13.2
A static pile load test was carried on a 0.8 m diameter pile installed 21 m into a loose to medium
sandy soil. The pile was driven into the soil. Selected load-displacement data are shown in the
table below. (a) Determine the allowable load if the se
Exercise 7.1:
An elastic soil is confined laterally and is axially compressed under drained conditions. In soil
mechanics, the loading imposed on the soil is called Ko compression or consolidation. Show that
under the Ko condition,
x
z 1
where is Poiss
Level of Service:
Freeways
Freeway level of service qualitatively reflects
the roadway geometry, traffic flow, and
operational conditions.
Announcement (Oct., 16, 2013)
PAG bike count
No need to attend the training session: Youve
attended the training!
C
12.1 Show that the ultimate load for a strip footing under long-term conditions
1
using the two triangle failure surfaces shown in Fig. P12.1 is Pu B 2 N ,
2
2
2 tan tan 3
2sin 3
where N
1 tan 2 2 1 tan cos sin 3
Solution 12.1
P
B
WB
B
NB
TAB
TAB
NAB
W
10.1 A CD triaxial test was conducted on a loose sand. The axial stress
was held constant and the radial stress was increased until failure
occurred. At critical state, the radial stress was greater than the axial
stress. Show, using Mohrs circle and geom
Midterm II Review
Wrap-up what you have learned to date
Outline
Midterm Exam Information
Brief Review
Reading 4
CE 363 Fall
2
Midterm Exam Two Information
Date: May. 4, 2013 (Mon)
Time: 8:10am~9:30pm (at SAG Hall 101)
70 min exam (Please arrive earlier!)
Example 15.1
Show, using Mohrs circle, that the depth of a tension crack is zcr = 2su/sat for a saturated
clay.
Solution 15.1
Show, using Mohrs circle, that the depth of a tension crack is
clay.
su
sat z
The Mohr total stress circle for no-tension limit i
CE 363
Fall 2013
Instructor:
Yao-Jan Wu
CE363 Assignment #4 - Hint
Problems from Textbook
5.7 A section of highway has the following flow-density relationship:
q = 50*k 0.156*k2
What is the capacity of the highway section, the speed at capacity, and the d
CE 363
Fall 2013
Instructor:
Yao-Jan Wu
CE 363 Assignment #7
Due at the class on Dec. 9th, 2013 (Monday)
Problems from Textbook (Total points: 100) - Solution
8.1 A large retirement village has a total retail employment of 120. All 1600 of the
households
CE 363
Fall 2013
Instructor:
Yao-Jan Wu
CE 363 Assignment #2
Due at the class on Sep. 18, 2013 (Wednesday)
Problems from Textbook
3.9 An equal-tangent crest vertical curve connects a +2% initial grade with a -1% final
grade, and is designed for 55 mi/h. T
9.1 A clay soil of thickness H is allowed to drain on the top boundary through a
thin sand layer. A vertical stress of is applied to the clay. The excess
porewater pressure distribution is linear in the soil layer with a value of ut at
the top boundary an
Highway Capacity and
LOS: Concept
Highway capacity and Level of Service (LOS)
analyses provide quantitative measurements
for roadway performance.
Announcement (Oct., 14, 2013)
ITE Joint Meeting
Topic: Indirect Left Turn Intersections in
Tucson, Arizona
D
CE 363
Fall 2013
Instructor:
Yao-Jan Wu
CE 363 Assignment #4
Due at the class on Oct. 11, 2013 (Friday)
Problems from Textbook
Number
Points
Answer
5.7
15
qcap = 4006.4 veh/h, ucap = 25.04 mi/h
When q = qcap/4, k1 = 21.5 veh/mi or k2 = 299.0 veh/mi
5.11
1
Signalized Intersections:
Level of Service Analysis
Level of service reflects the performance of a
signalized intersection.
Announcement (Oct. 11, 2013)
HW4 new deadline next Monday (10/14)
HW4 hint posted
CE 363 Fall
51
Outline
Allocation of Green Time
CE 363
Fall 2013
Instructor:
Yao-Jan Wu
CE 363 Assignment #6
Due at the class on Oct.28, 2013 (Monday)
Problems from Textbook
Number
Points
Answer
6.3
15
305 trucks and buses.
6.5
10
Driver population factor: 0.867
6.9
15
Before: density = 25.08 pc/mi/ln
CE 363
Fall 2013
Instructor:
Yao-Jan Wu
ASSIGNMENT#1 SOLUTION
Problems from Textbook
2.1 A new sports car has a drag coefficient of 0.30 and a frontal area of 21 ft2, and is
traveling at 110 mi/h. How much power is required to overcome aerodynamic drag if
CE 363
Fall 2013
Instructor:
Yao-Jan Wu
CE 363 Assignment #3 - Solution
Problems from Textbook
4.2 A flexible pavement has a 4-inch hot-mix asphalt (HMA) wearing surface, a 7-inch
dense-graded crushed stone base, and a 10-inch crushed stone subbase. The p
CE 218 Mechanics of Fluids
Spring 2013
HOMEWORK #2
(Due 5 PM Monday 27 January)
Conceptual Problems: WP#2 from D2L
Analysis Problems:
H2.1 Find the weight of a 4 cubic-foot tank of oxygen at a pressure of 20
LAB3
CEE440
1. Steady-state Aquifer Response
Plot the head distribution (h in mm) throughout the hydrologic apparatus resulting from each
experiment as a function of distance ( r in mm) from the well. Discuss and compare the
asymmetry in aquifer head obse
CEE 440
Fall 2011
Frederick Tack
Homework 10
1. Stormwater Sewer Design in Phoenix Metro Area
A new development in the Phoenix area requires the design of a simple stormwater collection
system. Below is a site schematic, consisting of four catchments (1.1
CEE 440
Fall 2011
Frederick Tack
Homework 7
1. Channel Transmission Losses in Ephemeral Walnut Gulch, Arizona.
The US Department of Agriculture has operated the Walnut Gulch experiment watershed (~150
km2) in southeastern Arizona since the mid-1950s. Seve
CEE 440
Fall 2011
Frederick Tack
Homework 8
1. Level Pool Reservoir Routing
A reservoir has an uncontrolled spillway such that the relation between elevation, storage and
spillway discharge is given by the following table. Note that the outflow begins at
CEE 440
Fall 2011
Frederick Tack
Homework 9
1. Statistical Properties of Streamflow
As a hydrological consultant to the State of New Mexico, your small company has been asked to provide
a statistical assessment of the streamflow in two basin tributaries t
Matt Hann
CEE440
HW #7
1) a)
The trends of the streamflow volumes and peak discharges are similar in their peaks and valleys.
The other intriguing similarity is how the graphs indicate major storm events happening seven
total times within the measurements
CEE 440
Fall 2011
Frederick Tack
Homework 5
1. Groundwater Wells and hydraulic Gradients in an Unconfined Aquifer
On your first professional assignment as a hydrogeologist, your company drills a nest of three
piezometers in an unconfined alluvial aquifer.