Chapter 4: Building Systems

<p>To serve as a continuous and unobstructed path of exit travel (C)</p> Signup and view all the answers

<p>They provide egress into different corridors based on odd or even-numbered floors (D)</p> Signup and view all the answers

<p>To prevent the spread of smoke and fire into the stair enclosure (A)</p> Signup and view all the answers

<p>They pose safety risks and may fail unexpectedly (C)</p> Signup and view all the answers

<p>Active protection uses moving parts and requires power, while passive uses fixed components (B)</p> Signup and view all the answers

<p>They may lead to smoke leakage and fire spread (C)</p> Signup and view all the answers

<p>$100$ feet per minute ($fpm$) or $30$ meters per minute ($m/min$) (B)</p> Signup and view all the answers

<p>The small radius of the full circle must be greater than or equal to twice the widest part of the stair tread. (D)</p> Signup and view all the answers

<p>Springs in folding stairs lose tension gradually when exposed to heat. (D)</p> Signup and view all the answers

<p>To provide access to very small spaces. (B)</p> Signup and view all the answers

<p>Many departments advise against using fixed ladders for firefighting due to weight limitations. (C)</p> Signup and view all the answers

<p>To replace traditional coil springs for cheaper and more efficient functioning. (D)</p> Signup and view all the answers

<p>Hydraulic elevator with a deep well (C)</p> Signup and view all the answers

<p>Traction elevators (D)</p> Signup and view all the answers

<p>In the machine room (B)</p> Signup and view all the answers

<p>Act as shock absorbers at the bottom of the pit (A)</p> Signup and view all the answers

<p>Moving items between floors in small weight and size (D)</p> Signup and view all the answers

<p>Hydraulic elevators (B)</p> Signup and view all the answers

<p>Traction elevators (D)</p> Signup and view all the answers

<p>To provide vertical opening protection (D)</p> Signup and view all the answers

<p>During medical emergencies on upper floors (A)</p> Signup and view all the answers

<p>Open the door from a floor level above the recalled elevator to check the shaft for smoke infiltration (B)</p> Signup and view all the answers

<p>Noncombustible material with rated doors (A)</p> Signup and view all the answers

<p>To avoid dips or horizontal runs where grease may become trapped (D)</p> Signup and view all the answers

<p>To create and maintain a comfortable environment for occupants (B)</p> Signup and view all the answers

<p>To draw air from external sources into the system (B)</p> Signup and view all the answers

<p>To provide a pathway for heated or cooled air without ducted systems (A)</p> Signup and view all the answers

<p>Exhaust systems are designed to remove contaminants, while HVAC systems provide heating and cooling. (D)</p> Signup and view all the answers

<p>When improper implementation could lead to hazardous egress conditions during a fire (D)</p> Signup and view all the answers

<p>To restrict airflow in case of fire and maintain the integrity of fire-rated assemblies (A)</p> Signup and view all the answers

<p>Vary the airflow within the ductwork as needed (D)</p> Signup and view all the answers

<p>They create pathways for communication of heat and smoke through buildings (C)</p> Signup and view all the answers

<p>To act as an area of refuge if properly hardened (D)</p> Signup and view all the answers

<p>To secure the shaft for express elevators serving upper floors (D)</p> Signup and view all the answers

<p>To serve as a common discharge floor and transfer point for two elevator systems (D)</p> Signup and view all the answers

<p>Use of electronic interlocks to prevent movement with open doors (B)</p> Signup and view all the answers

<p>To allow passengers to move laterally from a stalled car to a functioning one (A)</p> Signup and view all the answers

<p>To act as a safety feature for individuals using the stairs (A)</p> Signup and view all the answers

<p>The vertical distance between the treads of a stairway (A)</p> Signup and view all the answers

<p>Scissor stairs (D)</p> Signup and view all the answers

<p>To start or end a flight of stairs (C)</p> Signup and view all the answers

<p>To protect individuals from falling off the sides (C)</p> Signup and view all the answers

<p>To reduce the energy needed to raise the elevator (C)</p> Signup and view all the answers

<p>Hydraulic elevators (B)</p> Signup and view all the answers

<p>Electromagnets that release in malfunctions (A)</p> Signup and view all the answers

<p>Mounting all components within the hoistway (D)</p> Signup and view all the answers

<p>Moving food between floors in buildings like schools (C)</p> Signup and view all the answers

<p>Springs losing tension rapidly when exposed to heat (C)</p> Signup and view all the answers

<p>To replace traditional coil springs due to their cost-efficiency (C)</p> Signup and view all the answers

<p>Resisting the effects of the products of combustion (C)</p> Signup and view all the answers

<p>To fit in a very small space like permit-required confined spaces (A)</p> Signup and view all the answers

<p>Tapered treads connecting to a single column (A)</p> Signup and view all the answers

<p>Activate the emergency brake and stop the escalator (B)</p> Signup and view all the answers

<p>To prevent smoke and fire from spreading through the vertical opening (C)</p> Signup and view all the answers

<p>Closely spaced sprinklers and draft stops (A)</p> Signup and view all the answers

<p>By adjusting fluid pressure in a cylinder containing a piston (C)</p> Signup and view all the answers

