ICC-ES AC423
Full Name
ICC-ES AC423 – Acceptance Criteria for Raised-deck Systems Installed over Roof Assemblies or Exterior Supporting Structures
Scope
ICC-ES AC423 outlines the acceptance criteria for raised-deck systems installed over existing roof assemblies or exterior supporting structures. These systems are designed to create elevated outdoor living spaces on top of roofs or other structures.
The scope of AC423 includes:
- Materials: it specifies the requirements for the materials used in the raised-deck systems, including the decking, supports, fasteners, and waterproofing membranes.
- Design and construction: it details the design and construction requirements for the systems, addressing factors such as structural integrity, load capacity, drainage, and fire safety.
- Performance: it outlines the testing methods and acceptance criteria for evaluating the performance of the systems under various loads and conditions, including dead loads, live loads, wind loads, and seismic loads.
- Installation: it provides guidelines for the proper installation of the raised-deck systems, ensuring they are securely attached to the underlying structure and meet all safety and performance requirements.
- Maintenance: it may also include recommendations for the maintenance of the raised-deck systems to ensure their long-term durability and performance.
The AC423 acceptance criteria are used by manufacturers to obtain an evaluation report from ICC Evaluation Service (ICC-ES), which demonstrates that their raised-deck systems comply with the applicable building codes and standards.
Resources
Keywords
deck; raised deck; roof assembly; exterior supporting structure; acceptance criteria; decking; support; fastener; waterproofing membrane; structural integrity; load capacity; drainage; fire safety; dead load; live load; wind load; seismic load; installation; maintenance; building code; standard; evaluation report