6.8

Question 1

can provide clean, safe, and reliable water
through
properly
maintained catchment.

Answer 1

Rainwater

Question 2

it is one of the purest sources of water
available, nearly always exceeding the
quality of ground or surface water.

Answer 2

Rainwater

Question 3

*intercepts and collects storm water runoff
and detain or retain it for later use.
*used for _______ and other daily activities
that needs water.

Answer 3

Rainwater Collection/Harvesting, livestock

Question 4

are made of a catchment area, conveyance
devices (e.g., gutters, conductors, and
downspouts), filters, storage tanks, and
distribution systems.

Answer 4

Rainwater Harvesting Systems

Question 5

• wherein rainwater is collected usually
  rooftop, patio, terrace or driveways.
• they are made of a variety of materials
  including _____, _______, __________,
  and _____.

Answer 5

Roof Catchment Area, wood, ceramic, cementitious, metal.

Question 6

are more likely than other materials to
support the growth of mold, algae,
bacteria, and moss, which can contaminate
water supplies.

Answer 6

Wood shakes, wood shingles, and
asphalt composition shingles

Question 7

are relatively smooth and are therefore
less susceptible to contamination.

Answer 7

Metal roofs

Question 8

is an exceptionally inert metal that works
well, but it is expensive.

Answer 8

Stainless steel

Question 9

is also relatively inert, but the health
effects of ingesting small amounts of
aluminum are somewhat controversial in
connection to Alzheimer’s Disease.

Answer 9

Aluminum

Question 10

are storage systems make use of _______ containers (e.g., barrel or fiberglass
tank).

Answer 10

Cisterns, above
ground

Question 11

are the single largest investment for most
rainwater harvesting systems and are
mostly _______.

Answer 11

Cisterns, cylindrical

Question 12

in cold climates, the cistern
must be protected from
freezing
by
________ or incorporating
it into a basement.

Answer 12

burying
it
underground

Question 13

cistern can be made of galvanized
steel, concrete, fiberglass, or wood, plastic
(polyethylene). T or F

Answer 13

T

Question 14

Is a horizontal ______ or channel
that runs along the ______ of a
building roof to capture and divert
rainwater.

Answer 14

Gutter, trough, eaves

Question 15

which is a _______ that
carries the water collected by
gutter pipes ______ from the roof
gutter

Answer 15

Downspout, vertical pipe, away

Question 16

is a horizontal pipe that carries water.

Answer 16

Conductor

Question 17

custom made in one piece without seams
and are preferred to use for it only have
few joints.

Answer 17

Seamless Gutter

Question 18

*Rainwater captured in a sanitized system is good
for drinking. T or F

Answer 18

T

Question 19

__________ on the catchment area surface
can include pollen, dust, mold, bacteria, algae,
animal droppings, dead insects, smoky
condensate residues from heaters, atmospheric
pollutants, and chemicals from painted or
waterproofed surfaces.

Answer 19

Contaminants

Question 20

prevents the initial flow of rainwater with
pollen, mold spores, and other contaminants
from draining into the _________, thereby
preventing large concentrations of surface
contamination from being collected in the
storage tank.

Answer 20

First-flush Washing, storage tank

Question 21

First-flush Washing is needed for water used solely for irrigation
purposes. T or F

Answer 21

F (not needed)

Question 22

Dirty storage containers may
become a _________ or a
_______ ground for
mosquitoes and other pests

Answer 22

health hazard, breeding

Question 23

The design of the system should take into
account the intended use (potable or non
potable) of the system, water consumption
rates, local rainfall data and weather patterns, and the size and type catchment area and cistern. T or F

Answer 23

T

Question 24

The design of a ________ system
must take into account how much water is
needed and when.

Answer 24

rainwater harvesting

Question 25

Consumption rates for irrigation systems vary
significantly based on ___ and ____ of
vegetation.

Answer 25

type, maturity, vegetation

Question 26

In semiarid climates, _______ requires
irrigation rates ranging from 5 in/ft2 (26 gal/ft2), for _______ to 24 in/ft2 (125 gal/ft2), for ______ over the growing season.

Answer 26

turf grass, Buffalo grass, Kentucky bluegrass

Question 27

*With prudent use, low-flow, water-conserving plumbing fixtures and little outdoor water use, residential consumption can be reduced to a range from ______ to ___ gal (160 to 280 L) per person per day.

Answer 27

40, 70

Question 28

The amount of ______ in a particular period is
very unpredictable, especially in ____ and
________ where annual precipitation is
less than 20 in (500 mm).

Answer 28

rainfall, arid, semiarid climates

Question 29

is the precipitation rate at which rain falls over a short
duration of time (usually based on 15 min of
precipitation) in in/hr and mm/hr.

Answer 29

Rainfall Intensity

Question 30

The _________ is computed using the
footprint of the building plus the length of the ______. One inch of rain typically produces about ________ of catchment area.

Answer 30

catchment area (A), overhangs, 0.60 gal/ft2

Question 31

The efficiency of rainfall collected is usually assumed to be between
_____ (rough concrete) and ____ (metal),
depending on system design and capacity.

Answer 31

75%, 90%

Question 32

Formula of Rainwater Collected

Answer 32

R  (0.60 x A x r x η)