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What Are Seismic Rack Solutions?
Seismic-rated racks are designed to keep equipment secure and operational during and after an earthquake. Unlike standard racks, they are reinforced, anchored, and physically tested under real-world seismic conditions.
Why Seismic Matters in Rack Applications?
- Protects critical infrastructure from damage and downtime
- Helps maintain uptime during seismic events
- Required for telecom, data, and critical facilities in seismic zones
- Reduces risk of tipping, equipment failure, and costly replacement
Seismic-rated racks are designed so equipment can remain operational during and after an earthquake, not just survive structurally.
When Should You Specify Seismic Racks?
Seismic-rated racks are recommended or required when:
- Installing in seismic regions (West Coast, high-risk zones)
- Working on telecom or carrier-grade infrastructure
- Project specifications require NEBS or GR-63 compliance
- Equipment uptime is critical (data centers, healthcare, utilities)
- Applications involve vibration (rail, industrial, transportation)
Seismic racks are often mandatory in higher seismic design categories under building codes.
What to Ask Before Specifying a Seismic Rack
- Is there a 3rd party test report?
- What was the tested load capacity?
- Was the product tested fully loaded?
- Is test video/documentation available?
What Does “Seismic Rated” Actually Mean?
Most seismic rack specifications reference:
- GR-63-CORE (NEBS): Defines physical protection requirements including seismic, vibration, and structural integrity for telecom equipment.
- NEBS Zone Ratings (Zone 1–4): Zone 4 represents the most severe seismic conditions and requires the highest level of testing.
- IBC/CBC (International/California Building Code):
Governs anchoring and life safety requirements for installed equipment and is based on engineering calculations.
To meet NEBS standards, racks are:
- Fully loaded and tested on shake tables
- Evaluated for movement, deflection, and structural integrity
- Required to remain functional during and after testing
GR-63 testing validates that equipment remains installed and functional during and after seismic events.
Important:
Seismic-rated racks do not guarantee protection in all earthquake scenarios. Proper installation, anchoring, and site-specific engineering are required for full compliance and performance.
Hammond Seismic Rack Solutions
Hammond offers seismic-ready rack solutions designed to meet industry standards for structural integrity, load capacity, and compliance. These solutions support applications where reliability, safety, and uptime are critical.
Hammond seismic racks have been independently tested to either GR-63 Zone 4 or IBC/CBC standards and designed for telecom, data center, and critical infrastructure applications requiring proven seismic performance.
