CE 442
Spring 2017
Homework 10
Due Wednesday 4/26/17 by 5 PM
(In class or mailbox in Sloan 101)
1. Problem 18-1 from your textbook. Assume Q = 0.0796 m3/s and Q = 0.0214 m3/s (from
problem 16-21). Che
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- CE 442
Spring 2017
Homework 7
Due Wednesday 3/29 at the start of class
SOLmoNS
l. a) Estimate the average daily ow of domestic residential wastewater (WW) for a city of
25,000 people in units of mil
Homework 2
Due Wednesday 2/1/2017
CE 442
Spring 2017
1. Problem 3-2 from your textbook: Calculate the approximate alkalinity (in mg/L as
CaCO3) of a water containing 120 mg/L bicarbonate ion and 15 mg
CE 442
Spring 2017
Homework 8
Due Friday 4/7/17 at the start of class
1. Design a circular primary clarifier for a wastewater treatment plant with an average flow
of 8,000 m3/d and peak flow as high a
CE 442
Spring 2017
Homework 5
Due Friday February 24th, 2017
In class, at the start of class
1. 8-1 from your textbook
2. 8-3 from your textbook
3. The City of Golden, Colorado is interested in expand
CE442
Spring 2017
Drinking Water and Wastewater Overview and Regulations
Homework 1
Due Friday 1/20/2017, in class
1. List two microbial contaminants regulated by the EPAs National Primary Drinking Wa
CE 442
Spring 2017
Exam 2
April 17th, 2017 7
Name: k g 1 2%
Student ID: '
Score: . A tracer study is conducted on a chlorine contactor. The data indicate that 90% of the water
passes through in 1.0
1.
. a) Estimate the mass of oxygen per day (lag/d) required for an activated sludge treatment
4
CE 442 /\
Spring 2017
Homework 10
Due Wednesday 4/26/17 by 5 PM
(In class or mailbox in Sloan 101)
Prob
Amateur Alejandro Brito
At first glance I may seem like a shy quiet person but in reality I'm not. I like
to try new things whether it be new food or new hobbies. My favorite thing
to do is play sport
CE 215 Section 01
Balsa Wood Modulus of Elasticity
September 25th, 2016
Chris Hearing, Kaveh Chea, Alex Brito
Group 19
Purpose
Our objective for this experiment was to calculate the modulus of elastic
3-6
a) P = P + P*i*n
2 = 1 + 0.03*n
n = 1/0.03 = 33.3 years
b) 2P = P(1+ 0.03)n
2 = 1.03n
ln(2) = n*ln(1.03)
n = ln(2)/ln(1.03) = 23.45 years
3-13
Given two cash flows that are equivalent if the inter
The basic cost of production can be expressed as:
Cost = Regular Time Production Cost + Overtime Production Cost
Regular time production cost = 90 units/hr
Overtime production = 90*(0.95) = 85.5 units
The car can be driven: 28 mpg*16 gal = 448 miles
Three options exist:
1. Return it with a full gas tank. So we must pay for gas to fill it up at market rate of
$3.95/gallon.
2. Return it without filli
CE 431-Structural Steel Design
Set: 2016.02.18
Homework 6
Due: 2016.02.26
Problem 1
A W1245 column is pinned at the top and bottom and has no intermediate supports. On a single
graph, plot the followi
CE 431-Structural Steel Design
Set: 2016.03.04
Homework 8
Due: 2016.03.11
Problem 1
Compute , , and the shape factor, k, about the horizontal axis (x-axis) for the sections
shown below.
Problem 2
The
CE 431-Structural Steel Design
Set: 2016.02.04
Homework 3
Due: 2016.02.11
Problem 1
a) Determine the LRFD design tensile strength for the member and bearing-type connections
using:
a. A36 steel plates
CE 431-Structural Steel Design
Set: 2016.02.11
Homework 5
Due: 2016.02.18
Problem 1
A 1/4-in llet weld is used to connect the members shown below. Determine the LRFD design
load that can be applied to
CE 431-Structural Steel Design
Set: 2016.01.28
Homework 3
Due: 2016.02.04
Problem 1
Determine the LRFD design strength of a double angle, L7x7x3/4 in with two gage line in its long
leg and one in its
CE 431-Structural Steel Design
Set: 2016.01.20
Homework 2
Due: 2016.01.27
Problem 1
Axial forces in a column due to service loads are as follows:
Dead:
500 k compression
Live:
400 k compression
Roof l
Homework 5 Solutions - Welded Connections
Problem 1
A 1/4-in fillet weld is used to connect the members shown below. Determine the LRFD design load that
can be applied to this connection, including th
Homework 3 Solutions - Analysis of Tension Members
Problem 1
Determine the effective net area of the W16 40 shown below. Assume the holes are for 43 -in bolts.
W16 40 (AISC Table1-1 pg 1-22) : Ag = 11
Homework 6 Solutions - Compression Members
1
Problem 1
A W1245 column is pinned at the top and bottom and has no intermediate supports.
On a single graph, plot the following curves for this column:
(a
CE 442, Spring 16, HW 2
Homework 2
(Due Feb 5, 2016, Friday)
1. Find the effluent concentrations from a plug flow reactor (PFR) and a CSTR, each treating the same
pollutant and each with a detention t
Chapter 18: Accounting and Engineering Economy
18-1 Engineers and managers make better decisions when they understand the "dollar" impact of their decisions. Accounting principles guide the reporting
Chapter 17: Rationing Capital Among Competing Projects
17-1 (a) With no budget constraint, do all projects except Project #4. Cost = $115,000 (b) Ranking the 9 projects by NPW/Cost Project 1 2 3 5 6 7
Chapter 16: Economic Analysis in the Public Sector
16-1 Public decision-making involves the use of public money and resources to fund public projects. Often there are those who are advocating for part