How Do You Size a Commercial Tornado Shelter for Your Employees?
If you're looking for a commercial tornado shelter that scales to your workforce size and meets FEMA and ICC-500 requirements, this video walks through everything you need to know about the Survive-A-Storm Quonset-style community shelter.
Built in 8-foot sections, these shelters range from 10x8 up to 10x96 — and can be fully customized for larger facilities. Every unit is constructed from double-welded quarter-inch cold rolled steel, engineered to withstand EF5 wind speeds of 250+ mph, and meets or exceeds all ICC-500 and FEMA P-361 guidelines.
Occupancy is calculated at 5 square feet per person — the ICC-500 standard for community shelters. That means a 10x20 shelter (200 sq ft usable) accommodates approximately 40 people. Use that formula to size the right shelter for your employee headcount.
Standard features on every unit include a 3-point locking system, double-welded quarter-inch steel construction, and emergency lighting on both ends. Options include passive ventilation and active HVAC for climate control when on-site power is available. Removable bench seating runs along both interior sides.
Survive-A-Storm Shelters is the nation's leading manufacturer and installer of above-ground commercial tornado shelters, trusted by Walmart, Toyota, the U.S. Army, 3M, Siemens, and hundreds of employers across tornado-prone America.
📐 Sizing your shelter: Take your total employee count × 5 sq ft = minimum shelter floor area needed.
📞 Call us: 888-360-1492
🔗 Commercial shelters: https://survive-a-storm.com/commercia...
0:00 — What is a Quonset-style commercial tornado shelter?
0:12 — Available sizes: 10x8 up to 10x96, custom options
0:23 — 3-point locking system overview
0:29 — Double-welded quarter-inch steel construction — EF5 rated
0:37 — Standard emergency lighting on both ends
0:45 — Passive ventilation system option
0:49 — Active HVAC / climate control option
0:57 — Removable bench seating
1:03 — ICC-500 and FEMA P-361 compliance
1:13 — How to calculate occupancy: 5 sq ft per person
1:20 — How to size the right shelter for your facility
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