FEMA IS 319: Tornado Mitigation Basics for Mitigation Staff Answers
1. Which of the statements below is correct about mitigation measures for straight-line winds?
A. Shingles with longer warranties should not be recommended because of cost.
B. A gable roof is more wind resistant than a hip roof.
C. Shingles should be attached to the roof decking with appropriate length roofing nails.
D. Roof sheathing can be stapled to trusses.
2. Pruning trees to allow the air to blow through the branches helps keep the tree rooted in strong winds
3. Double entry doors should be secured with a latch at the top of the door which protrudes into the doorframe to prevent the doors from being blown open by high winds. No other latching is necessary.
4. The correct continuous load path is roof to upper floor walls to lower walls to main floor to foundation.
5. Which organization(s) partner with FEMA to provide user-friendly information and guidance on tornado mitigation?
D. All of the above
E. None of the above
6. FEMA does not recommend reinforcing the garage door with metal bars and brackets to increase resistance to high-wind pressure because this may hinder evacuation.
7. The primary purpose of directing the public to local building officials before repairing or rebuilding after a tornado is:
A. Their community may have a floodplain ordinance, a building code, and/or other requirements for rebuilding.
B. FEMA wants to avoid liability for making incorrect recommendations.
C. Building officials will make the public use licensed professionals to do the repairs.
D. None of these are correct.
8. Manufactured homes may experience direct damage and indirect damage from tornados. Direct damage to manufactured housing from tornados may include connection failures as well as anchorage failures.
9. What type of damage could be caused by straight-line winds from a tornado?
A. Broken windows and siding ripped off
B. All or part of a roof torn off
C. Completely collapsed structure
D. All of these are correct
E. None of these are correct
10. Straight-line winds from a tornado are nothing like the winds of a hurricane.
11. Recommended mitigation measures for windows include using impact resistant glass and functional shutters.
12. The purpose of adding fasteners and straps is:
A. To protect the manufactured home from vortex winds
B. To improve the manufactured home’s wind resistance
C. Both of these are correct
D. None of these are correct
13. What is the purpose of hardening a structure by strengthening the continuous load path?
A. The continuous load path connects the roof directly to the bottom floor of a structure, thereby aligning the building and allowing it to withstand the force from straight-line winds.
B. By using metal brackets and straps, all of the structure’s components are linked horizontally and vertically so they stay connected when the structure is hit by straight-line winds.
C. By linking and reinforcing connections between each level of a structure, from the roof to the foundation, the load caused by a straight-line wind is transferred to the ground, helping to
D. All of these are correct.
14. When a manufactured home shifts off of its foundation due to an anchoring system failure, this is called indirect damage.
15. Which mitigation measure below should be recommended to reduce risk of damage by high winds to outbuildings and trees near a structure?
A. Anchor outbuildings and sheds with anchor straps similar to those used for manufactured homes.
B. Remove trees that are closer to the structure than they will be tall at maturity.
C. All of these are correct.
16. FEMA’s recommendations for protecting life from tornado’s vortex winds are to use a safe room in a house or stay in a stand-alone shelter.
17. When additions such as awnings, carports, or porches are attached to a manufactured home, the potential for damage to the home increases.
18. Rotating vortex winds can uproot trees, lift vehicles off the ground, and shear off roofs while leaving the rest of the house untouched.