Chapter 4

Question 1

Which of the following classifications is most commonly used for wiring electrical irrigation valves underground?

Answer 1

UF

Question 2

Which of the following wire classifications would NOT be used for wiring electrical irrigation valves?

NOTE: Remember the type which does not contain the letter U (underground

Answer 2

THHN

Question 3

How is a vapor barrier rated?

Answer 3

Perm Values.

Question 4

What is the minimum slope on a concrete patio to allow for drainage

Answer 4

1/8”

Question 5

Properly installed exterior lighting requires what footing to prevent damage to the fixture from heaving?

Answer 5

Frost

Question 6

What are standards placed over or inserted into the footing?

Answer 6

Anchor Bolts

Question 7

What do you see to cut PVC pipe?

Answer 7

Pipe Cutter or hacksaw

Question 8

Installation of many utilities are restricted to a licensed specialist plumber or irrigation specialist but the landscape contractor may be called upon to complete what?

Answer 8

Hydrant installation and supply lines.

Question 9

Who must inspect all public and private water systems?

Answer 9

Health Department

Question 10

Freeze point hydrants, the water line buried below what?

Answer 10

Below frost depth

Question 11

When establishing an irrigation system an adequate available what is required?

Answer 11

Water Supply

Question 12

How do you measure adequate water pressure?

Answer 12

Pounds per square inch- PSI

Question 13

What is the best philosophy?

Answer 13

Protect the plants that are currently in good health.

Question 14

In the case of photocells, controllers must be located in an area that receives ample sunlight. This may necessitates that transformers with built-in controllers be located where?

Answer 14

Outside a structure.

Question 15

What reduces voltage drop?

Answer 15

Short cable runs

Question 16

What type of tracks should be used on equipment?

Answer 16

Rubber Tracks

Question 17

A “water sprout” is a growth that ___________?

Answer 17

Develops along the trunk of the tree

Question 18

A pressure type vacuum breaker is unlike an atmospheric vacuum breaker because it __________?

Answer 18

Can be pressurized on inlet an outlets sides.

Question 19

What motion do you apply when applying the primer?

Answer 19

Scrubbing motion

Question 20

The best time to plant native desert species is _________?

Answer 20

Fall

Question 21

Most desert plants roots rot if grown in poorly drained soil. Planting during the _________ seasons permit strong roots to develop?

Answer 21

Cool

Question 22

___________ is performed to achieve the desired landform.

Answer 22

Rough Grading

Question 23

Connecting cable to lamp base, a metal prong must penetrate where?

Answer 23

Each Side of the cable for light to work

Question 24

The lower basin contains the _________ the recirculated water to the top of supply the falls

Answer 24

Pump

Question 25

The most common wire gauges for kits are often _________?

Answer 25

18 Gauge

Question 26

_________ electrical systems require an alternating current _______ outlet to provide power.

Answer 26

DC, AC

Question 27

Who's authorization does a sub contractor need to begin work?

Answer 27

General Contractor

Question 28

What type of work does not qualify for additional pay?

Answer 28

Restoration work

Question 29

Workers should be aware of any plant that may trigger dermatitus when contracted. Poisonous plants should be removed or avoided what should be used?

Answer 29

Protective clothing to avoid direct contact

Question 30

Learning how to lift and following simple rules will assist in reducing back injury from landscape construction activity. What should you do before beginning work?

Answer 30

Stretching exercises

Question 31

Trenches should be at least how wide?

Answer 31

4-6 Inches

Question 32

What kind of fences will prevent eroded soil from passing into a protected area?

Answer 32

Silt Fence

Question 33

When heaving occurs, it is advisable to __________ the lawn to insure the roots will not dry?

Answer 33

light Roll

Question 34

Although the spacing for sprinklers heads may very because of flow static pressure for small water supply, the standard throughout the industry is _________ feet triangular spacing?

Answer 34

20 Feet

Question 35

What is the secondary consideration when planting desert landscaping on a slope?

Answer 35

How the roots of plants grow

Question 36

Where is the light for shadow lighting located?

Answer 36

In front of the plant

Question 37

A _______ allows the user to control the lights or turn lights on at dusk.

Answer 37

Controller

Question 38

Before construction can proceed what is next?

Answer 38

Layout of critical dimensions and grade

Question 39

What do you use to remove the debris

Answer 39

Skid-steer

Question 40

What are very large projects stripped with?

Answer 40

Paddle Scraper

Question 41

What are the two steps used to remove shrubs?

Answer 41

Cut and removed, with crown or root dugout and removed

Question 42

Trees over 30' in height or 10' in diameter who do you call?

Answer 42

A professional remover

Question 43

Which of the following soils will drain the slowest?

Answer 43

Clay

Question 44

Infiltration systems of soil depend on the slope and

Answer 44

Amount of water applied

Question 45

A grass parkway is 4'-10' wide. The sprinkler heads would be placed ___________?

Answer 45

Along the curb, with a single row of part-circle sprinklers