As a City Engineer you are overseeing the order for a new fire truck. You need t

Question

As a City Engineer you are overseeing the order for a new fire truck. You need to make sure that the pumping unit on the fire truck can provide enough pressure to extinguish an external fire in the city's tallest building. a) What is the minimum pressure in the large water tank in the fire truck to reach the fire in the building that is 50 ft tall? Neglect the pressure losses in the hose. What is the velocity of the water as it exits the hose? The diameter of the hose is 3 in. What is the flow rate in gallons per minute?

Explanation / Answer

a)

50ft = 15.24 m

from burnoulis equation

P ( in tank ) = 1000x g x15.24 + Patm

P (tank) = 249352 Pa

b)

from burnouli equation

Ptank = Patm + 0.5 x1000x V^2

V = 17.28 m/s

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.