AISI S912
Full Name
AISI S912 – Test Standard for Determining the Strength of a Roof Panel-to-Purlin-to-Anchorage Device Connection
Scope
The American Iron and Steel Institute (AISI) has developed AISI S912 as a standardized test method for evaluating the strength of roof panel-to-purlin-to-anchorage device connections. This test is crucial for ensuring the structural integrity and wind uplift resistance of metal roof systems, particularly in regions prone to high winds or extreme weather events.
AISI S912 focuses on determining the ultimate strength and failure mode of the connection between a metal roof panel, the supporting purlin, and the anchorage device securing the purlin to the building’s structural framework. The standard outlines specific procedures for conducting the test, including specimen preparation, loading protocols, and data analysis.
The test setup involves a representative section of the roof assembly, including the panel, purlin, and anchorage device, mounted on a test frame. The assembly is subjected to a controlled uplift force simulating wind loads. The test continues until failure occurs, which can be characterized by:
- Panel failure: fracture or yielding of the roof panel material.
- Purlin failure: bending, yielding, or fracture of the purlin.
- Fastener failure: shear or tensile failure of screws, clips, or other fasteners connecting the components.
- Anchorage failure: pullout or failure of the anchorage device securing the purlin to the structure.
The test results provide valuable data on the ultimate strength of the connection, expressed as the maximum uplift force resisted before failure. This information is essential for engineers and designers to:
- Verify design assumptions: ensure that the chosen connection details meet the required wind load resistance for a specific geographic location.
- Optimize connection design: identify potential weaknesses and improve the connection’s strength and performance.
- Compare different connection systems: evaluate the relative performance of various connection types and select the most suitable option for a given application.
Compliance with AISI S912 provides several benefits, including:
- Enhanced safety: ensures the structural integrity of metal roof systems, protecting occupants and property from wind damage.
- Improved reliability: reduces the risk of roof failures and costly repairs.
- Increased confidence: provides assurance that the roof system meets industry standards and building code requirements.
- Competitive advantage: demonstrates a commitment to quality and performance for manufacturers and installers.
Our laboratory is equipped to conduct AISI S912 testing in accordance with the standard’s requirements. We have experienced technicians and state-of-the-art equipment to accurately simulate wind uplift loads and analyze connection performance.
AISI S912 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the AISI S912 standard.
Contact us today to learn more about our testing services and how we can assist you in ensuring the safety and performance of your metal roof systems.
Resources
Keywords
strength; roof panel; purlin; anchorage; connection; failure load; ultimate load; deflection; yield; shear; tension; fastener; clip; screw; weld