Chapter 4 FF2 Please enter your email: 1. Which of the following BEST describes a primary dangerous building condition? Conditions that suppress fire Conditions that allow tactical ventilation Conditions that contribute to fire spread Conditions that permit occupants to safely escape 2. 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 3. Knowing types of doors and door hardware can help firefighters: predict fire development. select the right type of vertical tactical ventilation. judge roof safety. select correct forcible entry tools. 4. 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) 5. What is the most effective defense against heavy content fuel loading? Not allowing the use of combustible materials in construction Adopting local standards that limit multistory buildings Restricting the types of combustible materials used Proper inspection and code enforcement 6. How much is added to the weight of floors for every U.S. gallon (SI liter) used during suppression? 5.22 pounds (2.37 kilograms) 10.22 pounds (4.63 kilograms) 8.33 pounds (3.69 kilograms) 6.25 pounds (2.83 kilograms) 7. Which of the following BEST describes when structural collapse may occur? It can occur well after the fire is extinguished. It can only occur before fire suppression. It can occur when all the factors are met. It can only occur during fire suppression. 8. Which of the following must be considered when deciding the size of a collapse zone? Type of building construction and safest location for personnel Number of personnel on-scene Local adopted building codes Number of personnel on-scene and type of building construction 9. In what fire stage is structural collapse very likely? Incipient Growth Decay Fully developed 10. 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. 11. For which type of construction is flying glass the primary collapse zone hazard concern? Type III Type IV Type V Type I 12. Which type of roof is used whenever large open floor spaces with limited interior support is needed? Sawtooth Mansard Bowstring truss Lantern 13. A collapse zone for a Type IV structure should be established when: the structure has been weakened by repeated fires over time. walls begin to shift because the building is twisting. it has been determined that glass shards will be directed at on-scene personnel. its veneer begins to curtain collapse. 14. A collapse zone must be established when: mortar between masonry shows no sign of deterioration. furnishings and finishes do not overwhelm fire suppression systems. there is no evidence of structural instability. a defensive strategy has been adopted. 15. Vertical tactical ventilation can be defined as channeling smoke from the: highest point in a building. point in a building that has the most windows. lowest point in a building. point in a building that has the least windows. 16. The critical temperature for steel trusses is: 300°F (149°C). 500°F (260°C). 900°F (482°C). 1,000°F (538°C) 17. 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. 18. 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 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 19. Fuel loading is defined as the maximum heat produced if: none of the combustible materials in a given area burn. all combustible materials in a given area burn. nothing but combustible materials are present. no combustible materials are present. Loading … Question 1 of 19
