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In areas where earthquakes are common, seismic bracing is required to protect fire suppression systems.
To ensure stronger, more dependable bracing systems for sprinkler systems, Underwriters Laboratories (UL) recently updated its 203A Standard for Safety Sway Brace Devices for Sprinkler System Piping. The updates include increasing the safety factor from 1.5 to 2.2 as is required by NFPA 13, 2019 and testing the seismic bracing components at more angles so as to better model the installed conditions.
While other manufacturers may have chosen to make no product changes and reduce their published catalog loads, Eaton has chosen to redesign its TOLCO bracing systems for sprinkler systems. The TOLCO solutions meet the new UL203A standards for safety factor and load rating.
The TOLCO Fig. 4L sway brace allows for both longitudinal and lateral pipe sway bracing and has an improved UL load in compliance with UL203A standard. It features a break-off torque nut on the pipe clamp to help ensure visual verification of proper installation.
The Fig. 980 universal swivel sway brace is one of the most popular attachments in the market today. It is designed to attach to the structure or structural attachment and is used with strut channel or pipe as the brace member.
The Fig. 828 universal sway brace upper attachment for steel is designed to attach sway bracing and hanger assemblies to structural members using a secure non-friction connection without drilling or welding.
Eaton's TOLBrace Software for fire protection seismic bracing is now updated for 2019 NFPA 13. The software continues to support older versions of NFPA 13 to support your project and region needs.
As an interim release, to arrive at the new safety factor of 2.2, the calculated load within the Zone of Influence was increased by 1.47 (2.2/1.5). The next TOLBrace update will coincide with the new product releases and will have the new UL listed brace capacities. Since the new UL listed brace capacities have the 2.2 safety factor built into them, the next update will also remove the 1.47 factor from the calculated load within the zone of influence.
Effective September 21, 2020, the TOLCO Fig. 980, Fig. 4L, Fig. 910 and Fig. 906 series have been updated to the new UL203A standard. Due to this change, many of the catalog and material numbers have been discontinued and have cross references to new catalog and material numbers, while others retain their same catalog and material numbers with product feature enhancements.
