Kiet Dao
Master of Engineering – Engineer In Training #012628
ENGINEER PORTFOLIO
Project: BLUETOOTH SOLUTION ON ORACLE ROAD (SR 77) AND GRANT ROAD
Objective: To collect and manage Bluetooth data for travel time analysis and traffic performance
Approach: Bluetooth devices are developed by the Smart Transportation Lab at University of Arizona
Installation and data collection are coordinated with the City of Tucson and Arizona DOT
Anonymous and unique MAC address are collected with time stamp to match and determine travel
time
Result: Data collected is processed and analyzed to provide preliminary results to the agency
Figure 1 Figure 2
Figure 3
Figure 4
Project: T-BEAM BRIDGE STATIC LOADING ANALYSIS
Objective:To analyze static loading on T-Beam bridge using Finite Element Method with COMSOL
MULTIPHYSICS
Approach: Two T-Beam spans of 50 meter including 10m flange and 1.5m web
Cylindrical piers with radius of 1m and depth of 20m located at the bottom of the web
Bottom of the piers and one end of the structure are fixed while the other end are free to move
Stationary loading with heavy trucks in blue, cars and motorcycles in black
Structure are analyzed with 1.5m web and 2m web to investigate the resistance to loading
condition
Result: The deformation of the structure is recorded in both scenario
Trucks are the main factor that heavily affect bridge structure
It is suggested that the depth of the web should be increase to resist the load
Figure 1: Constraints on structure Figure 2: Locations of loading
Figure3: Triangle elements are used in COMSOL Figure 4: Stress shown in XY direction
Figure 5: Deformation of the piers Figure 6: Deformation of the deck where the loading
concentrated
Project: BRIDGE DESIGN WITH OPEN CHANNEL FLOW
Objective: To design a bridge crossing over Santa Cruz River using HEC-RAS, HEC-GeoRAS and ArcGIS
Approach: Digital Elevation Model (DEM) is imported into ArcGIS to prepare geometric data
Geometry layers are added such as stream centerline, bank lines and cross section cuts
Cross section cuts are extended into the flood plain along the bank and the roadway approach at
the crossing
Geometric data is then imported into HEC-RAS for flow analysis and bridge design including deck,
piers and approach transition.
Result: Water surface profile of inside and outside of the channel in subcritical condition
Deck with 3ft of freeboard and sloping approach that connect to the existing roadway
Deck with 4 lanes of traffic, 2 bike lanes and 2 sidewalks
Piers with 4ft diameter and the water passing the piers is in subcritical condition.
Scour count shows that the spacing of the piers is appropriate
Figure 1: DEM data Figure 2: Cross section cut
grad Plan: grad 5/3/2017 RS=70643.07Upstream (Bridge)
SantaCruz Ina-Broadway 2370 Legend
2400 Legend
EG PF 1 2360 Ground
Elevation (ft)
WS PF 1
Levee
2350 Crit PF 1 2350
Bank Sta
Ground
Left Levee 2340
Right Levee
2300 2330
2320
0 500 1000 1500 2000
Elevation (ft)
2250
RS=70643.07Downstream (Bridge)
2370
2200 2360
Elevation (ft)
2350
2150
2340
2330
2100
0 20000 40000 60000 80000 100000 120000 140000 160000 2320
0 500 1000 1500 2000
Main Channel Distance (ft)
Station (ft)
Figure 3: Water surface profile Figure 4: Bridge crossing with transitioning approach
Bridge Scour RS = 70643.07
2360 Legend
WS PF 1
Ground
Levee
2350
Bank Sta
Pier Debris
Contr Scour
2340 Total Scour
Elevation (ft)
2330
2320
2310
2300
0 500 1000 1500 2000
Station (ft)
Figure 5: Scour effect Figure 6: Cross section of deck
Project: STREET RETROFIT FOR NON-SIGNALIZED INTERSECTION
Objective: To redesign an intersection to ensure safety for bikes and pedestrians in an urban environment
Approach: The area of study is along Stone Avenue in Tucson, Arizona bounded by Fort Lowell Road and Grant
Road
Demographic data, vehicle usage, annual income and education are being assessed to determine
transportation options and hardships
Lacking of bikes and pedestrians facilities on the corridor, potential conflicts for bikes and
pedestrians crossing at mid-section
Result: Separated bike lanes to add protection to bikes and pedestrians
Pedestrians refuge island
Striped marking for crosswalk
High visibility marking for bike
More activities can be generated along the corridor that can be beneficial to local business
More bus ridership to decrease car usage for safer and healthier environment
Figure 1: Current condition of the chosen intersection
Figure 2: New design proposal for the intersection
Figure 4: Overlay of new design to estimate land
acquisition
Figure 3: Mid-section with new bus stop and refuge island
Figure 5: Model of new bus stop at mid-section Figure 6: Whole view of the intersection
Project: TIME MARKET – STUDENT APARTMENT INTERGRATION (4TH AVENUE)
Objective: To create a new three-story apartment building that incorporates Time Market into the new design
Approach: The building footprint, number of apartments, parking lot arrangement, etc. are parameters that
are completely open to the design team provided that the final product complies with current
zoning codes and historical requirements.
Result: Detail the site, fire protection, grading and landscaping plan, as well as provide a proposed zoning
code, the structural calculations and details, an overview of the necessary geotechnical work, the
details of the retention basin design, and transportation overviews of the proposed site.
An examination of the LEED accreditation will also be included.
Figure 1: Interior arrangement Figure 2: Front view
Figure 3: Front ISO view
Figure 4: Back ISO view
Project: CONCRETE CANOE
Objective: To design and build a concrete canoe following ASCE standard
Approach: The hull is model in SolidWorks and cut using CNC machine
The mix design includes lightweight component and strong bond component
The batch is tested using slump test for stability
The concrete is tested using compressor for strength
The canoe is reinforce with plastic mesh instead of steel cable between each pouring
Result: The concrete canoe is much lighter in weight compared to the previous years with aesthetic
improvement
