4b431 1504 Civ Sqs Water Resources 74 2
description
Transcript of 4b431 1504 Civ Sqs Water Resources 74 2
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
Copyright © 2014 by NCEES. All rights reserved. All NCEES sample questions and solutions are copyrighted under the laws of the United States. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means without the prior written permission of NCEES. Requests for permissions should be addressed in writing to [email protected] or to NCEES Exam Publications, PO Box 1686, Clemson, SC 29633. ISBN 978-1-932613-74-2 Printed in the United States of America October 2014 First Printing
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
iii
CONTENTS
Introduction to NCEES Exams.................................................................. 1
About NCEES
Updates on exam content and procedures
Exam-day schedule
Admission to the exam site
Examinee Guide
Scoring and reporting
Staying connected
Exam Specifications .................................................................................... 3
Civil AM Practice Exam ................................................................... 11
Water Resources and Environmental PM Practice Exam ............ 33
Civil AM Solutions ........................................................................... 53
Water Resources and Environmental PM Solutions .................... 73
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
1
About NCEES The National Council of Examiners for Engineering and Surveying (NCEES) is a nonprofit organization made up of engineering and surveying licensing boards from all U.S. states and territories. Since its founding in 1920, NCEES has been committed to advancing licensure for engineers and surveyors in order to protect the health, safety, and welfare of the American public. NCEES helps its member licensing boards carry out their duties to regulate the professions of engineering and surveying. It develops best-practice models for state licensure laws and regulations and promotes uniformity among the states. It develops and administers the exams used for engineering and surveying licensure throughout the country. It also provides services to help licensed engineers and surveyors practice their professions in other U.S. states and territories. Updates on exam content and procedures Visit us at ncees.org/exams for updates on everything exam-related, including specifications, exam-day policies, scoring, and corrections to published exam preparation materials. This is also where you will register for the exam and find additional steps you should follow in your state to be approved for the exam. Exam-day schedule Be sure to arrive at the exam site on time. Late-arriving examinees will not be allowed into the exam room once the proctor has begun to read the exam script. The report time for the exam will be printed on your Exam Authorization. Normally, you will be given 1 hour between morning and afternoon sessions. Admission to the exam site To be admitted to the exam, you must bring two items: (1) your Exam Authorization and (2) a current, signed, government-issued identification. Examinee Guide The NCEES Examinee Guide is the official guide to policies and procedures for all NCEES exams. All examinees are required to read this document before starting the exam registration process. You can download it at ncees.org/exams. It is your responsibility to make sure that you have the current version. NCEES exams are administered in either a computer-based format or a pencil-and-paper format. Each method of administration has specific rules. This guide describes the rules for each exam format. Refer to the appropriate section for your exam. Scoring and reporting NCEES typically releases exam results to its member licensing boards 8–10 weeks after the exam. Depending on your state, you will be notified of your exam result online through your MyNCEES account or via postal mail from your state licensing board. Detailed information on the scoring process can be found at ncees.org/exams. Staying connected To keep up to date with NCEES announcements, events, and activities, connect with us on your preferred social media network.
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
11
CIVIL AM PRACTICE EXAM
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
CIVIL AM PRACTICE EXAM
Copyright 2014 by NCEES 13 GO ON TO THE NEXT PAGE
7. ORDER & DELIVER METAL BUILDING30 DAYS
10 DAYSSTART 10 DAYS
15 DAYS
10 DAYS 10 DAYS FINISH
5. INSTALL FINISHELEMENTS
4. ERECT BUILDING
5 DAYS
35 DAYS
6. PROCURE REINFORCING
STEEL7 DAYS
1. EXCAVATE FOOTINGS
2. FORM & POUR FOOTINGS
8. ROUGH INELECTRIC &PLUMBING
3. GRADE & POUR SLABON GRADE
9. PROCURE MISCELLANEOUS BUILDING ELEMENTS
A B C D E F
104. A CPM arrow diagram is shown below. Nine activities have been estimated with durations ranging from 5 to 35 days. The minimum time (days) required to finish the project is most nearly:
(A) 40 (B) 42 (C) 45 (D) 50
105. A bridge is to be jacked up to replace its bearings. The design requires a hydraulic ram with a
minimum capacity of 1,000 kN (kilonewtons). The hydraulic rams that are available are rated in tons (2,000 lb/ton). The minimum size (tons) ram to use is most nearly:
(A) 1,110 (B) 250 (C) 150 (D) 100
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
CIVIL AM PRACTICE EXAM
Copyright 2014 by NCEES 27 GO ON TO THE NEXT PAGE
131. The Standard Penetration Test (SPT) is widely used as a simple and economic means of obtaining which of the following?
