CR-21 AZROC Test Prep Questions With Complete
Solutions
How many volts does an automated sprinkler system use
24
In the construction of a pond, what is the function of a weir?
control flow of water from upper to lower pools
What is the preferred method for plastering masonry?
3 coats
What formula determines the ratio of a slope?
Horizontal (run): Vertical: (rise)
What should be done if, upon arriving at jobsite, the substrate is
found to be defective
inspect the substrate and notify the owner in writting
What is the suggested test pressure for solvent cemented joints?
150% of water pressure
What should be a transformer with a photocell be installed
Where there is ample sun
An expansion joint in the outer wythe of a brick cavity is to be
provided on each side of an external corner if the wall is greater
then what length?
50ft
,What is the friction loss for 10 gallons per minute in 100ft of
3/4" pipe
4.30
You are going to pour a concrete pad that is 16' feet by 22' and
4" thick, how many cubic yards of concrete are needed?
4.3
Where is the natural point for a focal point
On the incurve
If you are going to leave the clippings of the cut grass, what
length should you cut at?
1/3 blade length
What is the minimum thickness of the exterior wall of a
firepalce?
8"
The sprinkler water passing through an electronic solenoid
diaphragm valve contains debris and the inlet port is blocked,
water cannot flow into the:
upper chamber and the valve would remain open
What is used to hold blocks together?
mortar
Placement of emitters should avoid direct contact with
The trunk or stem if the plant
Which of the following is the strongest wood?
, Bamboo
Many shrubs are planted for their flowering qualities and must
be pruned at the proper time to realize their maximum potential
for flowering. Spring flowering shrubs should be pruned when?
Early Spring
A concrete slab should be bull floated as soon as possible after
screeding
How do you prevent winter heaving of ground cover
Mulching
What do you do before grading?
check natural drainage
A CR-21 licensee may build a retaining wall up to what height?
3'
When planting a tree, what is the best method to help insure its
survival?
Back fill with native soil
When measuring the amount of fabric to use for a pond, you
should take the maximum length times?
Twice the depth plus three feet
Which principle of landscaping design deals with the size of
landscaping items?
Proportion
Solutions
How many volts does an automated sprinkler system use
24
In the construction of a pond, what is the function of a weir?
control flow of water from upper to lower pools
What is the preferred method for plastering masonry?
3 coats
What formula determines the ratio of a slope?
Horizontal (run): Vertical: (rise)
What should be done if, upon arriving at jobsite, the substrate is
found to be defective
inspect the substrate and notify the owner in writting
What is the suggested test pressure for solvent cemented joints?
150% of water pressure
What should be a transformer with a photocell be installed
Where there is ample sun
An expansion joint in the outer wythe of a brick cavity is to be
provided on each side of an external corner if the wall is greater
then what length?
50ft
,What is the friction loss for 10 gallons per minute in 100ft of
3/4" pipe
4.30
You are going to pour a concrete pad that is 16' feet by 22' and
4" thick, how many cubic yards of concrete are needed?
4.3
Where is the natural point for a focal point
On the incurve
If you are going to leave the clippings of the cut grass, what
length should you cut at?
1/3 blade length
What is the minimum thickness of the exterior wall of a
firepalce?
8"
The sprinkler water passing through an electronic solenoid
diaphragm valve contains debris and the inlet port is blocked,
water cannot flow into the:
upper chamber and the valve would remain open
What is used to hold blocks together?
mortar
Placement of emitters should avoid direct contact with
The trunk or stem if the plant
Which of the following is the strongest wood?
, Bamboo
Many shrubs are planted for their flowering qualities and must
be pruned at the proper time to realize their maximum potential
for flowering. Spring flowering shrubs should be pruned when?
Early Spring
A concrete slab should be bull floated as soon as possible after
screeding
How do you prevent winter heaving of ground cover
Mulching
What do you do before grading?
check natural drainage
A CR-21 licensee may build a retaining wall up to what height?
3'
When planting a tree, what is the best method to help insure its
survival?
Back fill with native soil
When measuring the amount of fabric to use for a pond, you
should take the maximum length times?
Twice the depth plus three feet
Which principle of landscaping design deals with the size of
landscaping items?
Proportion
