Chapter 19 Lawn Sprinkler Systems Flashcards
Connections to water Distribution system
Need this to connect to the potable water distribution system
Approved backflow preventer
1901
Electrical Specifications
At this length of roll, electrical wiring for sprinkler systems needs to go from a minimum 18 gauge UL approved underground feed multi strand to a 14 gauge UL approved underground feed wire.
500 feet
1902
Electrical specifications
Underground connections need to be made with
An approved waterproof connection
1902
Electrical Connections
At these voltages a blank must be called
12 and 24
Lawn sprinkler contractor
1902
Electrical specifications
All controllers with a _________ require hard wiring directly into circuit wiring installed by a _____. Also needs to have this installed at the controller.
Internal transformer
Liscensed electrician
Disconnect switch
1902
Electrical Specifications
All ___________ need to be installed in valve boxes
All underground electrical or hydraulic control valves
1902
Electrical Specifications
Exposed, above grade wires before entering a structure shall be encased in a __________
Approved electrical raceway
1902
Electrical specifications
When master valves are installed in a building
Shall be brass and operated by a 24 volt solenoid
1903
Minimum design standards
- Prevent ________
- System velocity not to exceed _________
- Static pressure not to exceed ________
- Overspray
- 5 feet per second
- 80 Paige
1903
Minimum design standards
Operating pressures fall between these ranges
Fixed heads______
Rotary heads_______
15-30 psi
40-70 psi
1903
Minimum design standards
Head spacing
- Areas greater than 10 ft _______ pattern and ____
- Areas less than 10 ft designed for _____. EXCEPTION
- Whenever possible ______
- Square or triangle and minimum head to head coverage
- Minimum head to head coverage
EXCEPTION: drip emitters or. Bubblers - Matched precipitation rates
1904
Materials and specifications
Pressure main lines shall be at least_______ and installed at a minimum depth of __________
160 psig polyvinyl chloride pipe
Eight inches
1904
Materials and specifications
Lateral lines and control valves shall be at least___________ or ____________ and installed at a depth of ___________
- 80 Psig polyethylene pipe
- Polyvinyl chloride pipe
- 8 inches
1904
Material specifications
All polyvinyl chloride pipe shall be _________ or __________
- Ring tight
2. Solvent welded
1904
Material specifications
All polyethylene pipe shall be installed with __________ using __________ made of ________ and clamped over the ___________.
- Polyvinyl chloride insert fittings
- Pinch
- Screw clamps
- Barbed portion
1904
Materials and specifications
All PVC larger than ______ shall be ______ with _______
- One inch
- Double clamped
- One clamp directly over the barbs and one clamp behind the barbs
1904
Materials and specifications
Saddles may be used if:
1.
2. Saddle is part is made of ____ or ____ with ___ or ______
- Gasket is part of the saddle
And
- Brass or plastic material, stainless steel or brass screws
1904
Materials and specifications
Underground control valves to be manufactured of ________
- A non-corrosive material
1904
Materials and specifications
All underground lawn sprinkler heads shall be setback at least_______ from the ________ or _______ of any _____ or _______
- 2 feet
- Curb or road surface
- Public street
- Right-of-way
1905
Valves and controls
All single-family lawn sprinkler systems and all other systems of ______ with a ____ may be equipped with _______
- 50 heads or less
- 1 inch or smaller
- Pressure Vacuum Breaker
1905
Valves and controls
All single-family lean sprinkler systems and all other systems of _______ with a _____ may be equipped with a _______
- 50 heads or less
- 1 inch or smaller tap
- Pressure vacuum breaker
1905
Valves and controls
All other instillations shall require a ______
- Reduced principle backflow preventer assembly
1905
Valves and controls
All PVBs shall be installed________
- Outside of the building
1905
Valves and controls
A reduced pressure backflow preventer assembly can be installed inside a building if
- Approved drainage is provided
1905
Valves and controls
- Copper pipe shall be run froM the ______ to approximately _______. If the backflow assembly is _______ the copper pipe shalll _____ to the building at least _____ from the building.
- ________ shall not be allowed on pressurized main line.
- Discharge side of the backflow preventer
- 8 inches below grade.
- Within 3 feet of the building foundation
- Continue perpendicular
- At least 3 feet
- Atmospheric Vacuum Breakers
49-1905
Valves and controls
Any sprinkler system that has a _______ attached you it must have a ______ installed according to the code.
- Chemical or fertilizer injection system
2. Reduced pressure principle backflow assembly
