CR-21 Landscapes and Irrigation EXAM,
QUESTIONS WITH ACCURATE
ANSWERS | MULTIPLE CHOICES |!!
used for residences?
A. .6
B. .5
C. .75
D. 63.5
D. 63.5
Brick (paving brick, pavers). Rectangular fired clay brick with typical
dimensions of 4 inches x 8 inches x 2.5 inches thick. Available in a range of
colors, paving bricks have no mortar holes and an average strength of
approximately 5,000 PSI.
What is the length of a standard concrete block including the mortar joint?
A. 8 inches
B. 10 inches
C. 12 inches
D. 16 inches
,D. 16 inches
Sizes are usually given in their nominal dimensions.A unit measuring 7 5/8"
wide, 7 5/8" high, and 15 5/8"long is known as an 8" x 8" x 16" unit. The
mortar jointis intended to be 3/8" to fit the modular design basedon a 4"
module.
When should you seal the bottom of a piece of wood fencing?
A. If water pools under them
B. when within 5 feet of a sprinkler head
C. If there is less than 2 inches of clearance from the ground.
D. If it touches the earth
D. If it touches the earth
If the boards have to touch the earth, seal the board ends before you install
them.
How is transplant shock avoided?
A. NEED HELP WITH THIS CHOICE
B. Anti transpirants
C. increase water
D. Fertilize
,B. Anti transpirants
Antitranspirants, also called antidesiccants, are chemicals that reduce the
amount of water plants lose through transpiration. Antitranspirants are
useful because excessive water loss can result in transplant shock. They
normally act either to induce closing of the stomata or to cover the stomata
with a water-impermeable coating.
A trench has been prepared for a gray water irrigation lines, according to the
International Residential Code, what shall be the minimum depth of the
filter material beneath the perforated line?
A. 12 inches
B. 3 inches
C. 8 inches
D. 6 inches
D. 6 inches
Not less than 6 inches in depth of aggregate, ranging in size from 1/2 to 2-
1/2 inches (12.7 mm to 64 mm), shall be laid into the trench below the
distribution piping elevation.
A CR-21 licensee may install residential misting systems under what PSI?
A. 1000 psi
, B. 120 psi
C. 90 psi
D. 500 psi
A. 1000 psi
HARDSCAPING AND IRRIGATION SYSTEMS This classification allows the
licensee to install, alter, and repair:
Residential outdoor misting systems. Free standing or attached to existing
appurtenance, not more than 1000 PSI.
Blue Stake uses orange to mark which of the following?
A. Gas
B. Electric
C. Fiber Optics, Cable, Phone
D. Sewer
C. Fiber Optics, Cable, Phone
Electric Power Distribution - Safety Red Gas, Oil Distribution - High Visibility
Safety Yellow Telephone, Cable, Fiber Optics - Safety Alert Orange Water
Systems - Safety Precaution Blue Sanitary Sewer Systems - Safety Green
Reclaimed Water - Purple
What color is used to mark an area for locating utilities prior to excavations?
A. Green
QUESTIONS WITH ACCURATE
ANSWERS | MULTIPLE CHOICES |!!
used for residences?
A. .6
B. .5
C. .75
D. 63.5
D. 63.5
Brick (paving brick, pavers). Rectangular fired clay brick with typical
dimensions of 4 inches x 8 inches x 2.5 inches thick. Available in a range of
colors, paving bricks have no mortar holes and an average strength of
approximately 5,000 PSI.
What is the length of a standard concrete block including the mortar joint?
A. 8 inches
B. 10 inches
C. 12 inches
D. 16 inches
,D. 16 inches
Sizes are usually given in their nominal dimensions.A unit measuring 7 5/8"
wide, 7 5/8" high, and 15 5/8"long is known as an 8" x 8" x 16" unit. The
mortar jointis intended to be 3/8" to fit the modular design basedon a 4"
module.
When should you seal the bottom of a piece of wood fencing?
A. If water pools under them
B. when within 5 feet of a sprinkler head
C. If there is less than 2 inches of clearance from the ground.
D. If it touches the earth
D. If it touches the earth
If the boards have to touch the earth, seal the board ends before you install
them.
How is transplant shock avoided?
A. NEED HELP WITH THIS CHOICE
B. Anti transpirants
C. increase water
D. Fertilize
,B. Anti transpirants
Antitranspirants, also called antidesiccants, are chemicals that reduce the
amount of water plants lose through transpiration. Antitranspirants are
useful because excessive water loss can result in transplant shock. They
normally act either to induce closing of the stomata or to cover the stomata
with a water-impermeable coating.
A trench has been prepared for a gray water irrigation lines, according to the
International Residential Code, what shall be the minimum depth of the
filter material beneath the perforated line?
A. 12 inches
B. 3 inches
C. 8 inches
D. 6 inches
D. 6 inches
Not less than 6 inches in depth of aggregate, ranging in size from 1/2 to 2-
1/2 inches (12.7 mm to 64 mm), shall be laid into the trench below the
distribution piping elevation.
A CR-21 licensee may install residential misting systems under what PSI?
A. 1000 psi
, B. 120 psi
C. 90 psi
D. 500 psi
A. 1000 psi
HARDSCAPING AND IRRIGATION SYSTEMS This classification allows the
licensee to install, alter, and repair:
Residential outdoor misting systems. Free standing or attached to existing
appurtenance, not more than 1000 PSI.
Blue Stake uses orange to mark which of the following?
A. Gas
B. Electric
C. Fiber Optics, Cable, Phone
D. Sewer
C. Fiber Optics, Cable, Phone
Electric Power Distribution - Safety Red Gas, Oil Distribution - High Visibility
Safety Yellow Telephone, Cable, Fiber Optics - Safety Alert Orange Water
Systems - Safety Precaution Blue Sanitary Sewer Systems - Safety Green
Reclaimed Water - Purple
What color is used to mark an area for locating utilities prior to excavations?
A. Green
