Based on Criteria Listed in Federal Emergency Management Agency publication FEMA 320 /August 2008;
ICC 500-2008 ICC/NSSA Standard For The Design and Construction of Storm Shelters; ASTM E 1886-05 Standard Test Method for Protective Systems Impacted by Missiles NPCTS -National Performance Criteria for Tornado Shelters
HOW ALL STORM SHIELD TORNADO SHELTER MODELS MEET OR EXCEED THE REGULATORY REQUIREMENTS ARE LISTED BELOW IN RED
ICC 500 Sect 502.2 | Access Opening — Requires access opening minimum size 24″ wide x 30″ long.
SS4, SS6, SS10 and SS12F @ 24" x 64"; SS12HS @ 26" x 62"
ICC 500 Sect 503.1 | Vertical Access — Requires minimum tread depth 8″ and maximum riser height 9-9/16″
SS4, SS6, SS10 and SS12 Tread depth 8-1/2" and Riser height 9-1/2"
ICC 500 Sect 503.1 | Vertical Access — Requires minimum tread depth 8″ and maximum riser height 9-9/16″
SS4, SS6, and SS10 - 5'-5"; SS12 - 6'-10" All Storm Shield Tornado Shelters have signage.
ICC 500 Sect 502.3.1.2 | Handrail required on stairways having more than three stairs.
All Storm Shield Tornado Shelters have a continuous handrail on one side of stairway
ICC 500 Sect 502.4 | Occupant Density — Requires minimum 3 sq ft usable shelter area per occupant.
SS4 @ 4.2 sq ft; SS6 @ 3.6 sq ft; [email protected] ft; SS12 @ 4.4 sq ft per occupant.
SS4 ,SS6, SS10 & SS12 with 48" Stainless Steel Continuous Hinge; with 3 positive latch points.
NPCTS | Requires exterior key accessibility for post storm Emergency Entry by EMS personnel if needed when latches are engaged from the inside.
All Storm Shield Tornado Shelters exceed requirement. Emergency access made possible by removal of one nut per latch with standard adjustable wrench.
ICC 500 Sect 302303/304 | Loads and load combinations, Hydrostatic loads, wind loads, required for the construction of shelters
All Storm Shield Tornado Shelters designed and manufactured to meet or exceed structural design criteria listed.
ICC 500 Sect 305/306500 Sect 804 FEMA 320/361 NPCTS ASTM E 1886 | Windborne Debris Hazards — Requires tornado shelters exposed surfaces to be designed and ICC 500 Sect 804 tested to emulate wind speeds of 250 mph. 15-lb sawn lumber 2×4 missiles impacting exposed FEMA 320/361 surfaces less than 30 degrees from horizontal at 67 mph and exposed vertical surfaces at 100 NPCTS mph.
Component design and testing performed under the over site of a third party engineering firm.
ICC 500 Sect 702.1 | Requires 2 sq. in. or 4 sq. in. of natural ventilation based on location of ventilation ports per occupant.
