UCLA
CEE 151 Water Resources Engineering
Winter 2017
Problem Set 1
4 a) You have been asked to design a galvanized iron drainage line for the reservoir
shown below. The line discharges to the atmosphere through a fully open butterfly valve
(K=0.3). The st
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2017
Problem Set 2
1. Design a thrust block for a pipeline with a 90 degree elbow, given the following:
v = 5 ft/sec, D = 12 inches, P = 70 psi. Soil type: sand and gravel. Use a safety
fact
PS 2 Solutions
1. Because we have a 90 degree bend, I calculated Fx = Fy = 7954.86 lbf, and a
result force of about 11250 lbf. Thus
where depth to the pipe centerline is 4.5 feet, and we take the average soil
bearing pressure from table 52-6 for sand and
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2017
Problem Set 3
1. Solve the following network using EPANET. Check your solution with the one in the book
(page 521) which was solved using the Hardy Cross method.
2. Two reservoirs are c
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2013
Problem Set 6
2. Perform a preliminary conceptual design for sizing the pump in the Kilburn Pressure
Zone. At this time, assume it will be located near fixed grade node 21. Consider an
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2013
Problem Set 7
1. You have been asked to check a design for a street gutter and curb inlet in an area of the city
that has been zoned as light industrial. The industrial blocks are 300 x
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2013
Problem Set 3
2. A steel pipeline 6.0 inches in diameter with a wall thickness of 0.25 inches, extends 3,280 ft
between two reservoirs shown below.
A.) What is the static pressure at th
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2013
Problem Set 5
1. For PS 4, you solved the following problem, and should have determined normal depth to
be 2.61 feet.
Now, determine the Froude number. Is the flow sub-critical or super
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2013
Problem Set 2
1. Design a thrust block for a pipeline with a 90 degree elbow, given the following:
v = 5 ft/sec, D = 8 inches, P = 70 psi. Soil type: sand and gravel. Use a safety
facto
CEE 151 Problem Set 4 Solutions
1. We first need to compute the steady state velocity. Applying Bernoullis, we have
.
1
2
AR 2/3S1/2
o where A = 2(1.5) = 3 m , P = 2 + 2(1.5) = 5 m,
n
and R = A/P = 3/5 =0.6m
1
Hence, Q
(3)(0.6) 2/3 (0.0005)1 / 2 = 3.181
CEE 151 PS 1 Solutions Winter 2017
4.1.1. Consider the datum as the horizontal line through point 2. Since the pipe has a
constant diameter, the piezometric head difference determines the direction of
flow of the water in the pipe.
p1
p
15(144)
20(144)
h
Thrust Bluclis shuuld In: placed un the ﬁlling
in this dirrtliun Hf“ alL‘r ﬂu“.
IJU nut L‘m'usu: IhL‘ L‘nIiI’L‘ filing in cuncruiu. Datum
hL. DC apor no u es co apse
in high-pressure region
mpeller blade
Distorted
flow lines L " EGL 5%
2 : “HRH. ﬁ‘h“~ J
Control Section
HW - Headwater
TW — Tailwater
W.S. - Water Surface
dc — Critical Depth
Figure I-13-Typical Inlet Control Flow Section
A special type of free surface ﬂow is called "just-full ﬂow." This is a special condition where a
pipe flows full with
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2016
Problem Set 7
1. A 7 ft X 5 ft culvert with a squared edged entrance is to be designed for a road crossing. Consider a 0o
wingwall flare box culvert. The design discharge is 200 cfs, an
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2016
Problem Set 3
1. Two reservoirs are connected with a 30 inch diameter steel pipeline (f=0.02) and a length of
19,680 ft. Compute the flow rate in the pipeline and the pressure at the mi
CEE 151 Design Project W 2016
Problem Statement:
You are asked to design a municipal water distribution system with two sources of supply. System components will
include elevated storage, pump(s) and a pipe network.
Network: After careful analysis of the
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2016
Problem Set 4
1. A simple surge tank of 4 ft diameter is placed near the terminus of a 4000 ft long 12 inch steel
pipeline, where the pressure is 15 psig. What is the conservative maxim
UCLA
CEE 151 Water Resources Engineering
Winter 2016
Problem Set 1
4 a) You have been asked to design a galvanized iron drainage line for the reservoir
shown below. The line discharges to the atmosphere through a fully open butterfly valve
(K=0.3). The st
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2013
Problem Set 4
1. A simple surge tank of 4 ft diameter is placed near the terminus of a 4000 ft long 12 inch steel
pipeline, where the pressure is 15 psig. What is the conservative maxim
UCLA
CEE 151 Water Resources Engineering
Winter 2013
Problem Set 1
3. Develop the following expression for headloss in a pipe for steady laminar flow.
5 a) You have been asked to design a steel drainage line for the reservoir shown below.
The line dischar
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2012
Problem Set 4
1. A simple surge tank of 4 ft diameter is placed near the terminus of a 4000 ft long 12 in steel
pipeline, where the pressure is 15 psig. What is the conservative maximum
PS 3 Solutions W 2012
12.2.11
Using the following equation solve for Zs
So
, and
with safety factor (my preferred answer)
= - 2.29 m (suction lift) without the safety factor.
2 A.) Static pressure at closed valve is
From Bernoullis,
so
where
B.) From unst
PS Solutions W2012
1. From PS 4 we found that normal depth was yn=2.61 feet. The flow area is
ft2.
Top Width is
ft.
Hydraulic Depth is
ft.
ft/sec
(less than 1 therefore flow is sub-critical)
Solve for critical depth utilizing Newtons method, or MATLAB to
UCLA
CEE 151: Introduction to Water Resources Engineering
Winter 2017
Problem Set 4
1. A simple surge tank of 4 ft diameter is placed near the terminus of a 4000 ft long 12 inch steel
pipeline, where the pressure is 15 psig. What is the conservative maxim
Problem # 1
For the simple pipe system shown in the figure, the pressure are p1=14 kPa, p2=12.5 kPa, and p3=10kPa. Determine the head loss between 1 and 2 and the head loss between 1 and 3. The discharge is 7 l/s. The energy equation between 1 and 2