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