1.1 Product Summary:
- Prefabricated steel FEMA 320 / 361 Deployable folding tornado shelter
- Prefabricated steel FEMA 320 / 361 Fixed structure tornado shelter.
1.2 References:
Shelter shall be designed, manufactured and installed in accordance with the following standards:
- FEMA 320 Taking Shelter From the Storm
- FEMA 361 Design and Construction for Community Safe Rooms
- ICC 500 Standard for Design and Construction of Storm Shelters
- American Welding Society (AWS)
- ADA Accessibility Guidelines (ADAAG)
- International Building Code (IBC)
- American Society for Testing Materials (ASTM)
- ANSI A117.1
- National Electrical Code (NEC) (When optional electrical items are required)
- Texas Tech University Test for Debris impact
- Certified Structural PE design approval.
1.3 Design Requirements:
- Tornado Shelter: Provide factory prefabricated shelters capable of withstanding the effects of an F5 tornado.
- Tornado Shelter Design Loads: Determine loads based on following minimum requirements:
- Wind Load: 3-second gust of 250 mph (standard).
- Debris impact 2”x4” and weight of 15 LB projectile at 100mph.
- Impact permanent deformation not greater than 3”
- Anchoring bolts at pull out point of 45,000 lb. force.
- Tornado Shelter Concrete Anchoring Criteria:
- Base anchoring points to be secured to a Concrete pad / floor minimum design criteria 4” thick 4000 PSI reinforced concrete.
- Minimum base anchoring points to be at each corner and each side of door with additional anchors as required per manufactures design.
1.4 Performance Requirements:
- Cooperate with local regulatory agency or authority and provide data as requested by authority having jurisdiction.
- Prefabricated shelters specified herein shall be handicapped accessible in accordance with ICC/ANSI A117.1 and other state and local requirements as applicable.
1.5 Submittals
- Product Data: Manufacturer’s data sheets on each product to be used, product metals & finishes available upon request.
- Preparation instructions and recommendations.
- Storage and handling requirements and recommendations.
- Manufactures installation instruction methods.
- Shop Drawings: Include plan views, sections, door details, and anchor detail.
- Selection Samples: For each finish product specified, two complete sets of standard color samples “Desert Sand”, and or color charts with full range of optional colors.
- Certificates: Product certificates signed by the testing agency or laboratory and material certifications as required.
- Warranty Documentation: Manufactures standard year limited warranty.
1.6 Quality Assurance:
- Manufacturer Qualifications: Company specializing in manufacturing prefabricated shelters with a minimum of twenty years’ experience in manufacturing and fabrication processes. A quality assurance program utilizing an independent third party to test each system design to industry standards.
- Prefabricated Components: Comply with manufacturer’s published literature for products meeting indicated design loads in accordance with state and local requirements as applicable.
- DELIVERY, STORAGE, AND HANDLINGS: Store products in manufacturer’s unopened packaging until ready for installation.
- Protect all components and accessories from corrosion, deformation, damage and deterioration when stored at job site. Keep materials free from dirt and foreign matter.
1.7 Project Conditions:
Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer’s absolute limits.
1.8 Warranty:
- Manufacturer’s Warranties: Provide manufacturer’s limited warranty on products to be free of defects in materials and workmanship from date of shipment.
- Provide copies of the third party manufacturer’s warrantees on all optional accessory items provided such as, but not limited to, UPS battery backup power, lights, phone, radio.