TCFP Firefighter I/II Chapters 6-9 Test with complete solutions

A NIOSH study found that unprotected lightweight engineered I-joist floor assemblies fail after _____ minutes of fire exposure. Select one: A. 12 B. 6 C. 9 D. 15 - Answer- B. 6 If heated to a temperature of 1000ºF (540ºC), how far can a 100-foot (30-meter) steel beam elongate? Select one: A. 15 inches (38 mm) B. 12 inches (30 mm) C. 9 inches (23 mm) D. 6 inches (15 mm) - Answer- C. 9 inches (23 mm) The primary purpose of the __________ is to transfer the weight of the building and its contents to the ground. Select one: A. floor joists B. purlin C. piers D. foundation - Answer- D. foundation The rate of combustion of wood is most directly related to which factor? Select one: A. Surface area B. Volatility C. Use of adhesives D. Age - Answer- A. Surface area Type II construction is referred to as: Select one: A. noncombustible. B. fire resistive. C. fire retardant. D. ordinary. - Answer- A. noncombustible. Type III construction is usually limited to a maximum height of _____ stories. Select one: A. 5 B. 3 C. 4 D. 2 - Answer- C. 4 What are laminated glass windows likely to do when exposed to a fire? Select one: A. Melt B. Break irregularly into long, sharp-edged shards C. Shatter into small nuggets with dull edges D. Crack but remain in place - Answer- D. Crack but remain in place What is a bar joist? Select one: A. An open-web steel truss B. A steel I-beam used to support a floor or roof C. Any engineered component with steel load-bearing members D. A truss with steel parallel members and wood diagonals - Answer- A. An open-web steel truss What is plasterboard commonly used for? Select one: A. Roof sheathing B. Shear wall C. Interior walls and ceilings D. Roof fascia and soffits - Answer- C. Interior walls and ceilings What is the lower structural member of a truss called? Select one: A. Beam B. Chord C. Cantilever D. Girder - Answer- B. Chord Which construction assembly is the most susceptible to total failure resulting from the failure of a small section? Select one: A. Truss B. Roof panel C. Cantilever D. Bearing wall - Answer- A. Truss Which construction component is composed of smaller pieces joined to form a triangular configuration? Select one: A. Glue-lam beam B. Chord C. Truss D. Precast panel - Answer- C. Truss Which construction feature presents the greatest collapse hazard? Select one: A. Steel structural elements B. Modern lightweight construction C. Balloon construction D. Masonry bearing walls - Answer- B. Modern lightweight construction Which construction method is particularly susceptible to extension of fire upward through walls? Select one: A. Ordinary B. Heavy timber C. Balloon frame D. Platform - Answer- C. Balloon frame Which factor describes how readily heat will flow through a material? Select one: A. Combustibility B. Thermal conductivity C. Reactivity D. Volatility - Answer- B. Thermal conductivity Which fire hazard is of particular concern with ordinary construction? Select one: A. Difficulty in ventilating the structure B. High fire loading C. Fire extension through void spaces D. Heat-related failure of steel trusses - Answer- C. Fire extension through void spaces Which is a disadvantage of fire-resistive construction? Select one: A. Susceptibility to water damage B. The lack of built-in fire protection systems C. Difficulty in extinguishing the fire D. Non-fire-resistive structural members - Answer- C. Difficulty in extinguishing the fire Which is an indication of a solid (not veneer) brick wall? Select one: A. Brick are laid in a running bond pattern B. Bricks are flat-laid C. Every seventh course of bricks is turned sideways D. Mortar joints are tuck-pointed - Answer- C. Every seventh course of bricks is turned sideways Which is another term for gypsum board? Select one: A. Lath B. OSB C. Stucco D. Drywall - Answer- D. Drywall Which is one of the four key characteristics affecting the behavior of building materials under fire conditions? Select one: A. Thermal conductivity B. Surface area/mass ratio C. Density D. Porosity - Answer- A. Thermal conductivity Which is one of the three primary roof designs? Select one: A. Hip B. Mansard C. Gable D. Curved - Answer- D. Curved Which is the most likely location of a curtain wall? Select one: A. Open stairwell B. Exterior of a high-rise C. Ceiling area of a large, open interior space D. High fire hazard industrial facility - Answer- B. Exterior of a high-rise Which is the term for building components consisting of individual pieces of wood glued together? Select one: A. Manufactured B. Engineered C. Modular D. Lightweight - Answer- B. Engineered Which material is a component of mortar? Select