1. Centrifugal pumps are used to deliver water from a river
reservoir is 100 m above the river. The total length of th
D= 0.50 m and friction factorf= 0.020. All pumps are
idcharacteristics defined by Hp= 150 200 Q2. Neglect m(a) Calculate
the flow rate that one pump can deliver.(b) Sketch the system
characteristic curves for two pumps in(c) If a flow rate of 1 m3/s
is desired, how many pumps will
arrange them?
2.
Water enters a reach of a rectangular channel with a widthis
desired that a hydraulic jump occur upstream (location 2conditions
exist (location 3). Other than across the jump, lofollowing
(a) Depths at locations 2 and 3,(b) Required height of the sill,
h,
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3. A sewer pipe of circular cross-section is made of concrete
(uniform flow condition such that the pipe flows half full, ththe
pipe. Given the pipe slope S0= 0.01, and Q= 1.0 m3/s, f
(a) the required pipe diameter d,(b) the Froude number of the
flow(c) If a hydraulic jump will occur, write the necessary
equation
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CivE 331 Final Exam
4. (a) A sanitary sewer with a flow of 0.3 m3/s enters
Manholeline. The distance downstream to Manhole 2 is 120 m. Tat
manhole 1 is 100 m; at manhole 2 it is 100.2 m. Followsewer design,
find the required pipe size and pipe slope elevations of the pipe.
(n= 0.013.)
(b) Find the flow rates in the three storm sewer pipes from Mand
the IDF relationship for the area is i= 1800/(tR+ 20) 120 m, and
the flow velocity in each pipe is assumed to bcomposed of 1.0
hectare of lawn (C = 0.3) and 0.3 hectare(C = 0.9).
