R
Instructor’s Manual and Testbank
U
To accompany
E S
Basic Environmental Technology:
S
Water Supply, Waste Management and Pollution Control
I
O
6th Edition
N
N
Jerry A. Nathanson, PE
Richard A. Schneider
O
C
E D
M
Upper Saddle River, New Jersey
Columbus, Ohio
, Table of Contents
Chapter 1 1
Chapter 2 2
Chapter 3 5
Chapter 4 8
Chapter 5 10
R
Chapter 6 12
Chapter 7 14
U
Chapter 8 18
Chapter 9 20
E
Chapter 10 23
Chapter 11 26
S
Chapter 12 29
Chapter 13 29
S
Chapter 14 32
I
Supplemental Problems 35
O
Multiple Choice and True/False 36
N
Answers to Multiple Choice and True/False 50
N
Supplemental Problems 52
O
C
E D
M
This manual provides instructors with (a) text page references where answers to the end-of-chapter
Review Questions can be found and worked-out solutions to each of the Practice Problems.
Additional materials including supplemental problems and projects.
Generally, answers to end-of-chapter Practice Problems are rounded-off to reflect the precision of
R
the data and/or the accuracy of the assumed factors in the problems. These answers are also listed
in Appendix G of the text for students to use in checking their work. (The authors have made every
U
attempt to keep errors to a minimum. They can be notified of any mistakes that may be found in the
text or in this manual at: nathanson@ucc.edu or raschneider3@madisoncollege.edu)
E S
CHAPTER 1 - BASIC CONCEPTS
S
Review Question Page References
(1) 1 (17) 15
I
(2) 2, 3 (18) 15
O
(3) 6 (19) 16
(4) 6 (20) 16, 17
N
(5) 6 (21) 17
(6) 7 (22) 17
N
(7) 8 (23) 18
(8) 9 (24) 19
(9) 9, 10 (25) 19
O
(10) 9, 10 (26) 20
(11) 10 (27) 20
C
(12) 10 (28) 20
(13) 11 (29) 13
D
(14) 12 (30) 14
(15) 12, 13 (31) 20, 21
E
(16) 12
M
(There are no Practice Problems for Chapter 1)
, 2
CHAPTER 2 - HYDRAULICS
Review Question Page References
(1) 24 (8) 30 (15) 42
(2) 24 (9) 31 (16) 44
(3) 25 (10) 32 (17) 44
(4) 25 (11) 33 (18) 44
(5) 27 (12) 35 (19) 45
R
(6) 28 (13) 36 (20) 45
(7) 30 (14) 40-42 (21) 46
U
(22) www.iihr.uiowa.edu/research
E
Solutions to Practice Problems
S
1. P = 0.43 x h (Equation 2-2b)
P = 0.43 x 50 ft = 22 psi at the bottom of the reservoir
S
P = 0.43 x (50 -30) = 0.43 x 20 ft = 8.6 psi above the bottom
I
2. h = 0.1 x P = 0.1 x 50 = 5 m (Equation 2-3a)
O
3. Depth of water above the valve: h = (78 m -50 m) + 2 m = 30 m
N
P = 9.8 x h = 9.8 x 30 = 294 kPa ≈ 290 kPa (Equation 2-2a)
N
4. h = 2.3 x P = 2.3 x 50 = 115 ft, in the water main
h = 115 - 40 = 75 ft
P = 0.43 x 75 = 32 psi, 40 ft above the main (Equation 2-2b)
O
5. Gage pressure P = 30 + 9.8 x 1 = 39.8 kPa ≈ 40 kPa
C
Pressure head (in tube) = 0.1 x 40 kPa = 4 m
D
6. Q= A x V (Eq. 2-4), therefore V = Q/A
A = πD2/4 = π (0.3)2/4 = 0.0707 m2
E
100L/s x 1 m3/1000L=0.1 m3/s
V = 0.1 m3/s 0.707m2 = 1.4 m/s
M
7. Q = (500 gal/min) x (1 min/60 sec) x (1 ft3/7.5 gal) = 1.11 cfs
A = Q/V (from Eq. 2-4)
A = 1.11 ft3/sec /1.4 ft/sec = 0.794 ft2
A = πD2/4, therefore D = √4A/π = √(4)(0.794)/π = 1 ft = 12 in.
8. Q=A1 x V1 = A2 x V2 (Eq.2-5)
Since A = πD2/4, we can write
D12 xV1 = D22 xV2 and V2 =V1 x (D12 /D22)
In the constriction, V2 = (2 m/s) x (4) = 8 m/s
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MedConnoisseur. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $19.99. You're not tied to anything after your purchase.