(A) A measurement of soil compressibility expressed in terms of a compression index
(B) A direct measurement of the undrained shear strength
(C) An indirect indication of the relative density of cohesionless soils
(D) A direct measurement of the angle of internal friction 132. A department of transportation must remove and replace a 12-ft 20-ft concrete slab on an
interstate facility. To minimize disruption to traffic, the work must be completed during an 8-hour nighttime work shift. Nighttime temperatures average 50F. If the minimum required compressive strength is 3,500 psi, the concrete mix would most likely consist of:
(A) coarse aggregate, sand, Type II cement, chemical accelerator
(B) sand, Type III cement, water, chemical accelerator
(C) coarse aggregate, sand, Type V cement, water, chemical accelerator
(D) coarse aggregate, sand, Type III cement, water, chemical accelerator 133. Fatigue in steel can be the result of:
(A) a reduction in strength due to cyclical loads
(B) deformation under impact loads
(C) deflection due to overload
(D) expansion due to corrosion
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
33
WATER RESOURCES AND ENVIRONMENTAL PM PRACTICE EXAM
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
WATER RESOURCES AND ENVIRONMENTAL PM PRACTICE EXAM
Copyright 2014 by NCEES 34 GO ON TO THE NEXT PAGE
501. An industry is proposing to discharge its effluent into a nearby stream. Average design flow rates and the BOD5 of its wastewater and the stream are as follows:
Parameter Wastewater Stream Flow rate BOD5
10 MGD 100 mg/L
100 cfs 2 mg/L
The in-stream BOD5 standard for the area is 5 mg/L. The effluent BOD5 removal required to meet this standard is most nearly: (A) 95% (B) 76% (C) 67% (D) 54%
502. Three upflow clarifiers each have a diameter of 30 ft. If the total average flow for the combined
clarifiers is 2 MGD, the overflow rate (gpd/ft2) for each clarifier is most nearly:
(A) 250 (B) 950 (C) 2,850 (D) 8,500
503. A 60-ft-diameter aerobic digester with an 8-ft side wall depth treats 20,000 gpd of thickened
secondary sludge that has a 2% solids concentration and is 75% volatile matter. The volatile solids loading rate lb/(ft3-day) is most nearly: (A) 0.148 (B) 0.111 (C) 0.028 (D) 0.013
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
WATER RESOURCES AND ENVIRONMENTAL PM PRACTICE EXAM
Copyright 2014 by NCEES 42 GO ON TO THE NEXT PAGE
518. A stormwater collection system drains the areas shown into a lake. Using the rational method for determining peak flow, the time of concentration Tc (min) that should be used to determine the peak discharge at the point where the pipe discharges into the lake is most nearly:
(A) 13 (B) 16 (C) 21 (D) 43
519. A basic assumption of the rational method for determining peak runoff from a watershed is that peak
runoff for a given rainfall intensity:
(A) occurs if rainfall duration is equal to or greater than the time of concentration
(B) is independent of the rainfall intensity
(C) occurs only if peak discharge per unit area increases as the drainage area increases
(D) occurs if rainfall duration is less than the time of concentration
Drainage Zone A B C D Area, acres Tc for overland flow in this zone, min Velocity in pipe, fps
10 10
12 12 3.2
11 12 3.6
9 7 3.9
A B
1 2 3 4
C D
LAKE
400 ft 400 ft 400 ft
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
63
CIVIL AM SOLUTIONS
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
CIVIL AM SOLUTIONS
66
7 4 5+ +Activities:
30 + 10 + 10 = 50 daysDays:
30 ft
50 ft40 ft
x
104. Reference: Nunnally, Construction Methods and Management, 8th ed., 2011, pp. 282285.
THE CORRECT ANSWER IS: (D)
105. Reference: Ricketts, Loftin, and Merritt, Standard Handbook for Civil Engineers, 5th ed.,
p. 4.11.
1 ton1,000 kN 1,000 kN 112.4 tons
8.896444 kN
150 tons > 112.4 tons THE CORRECT ANSWER IS: (C)
106. Reference: Shapiro, Shapiro, and Shapiro, Cranes and Derricks, 3rd ed., 2000, p. 244.
40tan x 53.13
30cos 51.13 100 ft 60 ft
60 ft 35 ft 25 ft
x
THE CORRECT ANSWER IS: (B)
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
CIVIL AM SOLUTIONS
72
12 in. 2%
2 Q1 = Q2
Q2
12 in. 2%
? in. 2%Q1
Q1
121.
