ICC-ES AC455
Full Name
ICC-ES AC455 – Acceptance Criteria for Cross-laminated Timber Panels for Use as Components in Walls, Floors and Roofs
Scope
ICC-ES AC455 outlines the acceptance criteria for evaluating cross-laminated timber (CLT) panels for use as structural components in walls, floors, and roofs. ICC-ES AC455 is intended for manufacturers seeking approval for their CLT panels under the ICC-ES evaluation report program.
The scope of AC455 covers:
- Materials: defines the acceptable types of wood species, adhesives, and manufacturing processes for CLT panels.
- Performance requirements: specifies the structural, fire resistance, and durability requirements that CLT panels must meet for use in different building applications. This includes criteria for strength, stiffness, shear resistance, fire rating, and moisture resistance.
- Test methods: outlines the specific tests and procedures to be followed to evaluate the performance and compliance of CLT panels with the specified criteria. This includes tests for mechanical properties, fire resistance, and durability.
- Quality control: details the quality control measures that manufacturers must have in place to ensure consistent product quality and compliance with the acceptance criteria. This includes requirements for material testing, production monitoring, and record-keeping.
- Design considerations: provides guidance on design considerations for using CLT panels in building construction, including connection details, load distribution, and lateral bracing.
Resources
Keywords
cross-laminated timber; CLT panels; acceptance criteria; evaluation report; performance requirements; test methods; quality control; walls; floors; roofs; structural; fire resistance; durability; strength; stiffness; shear resistance; fire rating; moisture resistance