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Fire sprinkler system productivity tips and resources

Earthquakes are an inevitable part of our lives. Properly accounting for seismic bracing is critical to life and non-structural system safety. 

For commercial construction such as office buildings, hotels, data centers, schools, and hospitals, the nonstructural components and contents typically represent 80–90% of the capital investment at risk during an earthquake. Seismic bracing helps mitigate the risk of damage to or failure of crucial systems, protecting people and non-structural components at risk during an earthquake.

Why TOLCO seismic bracing solutions?

For over 60 years, the fire protection industry has relied on TOLCO seismic bracing products, B-Line series pipe hangers and seismic engineer services.  Our core seismic bracing products are trusted by contractors worldwide to help combat damage from earthquakes.

Why is seismic bracing important?

  • Critical to life safety 
  • Many building codes require seismic bracing
  • Seismic bracing helps protect non-structural components, such as fire sprinkler systems, electrical and mechanical systems.
  • Risk mitigation and insurance companies drive seismic bracing requirements 

What is the purpose of seismic bracing?

Seismic braces attach equipment to structural members, allowing them to move with the structure during an earthquake. This requires bracing in two directions. First, lateral braces, also called transverse braces, are installed across or perpendicular to the system. Second, longitudinal braces are installed parallel to the system. 

Seismic bracing also uses rod stiffeners to keep the whole system strong enough to be braced. To break it down even further, a seismic bracing assembly consists of three items: a system brace, a brace member, and structural attachment. The assembly connects the structure such as a beam or ceiling, to a brace member which could be cable, channel, or pipe to a non-structural support, such as pipe, trapeze, cable tray, duct, and more.

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What is the difference between cable bracing and rigid bracing?

Seismic bracing is categorized as cable bracing or rigid bracing. Both bracing methods can be used in mechanical, electrical, plumbing and fire protection applications. 

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Cable bracing works in tension, so it requires two opposing brace assemblies at each brace location.
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Rigid bracing works in both tension and compression, so one brace assembly per brace location is required. However, the use of rigid bracing is limited depending on the drop length. 

What codes and standards exist for seismic bracing? 

Seismic bracing is governed by building codes and standards to help ensure critical infrastructure equipment is braced for seismic activity. These include The International Building Code (IBC), The American Society of Civil Engineers (ASCE), California Department of Health Care Access and Information (HCAI), California Building Code (CBC), International Code Council - Evaluation Service (ICC-ES), National Fire Protection Association (NFPA), Underwriter’s Laboratory (UL) and Factory Mutual Group of Insurers (FM).

How can I get assistance with building codes and standards? 

Eaton’s Seismic Engineering Team provides the expertise to de-risk your next project by ensuring the solutions provided meet the relevant codes and standards while providing the minimum number of seismic braces required. 

We can help from pre-bid to installation and inspection.

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Do you offer software to help calculate and find the right seismic bracing solutions? 

TOLBrace software is designed specifically for Eaton’s TOLCO seismic bracing solutions, and allows Engineers, Designers, Plan Reviewers, and Fire Authorities to calculate the zone of influence for fire sprinkler systems.

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Where can I find HCAI pre-approved solutions? 

Eaton’s HCAI OPM-0052-22 pre-approved assemblies catalog is a detailed reference guide for Contractors, Design Engineers and Authorities Having Jurisdiction (AHJs) to assist with seismic bracing design review and bracing layouts.

These Professional Engineered (PE) stamped assemblies help speed design and bracing layout review timeline for California Building Code (CBC) 2022 and include load data and installation diagrams for structural attachments. 

Resources and tools