Reference: Viessman and Lewis, Introduction to Hydrology, 4th ed., 1996, p. 252.
1 1 2 2
2/3 1/ 2 2/3 1/21 1 2 2
2/3 2/31 2
1 21 2
222
1
1
2/3 22
2 V A V A
1.49 1.492 A R S A R S
n n
A A2 A A
P P
1DA 0.785 ft
4 4P D 1 3.14 ft
DD0.785
2 0.7853.14 4
2/322
2
2/322 2
2/322 2
2/38/3
2
8/32
3/8
2
2
4D
D D0.623
4 4
D D
4 4
1 1D
4 4
0.623 0.311 D
0.623D
0.311
12 in.D 1.297 ft 15.6 in. 16 in.
ft
THE CORRECT ANSWER IS: (A)
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
CIVIL AM SOLUTIONS
79
135. Reference: Garber and Hoel, Traffic & Highway Engineering, 4th ed., p. 901.
s w
s w a
s
w
s
w
a
33
W WWTotal density
V V V V
where total density
W total weight
V total volume
W weight soil
W weight of water
V volume of soil
V volume of water
V volume of air
9.11 lb 4.41 lb156.67 lb/ft (pcf )
0.03 ft
Dry unit weig
d
d
ht of soil1 w
where w moisture content
156.67 pcf140.51 pcf
1 0.115
THE CORRECT ANSWER IS: (B)
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
73
WATER RESOURCES AND ENVIRONMENTAL PM SOLUTIONS
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
WATER RESOURCES AND ENVIRONMENTAL PM SOLUTIONS
75
501. Reference: Davis and Cornwell, Introduction to Environmental Engineering, 4th ed., 2008, p. 376. Convert wastewater flow rate to cfs:
6 310 10 gal day hr ft15.47 cfs
day 24 hr 3,600 sec 7.48 gal
Let x = BOD5 of the effluent after the BOD5 removal process. Then, from a mass balance at the mixing point:
5
(15.47) (100)(2) (115.47)(5)
24.39 mg/L
100 24.39BOD removal efficiency required (100) 75.6%
100
x
x
THE CORRECT ANSWER IS: (B)
502. Reference: Metcalf and Eddy, Wastewater Engineering: Treatment and Reuse, 4th ed., 2003,
p. 409.
2
2
2 MGDFlow per clarifier 0.667 MGD
3 clarifiers
667,000 gpd 667,000Overflow rate 944 gpd/ft
706.930
4
THE CORRECT ANSWER IS: (B)
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
WATER RESOURCES AND ENVIRONMENTAL PM SOLUTIONS
76
503. Reference: Metcalf and Eddy, Wastewater Engineering: Treatment and Reuse, 4th ed., 2003, pp. 1,533–1,546.
2 2
3
Digester volume D H 0.785 (60 ft) (8 ft)4
22,608 ft
Daily sludge volume 20,000 gal/day 0.02 MGD
Sludge solids concentration 2% 20,000 mg/L
Daily VSS mass 8.34 QC
lb/Mgal8.34 (0.02 MGD)(0.75)(20,000 mg/L)
mg/L
2,502 lb/day
3
3
VSS
daily VSS mass 2,502 lb/dayVSS loading
digester volume 22,608 ft
0.111 lb/(ft -day)
THE CORRECT ANSWER IS: (B)
504. Reference: Mott, Applied Fluid Mechanics, 6th ed., 2005, p. 464.
5/2
5/2
3
Q 2.48 H
13 in.(2.48)
12 in./ft
3.03 ft /sec
THE CORRECT ANSWER IS: (C)
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].
PE Practice Exams Published by NCEES
Chemical
Civil: Construction
Civil: Geotechnical
Civil: Structural
Civil: Transportation
Electrical and Computer: Electrical and Electronics
Electrical and Computer: Computer Engineering
Electrical and Computer: Power
Environmental
Mechanical: HVAC and Refrigeration
Mechanical: Mechanical Systems and Materials
Mechanical: Thermal and Fluids Systems
Structural
For more information about these and other NCEES publications and services,
visit NCEES.org or call Client Services at (800) 250-3196.
This is a preview. Some pages have been omitted. Copyrighted by NCEES. For permission to reuse, email [email protected].