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Building Construction 4th Edition > Chapter 4 > Flashcards

Chapter 4 Flashcards

1
Q

Building codes have traditionally required a minimum of one___for stair serving buildings five stories or higher

A

Smoke proof stair enclosure

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2
Q

More recently codes also require protection for stairs serving floor levels MORE THAN___below the level of exit discharge

A

30 feet

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3
Q

This type of smoke proof enclosure protects the stairway enclosure and provides a means of smoke ventilation before the smoke enters the stair enclosure

A

Passive

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4
Q

These vestibules are also pressurized to assist in keeping smoke out of the stairway

A

Active smoke proof and closure

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5
Q

These enclosures are accessed through a vestibule or an exterior balcony

A

Passive smoke proof enclosure

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6
Q

Building codes typically allow the use of open stairs in buildings only when?

A

They connect no more than two adjacent floors above the basement level

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7
Q

The stairs are naturally ventilated on one or more sides

A

Exterior stairs

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8
Q

Stairs that are not part of the means of egress are often referred to as?

A

Convenience

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9
Q

Buildings that are _______ in height may be required to include one stairway that extends to the roof for access to mechanical equipment and as identified by signage in the stairway

A

4 or more

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10
Q

A primary safety hazard at conveyor penetrations during a fire

A

Incomplete door or shut or closure

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11
Q

Passenger elevators design to also carry freight

A

Service elevators

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12
Q

Elevators that carry people

A

Passenger elevators

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13
Q

Elevators Carry resources that may be bulky or heavy

A

Freight elevators

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14
Q

These elevators do not have brakes

A

Hydraulic elevators

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15
Q

Historically, the practical upper limit for hydraulic elevators was about?

A

6 stories

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16
Q

This elevator style is intended for cargo use

A

Dumbwaiter

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17
Q

For Carmen styles of elevators are:

A

Drum elevators. Traction elevators. Machine room less elevators. Dumb waiters.

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18
Q

These elevators are obsolete and only found in very old structures or in use as freight elevators

A

Drum

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19
Q

These elevators are the most common type of elevator in buildings over six stories

A

Traction

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20
Q

Electrical circuit and watch the current can move through the circuit in both directions and the flow can be constantly reversing

A

Alternating current

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21
Q

Electrical circuit in which the current moves through the circuit in only One Direction

A

Direct current

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22
Q

The brakes do not play any part in actually stopping the elevator car. The motor stops the car and then brakes are applied to hold the car in place

A

Elevators with DC motors

23
Q

These elevators historically were drawn with ropes and used to move food from the kitchen to upper floors and occupancy is including: restaurants, schools, hospitals, retirement homes

A

Dumbwaiters

24
Q

Tapered pairs of steel jaws that wedge against the guard rail‘s and bring the elevator to a stop. These are designed to stop a freefalling car

A

Elevator safeties

25
Q

If the car continues to accelerate, the switch trips the over speed switch and applies the car safeties

A

Speed reducing switch

26
Q

Elevator hoistway enclosures usually are required to be a fire rated assembly with_hour rating, depending on the height of the building

A

One or two hour rating

27
Q

Elevator hoistwsy:

In a low rise buildings, the entire hoistway enclosure may consist of?

A

Gypsum, cement block, or other easily penetrating material

28
Q

HVAC-

DUCT DETECTORS Are typically provided for fans with capacities_____to stop these systems under fire conditions and minimize unwanted smoke commitment

A

Exceeding 2000 ft.³ per minute

29
Q

HVAC-

Codes regulate the location of air intakes to minimize drawing in the following hazards:

A

Combustible, flammable or toxic substances. Vehicle exhaust. Smoke from fires a nearby structures

30
Q

HVAC-

The cooling equipment hazards are limited mainly to hazard associated with the?

A

Refrigerant and the electrical equipment

31
Q

The distribution component of the HVAC system

A

Air ducks

32
Q

Unoccupied space within the building through which air flows back to the heating ventilation and air-conditioning system. Normally immediately above the ceiling and below an insulated roof or the floor above

A

Return air Plenum

33
Q

Device that automatically restrict the flow of smoke through all or part of an air handling system; usually activated by the buildings fire alarm signaling system

A

Smoke damper

34
Q

Device that automatically restrict the flow of air through all or part of an air handling system; usually activated by the buildings fire alarm signal in the system or fusible links

A

Fire damper

35
Q

Ventilation system designed to remove stale air, smoke, vapors, or other airborne contaminants from an area.

A

Exhaust system

36
Q

A building heating and cooling system that uses air as the heat transfer medium

A

Forced air system

37
Q

Many HVAC systems distribute conditioned air through the building from one or more mechanical equipment rooms via ductwork. Such systems are generally known as?

A

Forced air systems

38
Q

Strategic use of passive and active devices in systems to direct or stop the movement of smoke and other products of combustion

A

Smoke control

39
Q

The following systems can signal HVAC controls to transfer to smoke control mode:

A

Smoke detectors. He detectors. Sprinkler water flow switches.

“Automatic smoke control”

40
Q

Smoke control systems-when a system has both automatic and manual capability,___shall take priority over___

A

Manual operation shall take priority over the automatic control

41
Q

These hatchways often open a minimum of 4 feet in either direction

A

Heat and smoke events

42
Q

Non-combustible barriers or dividers hung from the ceiling in large open areas that are designed to minimize the mushrooming affect of heat and smoke and impede the flow of heat. Also known as curtain boards in draft stops

A

Draft curtains

43
Q

Roof vents in a sprinkler building may be of maximum value in removing products of combustion during the ?

A

Final or over hall stages of a fire

44
Q

Fully enclosed escape stairway the exit is directly onto a public way

A

Smoke tower

45
Q

One style of smoke control for stairways is the use of a___separated from a building Corredor by a vestibule that is open to the atmosphere

A

Smoke tower

46
Q

In a___, the airflow into the stairwell can be adjusted depending on the number of doors that may open

A

Compensated system

47
Q

Electrical equipment: high-voltage equipment is defined as operating at?

A

600 V or higher

48
Q

Low-voltage equipment operator?

A

Less than 600 V

49
Q

Device that uses coils and magnetic fields to increase step up or decrease step down in coming voltages

A

Transformers

50
Q

Most modern dry transformers are designed for use inside?

A

Sprinkler spaces

51
Q

Transformers containing PCBs are required to?

A

Be labeled

52
Q

Material that is poor conductor of electricity, usually added to tools used to handle energized electrical wires or equipment

A

Dielectric

53
Q

High temperature luminous electric discharge across a gap or through a medium such as charred insulation

A

Arc

54
Q

Toxic compounds found in some older oil filled electric transformers

A

Polychlorinated biphenyls

Building Construction 4th Edition (12 decks)

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