<p>Electric elevators employ hoisting cables or belts, while hydraulic elevators use fluid under pressure (D)</p> Signup and view all the answers

<p>Limited penetrations for light, fire protection, and environmental control, self- or automatic-closing fire-rated doors, separation from the rest of the building, and stairway vestibules (A)</p> Signup and view all the answers

<p>When they have unprotected openings in the building's outside wall near the stairs (A)</p> Signup and view all the answers

<p>To protect against the spread of smoke before it enters the stair enclosure (D)</p> Signup and view all the answers

<p>Because they are not safe or reliable for use in emergencies (D)</p> Signup and view all the answers

<p>Active enclosures pressurize during fire alarms while passive ones automatically close off ventilation systems (A)</p> Signup and view all the answers

<p>To maintain fire resistance and integrity with a rated assembly (D)</p> Signup and view all the answers

<p>To prevent heat, smoke, and combustion products from spreading during a fire (B)</p> Signup and view all the answers

<p>To act as a common discharge floor for two separate elevator systems (C)</p> Signup and view all the answers

<p>Automatic opening and closing when the car stops at a floor (A)</p> Signup and view all the answers

<p>To allow passengers to exit in case of mechanical failures (C)</p> Signup and view all the answers

<p>To avoid fire hazards and contain potential fires in the chutes (C)</p> Signup and view all the answers

<p>To suppress fires that may occur in the chutes (A)</p> Signup and view all the answers

<p>To limit the vertical spread of smoke and fire within the building (A)</p> Signup and view all the answers

<p>Delivering environmental control for occupants (D)</p> Signup and view all the answers

<p>Positioned to allow unrestricted air flow without drawing in hazards (B)</p> Signup and view all the answers

<p>As part of safety requirements to maintain fire-rated integrity (C)</p> Signup and view all the answers

<p>Regulating airflow within the ducts (A)</p> Signup and view all the answers

<p>Direct loss of air pressure if stairwell doors are opened near the air supply (B)</p> Signup and view all the answers

<p>They provide a more uniform airflow into the stairwell (D)</p> Signup and view all the answers

<p>They can influence how well the systems work (A)</p> Signup and view all the answers

<p>By enhancing the safety of building occupants during a fire (B)</p> Signup and view all the answers

<p>Having parallel air supply shafts to the stairwell (C)</p> Signup and view all the answers

<p>To ensure uniform flow of air into the stairwell (A)</p> Signup and view all the answers

<p>Provision of several discharge points along the stairwell (D)</p> Signup and view all the answers

<p>Greatly improving building occupants' safety during fires (B)</p> Signup and view all the answers

<p>It provides uniform airflow into stairwells. (B)</p> Signup and view all the answers

<p>The rate of heat release of the fuel. (C)</p> Signup and view all the answers

<p>It uses multiple points of supply air compared to one point in a Single-Injection System. (B)</p> Signup and view all the answers

<p>Achieving a balance between high pressure and occupant access. (A)</p> Signup and view all the answers

<p>Converting high-voltage electricity to appropriate building systems voltage. (B)</p> Signup and view all the answers

<p>Risk of hazardous Polychlorinated Biphenyls (PCB) in the oil. (C)</p> Signup and view all the answers

<p>Should be placed in rooms with 2-hour fire-rated construction. (D)</p> Signup and view all the answers

<p>Considering a mix of generators, batteries, or both for backup power. (C)</p> Signup and view all the answers

<p>To prevent the recirculation of smoke and aid in smoke removal (D)</p> Signup and view all the answers

<p>Supply of air to non-fire floors (B)</p> Signup and view all the answers

<p>Sprinkler waterflow switches (C)</p> Signup and view all the answers

<p>Complex coordination of multiple elements (D)</p> Signup and view all the answers

<p>Anticipated fire size (C)</p> Signup and view all the answers

<p>Use of dampers (A)</p> Signup and view all the answers

<p>To prevent recirculation and aid smoke removal (C)</p> Signup and view all the answers

<p>Heat detectors (B)</p> Signup and view all the answers

<p>Redirect airflow based on fire location (C)</p> Signup and view all the answers

<p>Eliminate the possibility of a detector outside the fire area being activated first (A)</p> Signup and view all the answers

<p>To vent smoke and heat from the building (B)</p> Signup and view all the answers

<p>To minimize the mushrooming effect of heat and smoke (B)</p> Signup and view all the answers

<p>They cause vents to open under nonfire conditions (D)</p> Signup and view all the answers

<p>They tend to soften and fall out from fire heat (B)</p> Signup and view all the answers

<p>By exhausting smoke from the building corridor (D)</p> Signup and view all the answers

<p>Pressurized stairwells use blowers to create higher pressure inside them than in the corridor (A)</p> Signup and view all the answers

<p>It supplies air to a stairwell at a single point using a fan (C)</p> Signup and view all the answers

<p>Automatically through spring-operated mechanisms triggered manually or by devices (D)</p> Signup and view all the answers

<p>Requiring dedicated floor space in buildings (A)</p> Signup and view all the answers

<p>Draft curtains minimize mushrooming effect of heat and smoke (D)</p> Signup and view all the answers