AISI S914
Full Name
AISI S914 – Test Standard for Determining the Strength and Deformation Behavior of Joist Connectors Attached to Cold-Formed Steel Structural Framing
Scope
The American Iron and Steel Institute (AISI) has developed AISI S914, a standardized test method for evaluating the strength and deformation characteristics of joist connectors when attached to cold-formed steel (CFS) structural framing members. This standard is crucial for ensuring the reliability and safety of CFS framing systems, which are widely used in residential and light commercial construction.
AISI S914 focuses on determining the following properties of joist connectors:
- Tensile strength: the maximum tensile load a connector can withstand before failure.
- Shear strength: the maximum shear load a connector can withstand before failure.
- Deformation characteristics: how the connector deforms under load, including ductility and stiffness.
The standard outlines specific procedures for preparing test specimens, which typically involve attaching the joist connector to CFS members representing actual field conditions. The test setup utilizes a loading frame to apply either tensile or shear forces to the connector.
AISI S914 provides guidelines for analyzing the test data, including calculating load-displacement curves, determining ultimate strength values, and evaluating failure modes. The standard also specifies the format for reporting test results, ensuring consistency and clarity.
This standard plays an important role in:
- Product development: manufacturers can use AISI S914 to design and optimize joist connectors for improved performance.
- Quality control: manufacturers can ensure their products meet specified performance criteria.
- Building code compliance: building officials can rely on AISI S914 test results to verify the adequacy of CFS framing systems.
- Structural design: Engineers can use the data from AISI S914 tests to accurately model and analyze CFS structures.
AISI S914 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the AISI S914 standard.
Contact us today to learn more about how our testing services can help you achieve compliance with AISI S914 and ensure the quality and safety of your CFS framing products.
Resources
Keywords
joist connectors; cold-formed steel; structural framing; strength; deformation behavior; testing; loading; failure modes; yield strength; ultimate strength; stiffness; ductility; connection design; shear strength; tension strength