Hydraulics

  1. When converting liquid to steam how many times does it expand
    1700 times
  2. Specific heat of water
    One BTU to raise temperature of 1 pound of water 1°F
  3. One cubic inch of Mercury weighs
    0.491
  4. Mercury is how many times heavier than water
    13.61
  5. What is the best pressure for a sprinkler head
    20 PSI
  6. What is the best role of them for GPM for a sprinkler head
    25 GPM
  7. Sprinkler heads should cover how many square feet
    80 to 100
  8. How do you determine discharge in GPM for my sprinkler head
    Gpm= 1/2 pressure + 15
  9. Do not pump over what psi at stand pipe connection unless it states otherwise
    200 psi
  10. Water weighs how much psi per ft head
    .434
  11. It takes how many foot head of water to exert a pressure of one PSI
    2.31
  12. Atmospheric pressure is what at sea level
    14.7
  13. 1 gallon of water weighs
    8.33 pounds
  14. 1 gallon of water contains how many cubic inches
    231
  15. One square foot equals how many square inches of water
    144 square inches
  16. One cubic foot equals how many cubic inches of water
    1728 cubic inches
  17. How many gallons of water are in one cubic foot
    7.5
  18. How much does one cubic foot of water weigh
    62.4 pounds
  19. What does it take to compress water 1%
    30,000 PSI
  20. Water will absorb heat how many times more than any other cooling agent
    10 times
  21. What is friction loss per story
    5 psi
  22. What role is used to store 1 1/2 to 2 1/2 inch firehose
    Straight roll
  23. What is a donut roll used for
    Filler hose 5 inch was stored in compartments and crash back
  24. What do you wash mask with
    Warm soap solution rinse with water
  25. What do you disinfect mask with
    70% solution of Ethel methyl isopropyl alcoholOr some merge in a solution of 2 tablespoons of chlorine bleach to 1 gallon of water
  26. SCba alarms when air is how low
    20 to 25%
  27. Friction loss formula
    Coefficient (GPM/100)squared x length of hose in 100ft sections
  28. 1 1/2 coefficient
    24
  29. 1 3/4 coefficient
    15.5
  30. 2/12 coefficient
    2
  31. 5 coefficient
    .08
  32. Volume of firehose
    • Make sure everythings in inches
    • Pi R squared H divided by 231
  33. Foam eductor friction loss
    75psi
  34. Sprinkler head gpm
    1/2 pressure + 15
  35. Rule of thumb for sprinkler head
    25 gpm per sprinkler head
  36. What is considered good sprinkler head pressure
    20 psi
  37. 1 2 1/2 hose line will supply how many sprinkler heads
    10
  38. What is the perfect vacuum for a draft
    33.957 feet
  39. What is the preferred hose length and nozzle GPM for a foam educator
    150ft 60 gpm
  40. What is a disadvantage of around the pump foam applicator
    If the intake pressure is greater than 10 psi the foam cannot enter the system
  41. How big is the tank to pump valve
    3 in
  42. How big is the tank fill valve
    1 1/2 in
  43. How big is recirculating line
    3/8 in
  44. How big is the engine cooler line
    1/2 in
  45. Volume of water in a rectangular box
    L x w x h x 7.5
  46. How many gallons of water it will take to fill a room with steam
    L x w x h x 7.5 \ 1700
  47. How many pounds of water it will take to fill room with steam
    L x w x h x 7.5 / 1700 x 8.33
  48. How many cubic feet of water it will take to fill a room with steam
    • Make sure everything is in ft or inches
    • L x w x h x 7.5 \ 1700 \ 7.5
  49. What is the GPM for a 1 1/4 straight tip flowing 50 pounds
    328
  50. What is the GPM discharge for a 1 inch straight tip flowing 50 pounds
    210
  51. What is the GPM discharge for a 2 1/2 inch fog nozzle
    300
  52. What is the GPM discharge for a 1 3/4 fog nozzle
    180
  53. Add how many Psi for every 250 GPM flowing through device
    5 psi
  54. Rising 1 pound of water from 32° to 212° requires how many btu
    180 btu
  55. When folding a salvage cover the side in contact with the floor is called what
    The clean side
  56. I’m folding a salvage cover the side facing up is called what
    Dirty side
  57. What type of salvage roll do we do
    One fire fighter salvage roll (modified)
Author
jr_schreiber
ID
351519
Card Set
Hydraulics
Description
Updated