CR-21 Landscapes and Irrigation AZROC
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update
1. What kind of screw resists rusting?
a) steel
b) Phillips
c) brass
d) fine thread - Correct Answer: Brass
2. "Weep holes" may be utilized in which of the following methods of change
in site grading?
a) stone rip rap
b) timber cribbing
c) retaining walls
d) earth embarkment - Correct Answer: Retaining walls
3. All piping used for gray water shall be marked_____
a) danger-unsafe water
b) non-potable
c) bad water
d) reclaimed water - Correct Answer: Danger-Unsafe Water
4. In the construction of a pond, what is the function of a weir?
, a) control flow of water from upper to lower pools
b) direct the flow of water
c) direct the flow of water from the lower to the upper pool
d) make the water fall away from the face of the wall - Correct
Answer: Control flow of water from upper to lower pools
5. How far apart should wood planks be installed for expansion?
a) 1/8 to 1/4 inch
b) 3/8 to 7/16 inch
c) 1/16 to 1/8 inch
d) 1/2 to 3/4 inch - Correct Answer: 1/8 to 1/4 inch
6. What is the proper method for installing a wood fence on a slope?
a) grade the area
b) step the fence
c) follow the slope
d) step the slope - Correct Answer: step the fence
7. You need to trench 50 feet along a utility line. A trenching machine
excavates 5 foot in 30 seconds to 1 minute. The trench should be dug?
a) slowly and carefully over approximately 5 minutes
b) by hand
c) last
d) in less than 2 minutes - Correct Answer: By hand
8. What is the spacing for metal joint bracing of a masonry wall?
a) every 18 inches
b) every 12 inches
c) the entire length of the wall
, d) every 6 inches - Correct Answer: The entire length of the wall
9. What effects does higher pressure have on wire size?
a) it has no effect
b) increases amps needed
c) increases voltage needed
d) decreases amps needed - Correct Answer: increases amps
needed
10.Which finish is best used when subject to regular dampness?
a) keeness cement finish
b) Portland cement plaster finish
c) putty finish
d) sand finish - Correct Answer: Portland cement plaster finish
11.Fertilizer consists of______
a) nitrogen, phosphoric acid and potassium
b) nitrogen, oxygen and carbon
c) nitrogen, phosphoric acid and potash
d) bone meal, ammonia and organic filler - Correct Answer:
Nitrogen, phosphoric acid and potash
12.On a long run over 100 feet from a low voltage transformer, what size wire
would be best suitable?
a) 18-2
b) 10-2
c) 12-2
d) 16-2 - Correct Answer: 12-2
, 13.what is fixed reference point called when doing a survey?
a) landmark
b) reference position
c) rod position
d) benchmark - Correct Answer: benchmark
14.You have 2 BCY of sand, after compaction you will have?
a) 3.0 CCY
b) 1.96 CCY
c) 1.75 CCY
d) 2.24 CCY - Correct Answer: 1.96
CCY of sand is 0.95
2*0.95 = 1.96
15.What technique is used for planting trees but is not normally used when
planting shrubs?
a) watering
b) staking
c) mulching
d) soil conditioning - Correct Answer: staking
16.What is the preferred slope for a brick paver walkway in a well-drained
area?
a) 1/8 inch to 1/4 inch
b) 3/8 to 1/2 inch
c) 1/4 to 3/8 inch
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update
1. What kind of screw resists rusting?
a) steel
b) Phillips
c) brass
d) fine thread - Correct Answer: Brass
2. "Weep holes" may be utilized in which of the following methods of change
in site grading?
a) stone rip rap
b) timber cribbing
c) retaining walls
d) earth embarkment - Correct Answer: Retaining walls
3. All piping used for gray water shall be marked_____
a) danger-unsafe water
b) non-potable
c) bad water
d) reclaimed water - Correct Answer: Danger-Unsafe Water
4. In the construction of a pond, what is the function of a weir?
, a) control flow of water from upper to lower pools
b) direct the flow of water
c) direct the flow of water from the lower to the upper pool
d) make the water fall away from the face of the wall - Correct
Answer: Control flow of water from upper to lower pools
5. How far apart should wood planks be installed for expansion?
a) 1/8 to 1/4 inch
b) 3/8 to 7/16 inch
c) 1/16 to 1/8 inch
d) 1/2 to 3/4 inch - Correct Answer: 1/8 to 1/4 inch
6. What is the proper method for installing a wood fence on a slope?
a) grade the area
b) step the fence
c) follow the slope
d) step the slope - Correct Answer: step the fence
7. You need to trench 50 feet along a utility line. A trenching machine
excavates 5 foot in 30 seconds to 1 minute. The trench should be dug?
a) slowly and carefully over approximately 5 minutes
b) by hand
c) last
d) in less than 2 minutes - Correct Answer: By hand
8. What is the spacing for metal joint bracing of a masonry wall?
a) every 18 inches
b) every 12 inches
c) the entire length of the wall
, d) every 6 inches - Correct Answer: The entire length of the wall
9. What effects does higher pressure have on wire size?
a) it has no effect
b) increases amps needed
c) increases voltage needed
d) decreases amps needed - Correct Answer: increases amps
needed
10.Which finish is best used when subject to regular dampness?
a) keeness cement finish
b) Portland cement plaster finish
c) putty finish
d) sand finish - Correct Answer: Portland cement plaster finish
11.Fertilizer consists of______
a) nitrogen, phosphoric acid and potassium
b) nitrogen, oxygen and carbon
c) nitrogen, phosphoric acid and potash
d) bone meal, ammonia and organic filler - Correct Answer:
Nitrogen, phosphoric acid and potash
12.On a long run over 100 feet from a low voltage transformer, what size wire
would be best suitable?
a) 18-2
b) 10-2
c) 12-2
d) 16-2 - Correct Answer: 12-2
, 13.what is fixed reference point called when doing a survey?
a) landmark
b) reference position
c) rod position
d) benchmark - Correct Answer: benchmark
14.You have 2 BCY of sand, after compaction you will have?
a) 3.0 CCY
b) 1.96 CCY
c) 1.75 CCY
d) 2.24 CCY - Correct Answer: 1.96
CCY of sand is 0.95
2*0.95 = 1.96
15.What technique is used for planting trees but is not normally used when
planting shrubs?
a) watering
b) staking
c) mulching
d) soil conditioning - Correct Answer: staking
16.What is the preferred slope for a brick paver walkway in a well-drained
area?
a) 1/8 inch to 1/4 inch
b) 3/8 to 1/2 inch
c) 1/4 to 3/8 inch
