2014-2015 PCI Big
Beam Capstone
Project
Abdullah Alhaddad, Brian Bloom,
Mingyang Chen, Catherine Irvine
Introduction
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National competition hosted yearly by the Pre-stressed/Precast Concrete
Institute (PCI)
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Purpose of Project [1]
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Challenges students ability to design a pre-stressed concrete beam within
given constraints
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Students participating in the contest will be exposed to real experience in
analyzing and testing pre-stressed/precast beams through application of their
education.
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Background: Pre-stressed Concrete [2]
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Normal concrete tensile strength: 8-14% of compressive strength
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Pre-stressed concrete extends life of structure prior to crack
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Cracks develop early in life cycle of structure
After service load cracks, behaves essentially the same as OPC
Pre-compresses tension zone of a beam to counter tension
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Project Description [3]
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Design of a pre-stressed concrete beam
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Maximum simply supported span of 17 ft
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Maximum length of 19 ft
Load requirements
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Must crack above 20 kips
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Must fail between 35 and 40 kips
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Design judged for lowest weight, lowest cost, and maximum deflection
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Will perform calculations, predictions, testing, and analysis
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Accuracy of predictions will also be judged
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Client & Stakeholders
Dr. Robin Tuchscherer
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Technical Advisor & Client
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Manufacturer of beam
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Contest host and judge
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Staffing Plan
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Project Manager – Catherine Irvine
Responsible for communication outside of the team; dealing with
the client, technical advisor, and beam manufacturer. Schedules
group meetings, ensures all tasks are completed on time.
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Writing Editor – Abdullah Alhaddad
Responsible for quality assurance in all deliverables for the project;
also responsible for the project website.
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Engineering Analysts – Mingyang Chen & Brian Bloom
Responsible for all calculations and analysis of beam options and
the final design. The engineering analysts will review mix designs,
test data, and predict final loads.
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Scope of Services
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Task 1: Project Understanding & Research
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1.1: Understand Technical Requirements
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1.2: Understand Competition Rules
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1.3: Tpac Plant Visit
Task 2: Technical Details & Design
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2.1: Learn basics of pre-stressed design
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2.2: Initial Designs
Task 3: Calculations in Mathcad
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3.1: Learn to use and setup Mathcad
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3.2: Calculations
Task 4: Final Design
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4.1: Decision Matrix
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4.2: Shop drawings
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Scope of Services
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Task 5: Predictions in Response2000
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5.1: Cylinder Tests
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5.2: Predictions
Task 6: Testing & Analysis
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6.1: Test setup
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6.2: Testing
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6.3: Analysis
Task 7: Project Managemeng
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7.1: Application Form
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7.2: Website
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7.3: Final Report
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7.4: UGRADS Presentation
Task 8: Evaluate Broader Impacts of Design
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8.1: Evaluate Impacts
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Exclusions
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Fabrication (done by Tpac)
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Travel except between Flagstaff & Phoenix, AZ
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Shipping from manufacturer to Flagstaff
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Schedule
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Cost of Services
I. Personnel
Classification
Hours*
Billing Rate ($/hr) Cost
Project Manager
192
110
$21,120
Writing Editor
168
86
$14,448
Engineering Analyst #1
196
100
$19,600
Engineering Analyst #2
196
100
$19,600
Total
II. Travel
III.
Subcontract
2 trips to Phoenix @ 286
mi/trip
$74,768
$0.56/mi
$320.32
[4]
Tpac Kiewit Western
Co.
IV. Total
$5000**
$75,088.32
* 8 hours per typical work day x total number of days for each position
**current estimate
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Questions
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References
[1] PCI. (n.d.). Retrieved September 17, 2014, from http://www.pci.org/
[2] Nawy, Edward G. Prestressed Concrete: A Fundamental Approach. 5th ed.
Upper Saddle River, N.J.: Prentice Hall, 2010. Print.
[3] PCI. Big Beam Contest 2015: Official Rules for the PCI Engineering Design
Competition. 2014. PDF file.
[4] IRS (Nov 5, 2014)). Retrieved November 19, 2014 from
http://www.irs.gov/2014-Standard-Mileage-Rates-for-Business,-Medicaland-Moving-Announced
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