ICC-ES AC205
Full Name
ICC-ES AC205 – Acceptance Criteria for Dynamic Seismic Retrofit Systems for Masonry Structures
Scope
ICC-ES AC205 defines the acceptance criteria for evaluating dynamic seismic retrofit systems (SRS-MS) specifically designed for masonry structures. These retrofit systems are intended for use in Seismic Zones 3 and 4, as defined in the UBC, and Seismic Design Categories D, E, and F, as defined in the IBC.
The criteria primarily focus on evaluating the retrofit systems’ ability to enhance the seismic performance of existing masonry buildings, reducing the risk of damage or collapse during earthquakes.
Key aspects covered by AC205 include:
- System components: identifying the various components of the retrofit system, such as anchors, connectors, reinforcing elements, and energy dissipation devices.
- Material properties: specifying requirements for the materials used in the retrofit system, ensuring their strength, durability, and compatibility with the existing masonry structure.
- Design and analysis: outlining the procedures for designing and analyzing the retrofit system, including considerations for load paths, connection details, and the interaction between the retrofit and the existing structure.
- Testing and verification: requiring physical testing of the retrofit system components and assemblies to verify their performance under simulated seismic loads, ensuring compliance with performance objectives.
- Installation guidelines: providing recommendations for proper installation of the retrofit system to ensure its effectiveness in improving the seismic performance of the building.
By adhering to AC205, manufacturers and engineers can demonstrate that their seismic retrofit systems meet the necessary standards for safety and effectiveness, providing building owners and officials with confidence in their use for upgrading the seismic resilience of masonry structures.
Resources
Keywords
seismic retrofit systems; masonry structures; acceptance criteria; seismic zones; seismic design categories; anchors; connectors; reinforcing elements; energy dissipation devices; load paths; connection details