ICC-ES AC497
Full Name
ICC-ES AC497 – Acceptance Criteria for Under-floor Space Continuous Perimeter Vents
Scope
ICC-ES AC497 outlines the acceptance criteria for evaluating continuous perimeter vents designed for under-floor spaces in buildings. These vents are crucial for maintaining proper ventilation and moisture control in crawl spaces and basements.
The scope of AC497 encompasses:
- Material evaluation: it provides guidelines for assessing the suitability of various materials, such as composite materials (calcium carbonate, plastic, and polyolefin resin), for constructing under-floor vents.
- Performance requirements: it specifies minimum performance criteria for ventilation efficiency, resistance to pests and debris, structural integrity, and durability under various environmental conditions.
- Testing procedures: it details the standardized test methods for evaluating the vent’s performance, including airflow tests, resistance to water penetration, and structural load tests.
- Installation requirements: it offers guidance on proper installation practices to ensure the vents function effectively and meet building code requirements.
By adhering to AC497, manufacturers and builders can ensure that under-floor space continuous perimeter vents meet the necessary performance and safety requirements, contributing to a healthy and durable building envelope.
Resources
Keywords
acceptance criteria; under-floor space; continuous perimeter vents; ventilation; composite material; calcium carbonate; plastic; polyolefin resin; sill plate; concrete foundation; masonry foundation; airflow; water penetration resistance; structural load