scope:

This standard encompasses the design and performance requirements for seismic sway bracing components used in automatic sprinkler systems. In cases where metric sized pipe hanger components are to be examined for Approval, test loads comparable to the United States equivalent shall be used.

For rigid seismic sway braces, the general requirements for seismic sway bracing components apply to the components that are attached to the structural element and the components that are attached to the sprinkler piping. Although used in testing, the component that is attached between the building-attached component and the piping-attached component is not included within the scope of the standard.

The evaluation of building-attached components is based on the premise that the component would either break, or deform in excess of the allowed limits, prior to either the failure of the attachment fastener, or the deflection of the structural member (e.g. beam). Therefore, the attachment fastener and structural members are not considered to be within the scope of this Approval Standard.

The evaluation of piping-attached components is based on the premise that the component would break, deform in excess of allowed limits, or lose its grip on the sprinkler pipe.

Seismic sway brace components are designed to attach to sprinkler pipe from 1 in. to 12 in. nominal pipe size.

In the case of rigid seismic sway brace assemblies, the general requirements and performance requirements apply to the entire assemblies.

Approval standards are intended to verify that the product described will meet stated conditions of performance, safety, and quality useful to the ends of property conservation.

Purpose

This standard states Approval criteria for rigid seismic sway brace components and assemblies for automatic sprinkler systems.

Approval criteria may include, but are not limited to, performance requirements, marking requirements, examination of manufacturing facility(ies), audit of quality assurance procedures, and a follow-up program.