Fiberglass Shelter 320 Specifications
We strongly encourage anyone shopping for a storm shelter is aware of FEMA testing. Our shelters are tested with FEMA’s 320 guidelines. Testing includes all storm shelters, doors and components meet these specifications. Ask for the test results!
Tested Storm Shelters Certification
Our fiberglass storm shelters are tested at the Debris Impact Test Center at Texas Tech’s wind science and engineering department. The actual test consisted of 2 x 4 “missiles” fired at a force to equal a 250 mph tornado. These stragetically, laser-guided projectiles were impacted at designated targets considered to be the most vulnerable. Critical areas such as hinges, door latches, and walls are severely impacted and tested to their limit of strength.
Wind Engineer Evaluation
Next, the storm shelter is evaluated by a wind engineer to determine the structural integrity of the shelter as a whole. Questions are evaluated like, “Will it actually withstand all the violent forces that occur in an EF-5 tornado?” To determine how much stress and strain the shelter can withstand, the top rated wind engineers in the world, Dr. James R. McDonald, PHD. and Dr. Kishor Mehta, PHD. of McDonald-Mehta Engineers, LLP., then do their intense evaluation.
McDonald & Mehta are the two wind engineer scientists hired by the National Weather Service to create the new rating scale for tornado intensity. It is formerly known as the “Fujita Scale” or “F-Scale”. Recently, it has been upgraded and has replaced the new “Enhanced Fujita Scale” or “EF-Scale”.
Texas Tech’s Wind Science Engineering
The Refuge storm shelters are tested and certified by the Debris Impact Test Center at Texas Tech University’s wind science and engineering department.
Once the storm shelter has passed the test and the evaluation snalysis, the National Storm Shelter Association then deems it a suitable shelter worthy of certification by meeting or exceeding all of FEMA 320 standards and guidelines.
The certified shelter now qualifies for a seal of certification, which is attached to the shelter with a designated serial number. The owner of the shelter receives a certificate of certification and the storm shelter is then registered with the National Storm Shelter Association.
The purpose is for consumer protection and for setting an industry standard for safety and quality in design and manufacture