Water & Light

Question 1

what is toxic to fish that small water features accumulate more of?

Answer 1

carbon dioxide

Question 2

what factors should be looked into when designing residential water features?

Answer 2

desired sound levels, local regulations, access to power

Question 3

which flexible pond liner has the longest life span on the prairies?

Answer 3

EPDM

Question 4

why would you choose to install a floating heater in a water feature?

Answer 4

to help fish overwinter, by allowing CO2 to be released

Question 5

what can you finish the edge of a water feature with?

Answer 5

pebbles, indigenous rock, complementary plant material

Question 6

how many direct hours of direct sunlight do hardy water lilies require?

Answer 6

5 -6 hours

Question 7

one of the steps in balancing the ecosystem in water features is?

Answer 7

add oxygenating plants to the pond

Question 8

which pond liner is susceptible to punctures and deterioration from UV rays

Answer 8

polyethylene

Question 9

to help keep water features in balance, what % of the surface should be covered?

Answer 9

50 - 75%

Question 10

how any days should chlorinated water sit before adding in fish and plants?

Answer 10

2 days

Question 11

if a single lamp fails during a low voltage system test, what should be done first?

Answer 11

test the failed lamp

Question 12

typical function of a bollard fixture?

Answer 12

lighting walkways or driveways

Question 13

which type of lighting highlights the texture of a fence?

Answer 13

accent lighting

Question 14

what is a GFI - ground fault indicator

Answer 14

Provide protection against electrical shock. Shut off power if a bare wire touches a ground object. Monitors the flow of electrical current in the circuit

Question 15

when laying out a lighting system, where should the transformer be located?

Answer 15

in the centre of the design

Question 16

how do you reduce voltage drop in a lighting install?

Answer 16

change from a 12 - 2 cable to a 10 - 2 cable

Question 17

how do you go about installing the low voltage cable for a light system?

Answer 17

Start at the transformer and work out to the last fixture. Lay cable on soil surface. Bury the cable 10 - 15cm

Question 18

some standard maintenance actions for low voltage system would be?

Answer 18

remove dust, run adjacent plant material, spray silicone lubricant in light sockets

Question 19

what stage should maintenance for a low voltage light system begin?

Answer 19

at the design phase

Question 20

T/F water is the most versatile and adaptable element you can introduce to a landscape?

Answer 20

true

Question 21

T/F water features must be constructed in full sun and receive 6 hours direct sunlight?

Answer 21

false

Question 22

T/F all features must have a large open body of water as part of design and construction?

Answer 22

false

Question 23

T/F water feature can be designed either formal or informal?

Answer 23

true

Question 24

T/F water features not need to match the scale of the property, existing landscape and buildings?

Answer 24

false

Question 25

T/F in some municipalities a permit may be required to install water features?

Answer 25

true

Question 26

T/F in some cases, small water features are ideal because they require less maintenance than large ones?

Answer 26

false

Question 27

T/F protecting property is a major reason for installing night lighting?

Answer 27

true

Question 28

T/F night scape lighting should look as natural as possible?

Answer 28

true

Question 29

T/F lighting looks best when the source is hidden?

Answer 29

true

Question 30

T/F downlighting is used to focus on a specific plant or area in the landscape?

Answer 30

false

Question 31

T/F contour lighting is a form of downlighting mainly used for safety?

Answer 31

true

Question 32

T/F shadow lighting is similar to silhouette lighting except the light source is placed behind the object?

Answer 32

false

Question 33

T/F perspective lighting is often used to make a garden space seem smaller than it is?

Answer 33

false

Question 34

T/F preformed or molded liners are manufactured from polyethylene or fibreglass?

Answer 34

true

Question 35

T/F concrete is an ideal choice for pond construction on the prairies?

Answer 35

false

Question 36

T/F a bubbling rock install is a fast and easy feature to install?

Answer 36

true

Question 37

T/F some water pumps can be left in the water without harming the pump?

Answer 37

true, newer pumps can be frozen

Question 38

how would you describe a puddled earth pond?

Answer 38

built on clay subsoil sites, good for large scale installs, requires steady water

Question 39

what pond liner can be welded into a variety of shapes?

Answer 39

butyl rubber

Question 40

a valuable characteristic of EPDM?

Answer 40

remains flexible at extremely cold temps

Question 41

when choosing a pump what should you look for?

Answer 41

a pump that can move a minimum of 2 times the volume of water/hour

Question 42

lifespan pf an LED bulb?

Answer 42

50k hours

Question 43

lifespan of a halogen bulb?

Answer 43

3k hours

Question 44

lifespan of incandescent bulb?

Answer 44

1200 hours

Question 45

incandescent bulbs converts most of the energy it produces into heat, what % is that?

Answer 45

90%

Question 46

a GFI will shut off power in the event of a short in?

Answer 46

1/40th of a second

Question 47

voltage drop formula

Answer 47

watts x length of cable / cable size constant

Question 48

how wide and deep should marginal shelves be?

Answer 48

30cm x 30cm

Question 49

hole for a preformed pond should be how much wider than the pond itself?

Answer 49

8cm

Question 50

the walls of a water feature should have an angle of?

Answer 50

30 degrees

Question 51

the ratio of height to length for a water feature is?

Answer 51

1 : 3

Question 52

how do you tune a waterfall?

Answer 52

add smoother rocks, modify angle of water or add an echo chamber

Question 53

what soil is needed for bog plants to survive?

Answer 53

1 : 1 mix of loam and organic matter

Question 54

formula for volume?

Answer 54

length x width x depth

Question 55

constant to convert to imperial gallons?

Answer 55

6.25

Question 56

constant to convert to US gallons?

Answer 56

7.5

Question 57

Y/N the cable for low voltage lighting needs to be protected in conduit?

Answer 57

no

Question 58

Y/N wire connectors must be CSA approved for outdoor use?

Answer 58

yes

Question 59

Y/N 30 - 45cm of wire should be coiled and left at each fixture and transformer?

Answer 59

yes

Question 60

Y/N do transformers need to be connected to a socket with a GFI?

Answer 60

yes

Question 61

what % of water needs to be replaced at one time?

Answer 61

10%

Question 62

what's the typical amount of evaporation from a feature?

Answer 62

3 - 5cm

Question 63

how long do water lily blooms last?

Answer 63

3 days

Question 64

why do you add native water to a pond as part of the balancing process?

Answer 64

to inoculate the pond with natural beneficial bacteria and other aquatic life

Question 65

Y/N does lighting cable need to be replaced every 3 - 5 years?

Answer 65

no

Question 66

what lighting systems are resistant to road salt damage?

Answer 66

bronze, copper and cast aluminium