Chapter 4 FF2 Please enter your email: 1. A collapse zone must be established when: mortar between masonry shows no sign of deterioration. there is no evidence of structural instability. a defensive strategy has been adopted. furnishings and finishes do not overwhelm fire suppression systems. 2. 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. 3. How much is added to the weight of floors for every U.S. gallon (SI liter) used during suppression? 6.25 pounds (2.83 kilograms) 8.33 pounds (3.69 kilograms) 5.22 pounds (2.37 kilograms) 10.22 pounds (4.63 kilograms) 4. Which of the following BEST describes where the collapse zone is established? 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 Near any area that is 20 feet (6.09 m) from exterior walls 5. Which of the following must be considered when deciding the size of a collapse zone? Type of building construction and safest location for personnel Local adopted building codes Number of personnel on-scene and type of building construction Number of personnel on-scene 6. Vertical tactical ventilation can be defined as channeling smoke from the: lowest point in a building. highest point in a building. point in a building that has the least windows. point in a building that has the most windows. 7. For which type of construction is flying glass the primary collapse zone hazard concern? Type V Type I Type III Type IV 8. Which type of roof is used whenever large open floor spaces with limited interior support is needed? Sawtooth Lantern Bowstring truss Mansard 9. Which of the following BEST describes a primary dangerous building condition? Conditions that suppress fire Conditions that contribute to fire spread Conditions that permit occupants to safely escape Conditions that allow tactical ventilation 10. 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. 11. In what fire stage is structural collapse very likely? Fully developed Growth Incipient Decay 12. Which of the following BEST describes when structural collapse may occur? It can only occur before fire suppression. It can occur when all the factors are met. It can occur well after the fire is extinguished. It can only occur during fire suppression. 13. When exposed to temperatures above ___ unprotected steel will expand and twist. 1,000°F (538°C) 300°F (149°C) 500°F (260°C) 900°F (482°C) 14. When a collapse is imminent, personnel ___ in the collapse zone. may cautiously place an unstaffed master stream should never work are allowed to work may stay for twenty minutes 15. 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 16. The critical temperature for steel trusses is: 500°F (260°C). 900°F (482°C). 1,000°F (538°C) 300°F (149°C). 17. 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. all combustible materials in a given area burn. no combustible materials are present. 18. Which of the following BEST describes a possible construction hazard? The building is subject to rapid fire spread because protective features are not in place. 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. 19. A collapse zone for a Type IV structure should be established when: walls begin to shift because the building is twisting. its veneer begins to curtain collapse. it has been determined that glass shards will be directed at on-scene personnel. the structure has been weakened by repeated fires over time. Loading … Question 1 of 19
