hydrant connections & line pressure

Question 0

When second to arrive on the first alarm, can the 10 foot hard suction be used?

Answer 0

Yes. When other then first to arrive on the first alarm, the 10 foot small hydrant connection, 35 foot soft hydrant connection or the 10 foot hard suction shall be used

Question 1

When first to arrive on the first alarm, can the 10 foot hard suction be used?

Answer 1

No. When first to arrive on the first alarm, the 10 foot small hydrant connection with a 35 foot soft charger connection maybe used.

Question 2

When arriving at second or greater alarms can the 10 foot hard suction be used?

Answer 2

Yes. When arriving at second or greater alarms the 10 foot hard suction connection should be used if available

Question 3

What connection do you use when drafting operations are indicated?

Answer 3

When drafting operations are indicated, the 10 foot hard suction connection must be used

Question 4

When hydrants are unlawfully blocked at fires or emergency operations, a length of____, where practical, may be used to connect a pumper to a hydrant if the _____hydrant connection will not reach

Answer 4

3 1/2 inch hose, 35 foot soft hydrant connection

When in-line pumping operations are implemented, 3 1/2 inch hose shall be the initial supply line

Question 5

One and three-quarter inch hose with a 15/16 inch nozzle equals ___psi at nozzle plus ___ PSi per length friction loss

Answer 5

50, 20

Question 6

2 1/2 inch hose with 1 1/8 inch nozzle equals ___psi at nozzle plus ___PSI per length friction loss

Answer 6

40, 5

Five psi for each floor above grade must also be calculated for both