FEMA/ICC 500 SPECIFICATIONS

FEMA/ICC-500 Specifications For Storm Shelters

FEMA/ICC-500 compliance is a rule at Integrity Storm Shelters. In many cases, our shelters exceed the shelter industry benchmarks. The graph below details the specifics of our shelters as they relate to the requirements established by the Federal government, and others, in regards to design of in-ground storm shelters.

F.E.M.A. DESIGN REQUIREMENTS FOR IN-GROUND TORNADO SHELTERS

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

ALL STORM SHELTER MODELS MEET OR EXCEED THE REQUIREMENTS LISTED BELOW

ICC 500 Sect 502.2 Access Opening — Requires access opening minimum size 24" wide x 30" long. All our STORM SHELTERS exceed requirement.
ICC 500 Sec 502.3.1 Vertical Access — Requires minimum tread depth 8" and maximum riser height 9-9/16" All our STORM SHELTERS exceed requirement.
ICC 500 Sect 502.3.1 Vertical Access — Requires minimum Stair width 22" and slip resistant surface. All our STORM SHELTERS exceed requirement.
ICC 500 Sect 502.3.1 Overhead Clearance — Requires minimum overhead clearance 6'-8" or 5'-0" with signage. All our STORM SHELTERS exceed requirement.
ICC 500 Sect 502.3.1.2 Handrail required on stairways having more than three stairs. All our STORM 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. All our STORM SHELTERS exceed requirement.
FEMA 320 & 361 NPCTS Requires minimum 3 hinge attachment points and 3 positive latch points. All our STORM SHELTERS have full length hinge with 3-point lock system.
NPCTS Requires exterior key accessibility for post storm Emergency Entry by EMS personnel if needed when latches are engaged from the inside. All our STORM SHELTERS exceed requirement. Emergency access can be made by removal of full length hinge from outside with 2- 7/16” wrenches.
ICC 500 Sect 302303/304 Loads and load combinations, Hydrostatic loads, wind loads, required for the construction of shelters All our STORM SHELTERS have been tested by a third party engineering firm for underground structural design. All models exceed the requirements.
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 tested to emulate wind speeds of 250 mph. 15-lb sawn lumber 2x4 missiles impacting exposed surfaces less than 30 degrees from horizontal at 67 mph and exposed vertical surfaces at 100 mph. DESIGN TESTED AND PASSED TESTING AT T.T.U. WIND ENGINEERING FACILITY DATA AVAILABLE UPON REQUEST
ICC 500 Sect 702.1 Requires 2 sq. in. or 4 sq. in. of natural ventilation based on location of ventilation ports per occupant. All our STORM SHELTERS are manufactured to meet or exceed ventilation requirements.

High caliber, qualified shelter designs—built to save lives—is why the Tri-State calls on Integrity Storm Shelters to prepare before the sirens sound.

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