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? Lantern Sawtooth Mansard Bowstring truss 2. The critical temperature for steel trusses is: 500°F (260°C). 300°F (149°C). 900°F (482°C). 1,000°F (538°C) 3. Which of the following BEST describes when structural collapse may occur? It can only occur before fire suppression. 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. 4. Which of the following BEST describes a primary dangerous building condition? Conditions that contribute to fire spread Conditions that allow tactical ventilation Conditions that permit occupants to safely escape Conditions that suppress fire 5. When exposed to temperatures above ___ unprotected steel will expand and twist. 900°F (482°C) 300°F (149°C) 500°F (260°C) 1,000°F (538°C) 6. 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. 7. 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. 8. Fuel loading is defined as the maximum heat produced if: no combustible materials are present. nothing but combustible materials are present. all combustible materials in a given area burn. none of the combustible materials in a given area burn. 9. 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 Local adopted building codes Type of building construction and safest location for personnel Number of personnel on-scene 10. Which of the following BEST describes where the collapse zone is established? Adjacent to any exposed exterior walls Near any area that is 20 feet (6.09 m) from exterior walls Adjacent to any exposed interior walls Near any area that is 10 feet (3.04 m) from exterior walls 11. A collapse zone for a Type IV structure should be established when: the structure has been weakened by repeated fires over time. it has been determined that glass shards will be directed at on-scene personnel. walls begin to shift because the building is twisting. its veneer begins to curtain collapse. 12. What is the most effective defense against heavy content fuel loading? Restricting the types of combustible materials used Adopting local standards that limit multistory buildings Proper inspection and code enforcement Not allowing the use of combustible materials in construction 13. 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) 5.22 pounds (2.37 kilograms) 10.22 pounds (4.63 kilograms) 8.33 pounds (3.69 kilograms) 14. For which type of construction is flying glass the primary collapse zone hazard concern? Type IV Type I Type V Type III 15. Knowing types of doors and door hardware can help firefighters: predict fire development. select correct forcible entry tools. judge roof safety. select the right type of vertical tactical ventilation. 16. Which of the following BEST describes a possible construction hazard? Fire detection systems may be damaged. 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. 17. In what fire stage is structural collapse very likely? Growth Decay Fully developed Incipient 18. When a collapse is imminent, personnel ___ in the collapse zone. may stay for twenty minutes are allowed to work may cautiously place an unstaffed master stream should never work 19. Renovation, age of the structure, weather, and loads are all: impossible to estimate the impact of on a structure. building construction hazards. structural collapse factors. renovations hazards. Loading … Question 1 of 19
