IRRIGATION Flashcards Preview

Plumbing 4th Year 2021 BC CANADA > IRRIGATION > Flashcards

Flashcards in IRRIGATION Deck (20)
Loading flashcards...
1

A 3/4" service line and a 5/8" water meter at 45 psi static pressure will supply a volume
of U.S. gallons per minute.

A 3/4" service line and a 5/8" water meter at 45 psi static pressure will supply a volume -
of 7 US gallons per minute

2

What is the increase in available water supply in US gallons at 55 psi if a 3/4" water
service has 5/8" water meter replaced with a 3/4" water meter?

2Usgpm

3

Define static pressure

Static pressure is the pressure within a building when no water is flowing

4

What is the difference between static and dynamic pressure?

Static pressure is the pressure within a building when no water is flowing, while
dymanic pressure is the measurement of pressure while water is flowing

5

An alternative method of determining available water supply, rather than using
water meter and service pipe sizes, is the

An alternative method of determining available water supply, rather than using the
water meter and service pipe size, is the bucket test.

6

The device that activates the control valve is the, or

The device that activates the control valve is the control panel or timer

7

All heads that are used on one zone should be:
a) popup style
b) geardrive
c) the sametype
d) the same flowrate

c) the same type

8

To determine the layout of the heads within the imgation system, prepare a
showing the locations of buildings, sidewalks, driveways and areas
to be irrigated.

To detemine the layout of the heads within the irrigation system, prepare a "site"
drawing showing the locatious of buildings, sidewalks, driveways and areas to be
irrigated

9

When irrigation heads are installed for a vegetable garden, the heads should be
placed on
foliage.
to prevent interference with the spray pattern by the plant

When irrigation heads are installed for a vegetable garden, the heads should be
placed on RISERS to prevent interference with the spray pattern by the plant foliage

10

The two most common piping materials used for irrigation systems are
for manifolds and for laterals.

0. The two most common piping materials used for irrigation systems arePVC for
manifolds and POLYURATHANE for laterals

11

Control valves used with a timer are referred to as either or
valves

Control valves used with a timer are referred to as either ;electronic or solenoid;
valves.

12

Irrigation system layout and design should allow for winterizing of the system through the placement of at the lowest points or with
the removal of water through the heads with the use of

Imgation system layout and design should allow for the winterizing of the system
through the placement of 'drain valves' at the lowest points or with the removal of
water through the heads with the use of 'compressed air'

13

A/an head is commonly used in flowerbeds and planters at the lowest points for spot watering.

A BUBBLER head is commonly used in flowerbeds, planters and for spot watering

14

A/an head moves by the water passing through the head, driving gears that propel the head.

A ROTATING head moves by the water passing through the head, driving gears that
propel the head.

15

A/an head moves by the water passing through the head, hitting a trip arm that propels the head

An IMPULSE head moves by the water passing through the head hitting, a trip arm that
propels the head.

16

A/an can be connected to a control panel to
interrupt the watering pattern during wet weather.

A RAIN SENSOR can be connected to a control panel to intemipt the watering pattern
during wet weather

17

. A/an , , can only be installed
downstream of the control valve to provide cross-connection control.

A atmospheric vacuum breaker can only be installed downstream of the control
valve to provide cross-connection control.

18

A pressure vacuum breaker must be installed inches or
mm above the highest point through which water might enter an irrigation head

A pressure vacuum breaker must be installed 12 inches or 300 mm above the highest
point through which water might enter an imgation head.

19

A/an is a non-testable device that may be permitted in
some jurisdictions for installation on the service pipe to a residential imgation system
with no added treatment.

A DUAL CHECK is a non-testable device that may be pemitted in some jurisdictions for
installation on the service pipe to a residential irrigation system with no added
treatment.

20

A/an backflow
preventer must be installed on a system that incorporates an automatic injection
system for fertilizer

A reduced pressure principle backflow preventer must be installed on a system that
incorporates an automatic injection system for fertilizer.