4. Building Systems Flashcards
Stairs not apart of the means of egress are referred to as ___ stairs
Convenience
$$$
___ stairs have an intermediate landing between floors and reverse direction at the point.
Return stairs
Building codes have traditionally requires a min of 1 ___ stair enclosure for stairs arriving buildings ____ stories or higher.
Smokeproof
5
More recently, codes also require protection for stairs serving floor levels more then __ ft below the level of exit discharge.
30
Building codes typically allow the use of open stairs in buildings only when they connect no more then ___ adjacent floors above the basement level.
Two
Escalator speed are standardized at ___ feet per second
100
___ elevators are the most common type of elevator in buildings over 6 stories.
Traction
And electric switch that terminates power before the elevator reaches the upper or lower limits of the hoist way.
Terminal device
Large springs or hydraulic cylinders and pistons located at the bottom of the pit that act as a shock observers should the terminal switch fail.
Buffers
Also known as the speed governor. They switch slows the drive motor it when an elevator start to exceed a safe speed
Speed reducing switch
Also connected to the speed governor. This which is activated if the speed reducing switch fails to slow the car sufficiently
Over speed switch
Tapered Pairs of steel jars that wedge against the guide rails and bring the elevator to a stop. Elevator safeties are designed to stop a free falling car
Car safeties
___ of more elevators must have a min of 2 hoist ways
4
The depth of a curtain board will vary depending on the nature of the hazard within an occupancy, but should not be less than ___% and not farther apart than ___ times the ceiling height.
20%
8x
High voltage equipment is defined as operating at ___ volts of higher
600
