CR-21 LANDSCAPES AND
IRRIGATION LATEST UPDATE
VERIFIED QUESTIONS & DETAILED
EXPLANATIONS GRADED A+
Professional Academic Assistance Services
What thickness in millimeters of pavers is used for residences?
A. .6
B. .5
C. .75
D. 63.5 - Answer: 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 - Answer: 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 - Answer: 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 - Answer: 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 - Answer: 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
IRRIGATION LATEST UPDATE
VERIFIED QUESTIONS & DETAILED
EXPLANATIONS GRADED A+
Professional Academic Assistance Services
What thickness in millimeters of pavers is used for residences?
A. .6
B. .5
C. .75
D. 63.5 - Answer: 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 - Answer: 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 - Answer: 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 - Answer: 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 - Answer: 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
