Twst

Question 1

1 gallon of water weights?

Answer 1

8.3 lbs

Question 2

1 gallon of liquid chlorine weights?

Answer 2

10 lbs

Question 3

1 cubic foot of water is how many gallons

Answer 3

7.5 gallons

Question 4

1 horsepower = how many watts

Answer 4

746

Question 5

2 ounces of muriatic acid lowers TA in 1000 gallons how much

Answer 5

10ppm

Question 6

How much does .083lbs of CYA raise per 1000 gallons

Answer 6

10ppm

Question 7

How much sodium bicarbonate per 1000 gallons for 10ppm

Answer 7

.15lbs

Question 8

16 ounces = ____ pint

Answer 8

1 pint

Question 9

Ounces to pounds

Answer 9

16 ounces = 1 lbs

Question 10

Area formula

Answer 10

A=pi r^2

Question 11

Volume of a rectangle pool

Answer 11

Length x width x avg depth x 7.5

Question 12

Volume of circular pool

Answer 12

Radius x radius x 3.14 x avg depth x 7.5

Question 13

Required flow rate

Answer 13

Pool volume / (turnover time x 60)

Question 14

Required filter area

Answer 14

Flow rate/ gpm per sq ft

Question 15

Turnover time

Answer 15

Gallons /
(flow rate x 60)

Question 16

Water loss =

Answer 16

Length x width x (loss in inches / 12) x # of days x 7.5

Question 17

Maximum bather load (pool) =

Answer 17

Surface area in sq ft /
20

Question 18

Maximum bather load (spa) =

Answer 18

Surface area in sq ft /
10

Question 19

Total chlorine =

Answer 19

Combined chlorine + free chlorine

Question 20

Chlorine residual in ppm =

Answer 20

(Pounds of product) x (% of strength) x (1,000,000) / volume x 8.3

Question 21

Power (watts) =

Answer 21

Volts x amps

Question 22

Required CYA =

Answer 22

Ppm desired x .083 x volume / 10,000

Question 23

Total dynamic head =

Answer 23

A. Measure vacuumed pressure at pump and multiply by 1.13
B. Measure clean filter pressure x 2.31
C.add A and B to get to all friction loss in feet of head