Water Supply Infrastructure CHAP3 ADD4 Flashcards
Yellow hydrants on parkways/expressways, they must be turned on fully at the curb valve approximately — turns ——- using a curb valve key in order to be used. 2.3.3.
18 turns
Clockwise
Red Air Cock hydrants on— diameter, or greater mains in strategic locations, high and low pressure points. And are considered —- sources of water for the fire department.
2.3.4
30” diameter or greater
Excellent sources of water
Red satellite water system hydrants, twin hydrant arrangement on large mains for rapid and adequate source of water for?
PS they have 2 4 1/2 outlets
2.3.5.
Satellite units
Hydrant markings
A white line under the barrel number indicates? 2.4.1
Dead End main and is only supplied from one direction which may limit water flow.
The curb valve key ( to shut off) is turned——-wise —- full turns. There will not be a noticeable decrease in water flow until about — turns are made. 2.4.3.
Counterclockwise
17 full turns
12 full turns
Automatic sprinkler systems are supplied by ——- AND ————.
3.1.1.
City water main AND at least one other source.
——— pipe systems are installed whether it is danger of freezing, and contain air or sometimes —— in the riser and piping. 3.1.3
Dry pipe
Nitrogen
———- systems are often found in aircraft hangers or where large quantities of flammable liquids are used in industrial process
3.1.4
Deluge system
——— systems are most often found in computer rooms where other sensitive electronic equipment is used?
3.1.5
Pre-action system
T/F
Combination sprinkler systems are usually wet. 3.1.6.
False,
wet or dry
What kind of sprinkler systems are commonly found in cellers and sub cellars of older commercial buildings? 3.1.7
Non-automatic sprinkler systems.
What color:
Automatic sprinkler system ?
Non-automatic sprinkler system ?
Combination ?
3.3
Green
( I have automatic sprinklers that is why my grass is green.)
Aluminum colored
Yellow
( Give me the combo meal at McDonalds, the ARCHES)
Air pressure systems are required in buildings under construction that are taller than? 4.4.3.
Taller than 75 feet
PS has its own pressurized dedicated air compressor.
Express piping systems.
The high zone riser is also known as ——?
4.4.6
Express piping
The post indicator valve (PIV) will generally be located outside and in close proximity to the building and often found in the direction of the building and that contains the? 4.4.7.
Gravity tank for the system
PIV’s are open it will supply that building in the complex.
Standpipe is out of service. The Siamese should get what color disc? 4.5.2
White
Standpipe system is partially out of service what color disk?
4.5.2
Blue
Yellow discs should not be used for FDC.
Post indicator valves exist in interconnected building systems and are used to isolate Building from the rest of the system. They are painted red. How do you know when the system is open or closed? 4.5.4
You’ll see the word OPEN or the word CLOSED visible on the face of the valve
For standpipe systems in an interconnected building complex, how many gravity tanks will supply the system? 4.5.5.
1 tank
PS in mega high-rises you might have additional gravity tanks. And might be found inside the building.
What do you find at the top of a standpipe riser? 4.5
Roof manifold
Three outlet connections is used for testing water flow in the standpipe. It may be used by fire companies to supply a hoseline at the roof level.
Are PRV’s removable?
4.5.8
Page 12
No and can not be adjusted.
PS: don’t mix this up with PRD’s
