><br />The webinar begins with the historical evolution and development of the standard, highlighting earlier publications leading up to the 2024 specification. It discusses the complexity of wythe connectors, which come in various materials (concrete, metal, reinforced polymer) and thermal conductivities, and the challenges in creating uniform testing rules for these diverse types.<br /><br />Key benefits of PIWPs include efficiency in thermal and structural performance, durability with low maintenance, safety and resilience suitable for storm shelters and industrial uses, and sustainability via lifecycle cost benefits. The design approach involves detailed checks throughout the panel lifecycle, with stress limits differing before and after cracking, and design methods ranging from finite-element analyses to simplified calculations based on composite action.<br /><br />Seismic design considerations are addressed for both in-plane and out-of-plane forces, emphasizing the role of wythe boundary conditions and load sharing, especially in higher seismic categories. Fire resistance and temperature-induced bowing effects are also incorporated into the standard.<br /><br />The presentation notes the limitations of the first edition of the standard, such as the absence of a wythe connector testing protocol and some open research questions regarding composite action and load distribution. Future developments aim to establish standardized wythe connector testing, update analysis methods, consider time-dependent material changes, and improve understanding of durability and concrete-insulation bonding.<br /><br />Overall, the webinar emphasized the collaborative effort of experts and PCI staff to develop a robust, consensus-based design standard for precast insulated wall panels, promoting efficient, safe, and sustainable building practices.

Keywords

ANSI/PCI 150-24

Precast Concrete Insulated Wall Panels

PIWPs

Wythe Connectors

Composite Action

Seismic Design

Fire Resistance

Thermal Performance

Durability and Sustainability

Finite-Element Analysis