What is the length, in feet,
of a pool 40 yards long?
What is the length, in feet,
of a pool 50 yards long?
What is the length, in feet,
of a pool 40 meters long?
What is the length, in feet,
of a pool 50 meters long?
What is the surface area of
a rectangular pool with a length of 20 yards and a width of 30 feet?
What is the surface area of
a rectangular pool with a length of 10 meters and a width of 20 feet?
What is the surface area a
circular spa with a 12 foot diameter?
What is the surface area a
circular spa with a 9 foot diameter?
What is the volume of a rectangular
pool with a length of 40 feet, a width of 20 feet, and a constant depth
of 5 feet?
What is the volume of a rectangular
pool with a length of 32 feet, a width of 16 feet, and a depth ranging
from 3 feet in the shallow end to 6 feet in the deep end?
What is the volume of a rectangular
pool with a length of 25 yards and a width of 45 feet? The pool has
a swimming area that is 10 yards long that has a depth ranging from
3 feet to 5 feet, with a constant slope. The diving area has a length
of 15 yards and a constant depth of 12 feet.
What is the volume of a rectangular
pool with a length of 45 yards and a width of 65 feet? The pool has
a swimming area that is 25 yards long that has a depth ranging from
4 feet to 6 feet, with a constant slope. The diving area has a length
of 20 yards and a constant depth of 15 feet.
A pool 40 feet long and 20
feet wide lost 3 inches of water over the weekend. How many gallons
of water must be replaced?
A pool 25 yards long and 25
meters feet wide uses two inches of water every backwash. How many gallons
of water must be replaced?
A pool has a maximum bather
load of 180 bathers. What should the storage capacity (in gallons) of
the surge tank be?
A pool has a maximum bather
load of 220 bathers. What should the storage capacity (in gallons) of
the surge tank be?
What is the turnover rate of
a 80,000 gallon pool with a flow rate of 167 gpm?
What is the turnover rate of
a 150,000 gallon pool with a flow rate of 417 gpm?
What is the flow rate of a
50,000 gallon pool based on an 8 hour turnover rate?
What is the flow rate of a
120,000 gallon pool based on an 6 hour turnover rate?
What is the filter surface
area needed for a high-rate sand filter that has a filtering rate of
15 gpm/sqft, if the flow rate is 313 gpm?
What is the filter surface
area needed for a DE filter that has a filtering rate of 2.5 gpm/sqft,
if the flow rate is 80 gpm?
What is the filter surface
area needed for cartridge filter that has a filtering rate of .375 gpm/sqft,
if the flow rate is 120 gpm?
How many BTU's are needed to
raise the water temperature of 700 gallon spa from 82°to 104°?
How many BTU's are needed to
raise the water temperature of 50,000 gallon pool from 60° to 84°?
If a 950 gallon spa has an
average of 23 bathers per day, how many days before the water should
be replaced?
If a 1350 gallon spa has an
average of 63 bathers per day, how many days before the water should
be replaced?
Calculate the Saturation Index
for water that has a pH of 7.6, a temp- erature of 104°F, a calcium
hardness of 400 ppm, a total alkalinity of 150 ppm and total dissolved
solids of 800 ppm. Corrosive or Scale forming?
Calculate the Saturation Index for water that has
a pH of 7.0, a calcium hardness of 100 ppm, total alkalinity of 50 ppm,
a temperature of 84°F, and total dissolved solids of 1400ppm. Corrosive
or Scale forming?
Calculate the Saturation Index for water that has
a temperature of 66°F, and total dissolved solids of 200 ppm, a total
alkalinity of 25 ppm, a pH of 7.0, and a calcium hardness of 50 ppm.
Corrosive or Scale forming?
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