Kaplan- Lesson 9: Verical Transportation Flashcards
In regards to Stairs, safe practice dictates maintaining one of the three conventional relationships between riser and tread. What are the they?
Riser + Tread = 17 - 17.5 inches
Riser x Tread = 70 to 75 inches
2 Risers + Tread = 24 - 25 inches
The vertical distance between stair landings may not exceed ____. Headroom clearance should never be less than ____.
12 feet
6’ - 8”
Stairways more that ___ inches wide require intermediate handrails.
88”
T/F A 1:20 or less slope is not considered a ramp.
True
A 1:15 or more sloped ramp requires ______.
handrails
What is the maximum slope permitted for access for persons with disabilities?
1:12
What is the maximum slope permitted by the building code?
1:8 (typically found in theater aisles)
What is the required width of a handicapped ramp?
36”
What is the maximum rise of a ramp?
30”
Landings must be at least ___ feet long.
5’
Handrails are required on a handicapped ramp if the ramp is longer than ___ feet or has a rise greater than ___ inches.
6’; 6”
What are the two major types of elevators?
Hydraulic and Electric
Where are hydraulic elevators used?
Low rise buildings (max of 5 stories or 50’).
T/F Electric elevators cost more than Hydraulic.
True.
Hydraulic cost less because of their simplicity.
In an electric elevator the motor and drum assembly that moves the elevator car is called a ____________. What are the two types?
Traction machine.
Geared or gearless
Gearless machines are used for ____ speed installations, while geared machines are used for ____ speed applications.
high; low
What does the governor do in regards to an elevator?
Measures and limits the elevator speed by means of the control panel.
A small office building normally requires a minimum size elevator car that is rated at _____ pounds and has a car that is ___ x ___.
2,500 lbs; 5’ x 7’
What is the rule of thumb for determining elevator speed?
1.6 x Rise in feet + 350.
What elevator operating system answers all calls in the direction of the car’s travel?
Selective-Collective
What elevator operating system answers the first button pressed and has no ability to store calls?
Single- Automatic Operation
How big should an elevator be in a hospital?
5’-4” x 8’-4” and have a capacity of 3,500 lbs.
The normal angle of incline of an escalator is _____.
30 degrees.
What are the two standard widths of escalators?
32” and 48”
The maximum usable speed of an elevator is generally limited by
A. considerations of safety
B. car capacity
C. counterweight/ load ratio
D. building height.
D. building height.
In the design of a three-story commercial building with a max height of 45’, the architect wishes to have a constant roof silhouette with no projections above the 4’ high parapet. Consequently, the architect should choose a(n)
A. electric elevator with geared traction and operating machinery at the basement level.
B. gearless electric elevator with operating machinery in a 4’ high penthouse.
C. hydraulic elevator with operating machinery in a 4’ high penthouse.
D. hydraulic elevator with operating machinery located in the elevator pit.
D. hydraulic elevator with operating machinery located in the elevator pit.
The recommended speed of a passenger elevator in a 20-story building should be about
A. 200 feet per minute.
B. 300 feet per minute.
C. 800 feet per minute.
D. 1,000 feet per minute.
C. 800 feet per minute.
Every fire door that is part of a fire stairway exiting system must open
A. in the direction of travel.
B. into the enclosed stairway.
C. toward the flight leading down.
D. toward the building exterior.
A. in the direction of travel.
In which of the following ways do freight elevators generally differ from passenger elevators. Check all that apply.
A. they are never used by people. B. they are slower. C. they have greater weight capacity. D. they require fewer safety features. E. their doors operate differently. F. they are physically larger.
B. they are slower.
C. they have greater weight capacity.
E. their doors operate differently.
In order to connect two levels whose difference of elevation is two feet, a handicapped ramp must be at least
A. 10’ long
B. 12’ long
C. 24’ long
D. 30’ long
C. 24’ long
What safety device on an electric elevator provides life safety protection in the event of a power failure?
A. a governor
B. an automatic brake
C. the interlocks
D. the car bumpers
B. an automatic brake
The principal advantage in the use of moving ramps is
A. speed
B. comfort
C. safety
D. convenience
A. speed
In determining the total number of elevators required in a new building, an architect should consider the
I. total number of floors. II. estimated volume of traffic. III. number of hours of operation. IV. elevator roping system V. elevator car size.
A. II & V
B. I, III, & IV
C. I, II, & V
D. II, III, IV, & V
C. I, II, & V
I. total number of floors.
II. estimated volume of traffic.
V. elevator car size.
Escalators are most effectively used in situations that require
A. low cost
B. high speed
C. considerable life safety
D. considerable user capacity
D. considerable user capacity
