Chapter 4 FF2 Please enter your email: 1. Knowing types of doors and door hardware can help firefighters: judge roof safety. predict fire development. select correct forcible entry tools. select the right type of vertical tactical ventilation. 2. When exposed to temperatures above ___ unprotected steel will expand and twist. 300°F (149°C) 1,000°F (538°C) 500°F (260°C) 900°F (482°C) 3. Which of the following BEST describes when structural collapse may occur? It can occur when all the factors are met. It can occur well after the fire is extinguished. It can only occur before fire suppression. It can only occur during fire suppression. 4. Which of the following BEST describes a possible construction hazard? Fire detection systems may be damaged. Danger increases because occupants and belongings remain in one part of the building while work goes on in the other. The building is subject to rapid fire spread because protective features are not in place. Furnishings may contribute to fire spread. 5. A collapse zone for a Type IV structure should be established when: it has been determined that glass shards will be directed at on-scene personnel. the structure has been weakened by repeated fires over time. its veneer begins to curtain collapse. walls begin to shift because the building is twisting. 6. How much is added to the weight of floors for every U.S. gallon (SI liter) used during suppression? 10.22 pounds (4.63 kilograms) 8.33 pounds (3.69 kilograms) 6.25 pounds (2.83 kilograms) 5.22 pounds (2.37 kilograms) 7. Which of the following BEST describes a primary dangerous building condition? Conditions that suppress fire Conditions that permit occupants to safely escape Conditions that contribute to fire spread Conditions that allow tactical ventilation 8. Renovation, age of the structure, weather, and loads are all: structural collapse factors. renovations hazards. impossible to estimate the impact of on a structure. building construction hazards. 9. When a collapse is imminent, personnel ___ in the collapse zone. are allowed to work may stay for twenty minutes may cautiously place an unstaffed master stream should never work 10. Which type of roof is used whenever large open floor spaces with limited interior support is needed? Bowstring truss Sawtooth Mansard Lantern 11. In what fire stage is structural collapse very likely? Decay Incipient Growth Fully developed 12. Which of the following must be considered when deciding the size of a collapse zone? Number of personnel on-scene and type of building construction Number of personnel on-scene Local adopted building codes Type of building construction and safest location for personnel 13. Vertical tactical ventilation can be defined as channeling smoke from the: highest point in a building. lowest point in a building. point in a building that has the most windows. point in a building that has the least windows. 14. The critical temperature for steel trusses is: 500°F (260°C). 900°F (482°C). 300°F (149°C). 1,000°F (538°C) 15. A collapse zone must be established when: furnishings and finishes do not overwhelm fire suppression systems. there is no evidence of structural instability. mortar between masonry shows no sign of deterioration. a defensive strategy has been adopted. 16. What is the most effective defense against heavy content fuel loading? Restricting the types of combustible materials used Proper inspection and code enforcement Adopting local standards that limit multistory buildings Not allowing the use of combustible materials in construction 17. Fuel loading is defined as the maximum heat produced if: none of the combustible materials in a given area burn. no combustible materials are present. all combustible materials in a given area burn. nothing but combustible materials are present. 18. Which of the following BEST describes where the collapse zone is established? Near any area that is 20 feet (6.09 m) from exterior walls Adjacent to any exposed interior walls Adjacent to any exposed exterior walls Near any area that is 10 feet (3.04 m) from exterior walls 19. For which type of construction is flying glass the primary collapse zone hazard concern? Type IV Type I Type III Type V Loading … Question 1 of 19