one: A. Pea gravel B. Lime C. Diatomaceous earth D. Calcium sulfate - Answer- B. Lime Which material is prone to spalling under fire conditions? Select one: A. Fiberglass B. Wood C. Concrete D. Steel - Answer- C. Concrete Which metal is used in building construction primarily as a coating to protect metal parts from rust and corrosion? Select one: A. Copper B. Zinc C. Manganese D. Gypsum - Answer- B. Zinc Which statement about masonry materials is correct? Select one: A. Masonry materials have high thermal conductivity. B. Masonry materials are susceptible to pyrolysis. C. Masonry materials expand significantly when heated. D. Masonry materials are fire resistive. - Answer- D. Masonry materials are fire resistive. Which statement about structural steel is correct? Select one: A. Temperatures commonly produced in fires exceed structural steel's melting point. B. Structural steel maintains its shape when exposed to high temperatures. C. Structural steel is very strong under both tension and compression. D. Structural steel is susceptible to fatigue. - Answer- C. Structural steel is very strong under both tension and compression. Which term is a measure of whether a material will burn? Select one: A. Pyrolytic index B. Combustibility C. Specific heat D. Conductivity - Answer- B. Combustibility Which term means the weight of a building without contents? Select one: A. Net weight B. Dead load C. Curb weight D. Live load - Answer- B. Dead load Which term means the weight of a building's contents? Select one: A. Live load B. Dead load C. Gross building weight D. Tare weight - Answer- A. Live load Which tool is commonly used to provide a secure work platform for fire fighters working on a pitched roof? Select one: A. Halligan B. Pike pole C. Roof ladder D. Safety rope - Answer- C. Roof ladder Which type of glass is most typically used in fire doors and windows? Select one: A. Wired B. Pyrex C. Safety D. Laminated - Answer- A. Wired Which type of truss has a curved upper member and a straight lower member? Select one: A. Bowstring B. Engineered C. Open web D. Lightweight - Answer- A. Bowstring Which type of truss is becoming less common in modern construction? Select one: A. Pitched cord B. Steel bar C. Bowstring D. Parallel chord - Answer- C. Bowstring Which type of wall is used to prevent the spread of fire from one side of the wall to the other? Select one: A. Partition B. Bearing C. Curtain D. Fire - Answer- D. Fire Which wood-frame construction system uses studs that run continuously from the basement to the roof? Select one: A. Conventional B. Western C. Balloon frame D. Platform - Answer- C. Balloon frame Fire-retardant wood is treated with: Select one: A. calcium sulfate. B. mineral salts. C. urea. D. aluminum oxide. - Answer- B. mineral salts. The structural components of a Type _____ building must be made of noncombustible materials. Select one: A. II B. V C. IV D. III - Answer- A. II What is Type V construction? Select one: A. Ordinary B. Fire resistive C. Lightweight D. Wood frame - Answer- D. Wood frame Which construction feature is most commonly found in Type V buildings? Select one: A. Treated lumber B. Pre-stressed concrete C. Platform-frame construction D. Bar joists - Answer- C. Platform-frame construction Which is a commonly used structural material in a Type I building? Select one: A. Treated wood B. Protected steel C. Oriented-strand board D. Engineered wood - Answer- B. Protected steel Which is the most common application for an engineered wood product? Select one: A. Stair treads and risers B. Applications where high fire-resistance is required C. Short load-bearing members D. Applications where extra-long beams are required - Answer- D. Applications where extra-long beams are required Which is the term for plastics that will melt under fire conditions? Select one: A. Amorphous B. Thermoplastic C. Pyrolytic D. Thermoset - Answer- B. Thermoplastic Which is the term for the chemical change that occurs to wood when it is heated? Select one: A. Catagenesis B. Pyrolysis C. Oxidization D. Reduction - Answer- B. Pyrolysis Which type of construction is called ordinary construction? Select one: A. I B. III C. IV D. II - Answer- B. III Which type of construction is heavy timber? Select one: A. II B. V C. III D. IV - Answer- D. IV Combustion begins when a fuel is heated to its: Select one: A. fire point. B. lower flammable limit. C. flash point. D. ignition temperature. - Answer- D. ignition temperature. Dry chemical extinguishers may be used on Class C fires because they: Select one: A. do not conduct electricity. B. are chemically inert. C. leave no residue. D. are noncorrosive. - Answer- A. do not conduct electricity.