water tower proposal 59:005 engineering problem solving-i sections 11 wednesday, november 11, 2004...
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Water Tower Proposal59:005 Engineering Problem
Solving-I Sections 11
Wednesday, November 11, 2004B-TeamChris MettenburgDan KriegGrant GarveyJunyoung Chang
Objective and Description
Build a scale model of a support structure for a water tower
calculate loads on the structural members
test the design physically with an initial model
modify the design to optimize the performance of final design
Our initial testing indicated that our design could hold 47 lbs. without any modifications, so with modification we suspect the model holding 55-65 lbs.
Economic Analysis Costs 40 Girders ($1,250 each)
=$50,000 56 Short Joints ($350 each)
=$19,600 Water Tank =$30,000 Site preparation, water connections, and
access =$55,000 Planning =$45,000 Total =$199,600
ReceiptsReceipts
Year 0 Year 1 Year 2 Year 3 Year 4 Year 5Receipts (199,600.00)$ 50,000.00$ 80,000.00$ 95,000.00$ 95,000.00$ 95,000.00$
Rate 8%NPV $115,908.06IRR 27%
MilestonesMembers Chris Grant Dan Jun Team MT
Completed TA Meeting
25- Oct 27- Oct 1- Nov 3- Nov 8- Nov 10- Nov 15- Nov 17- NovWeek 1 Week 2 Week 3 Week 4 Week 520- Oct
Look atextistingdesigns
Build TestModels
BuildSelectedDesignTest
SelectedDesign
Decide onDesign
DetermineDistrubutionof Forces
EconomicAnalysis
DetermineBest Design
Further Engineering
Further Analysis of Materials Test different designs Look at durability and reliability of design Find the actual limits of the design
Construction Plan
Parts – Grooved top and bottom framesFour main support frames.Four extra support frames on each sideSandwich joints
Details – Two top and bottom frames were added after the initial model test.Triangle shaped extra support frames.Four sticks combined sandwich joints.
Description – Advantage of grooved frame and sandwich joint.
3″
12″
4.5″
Force AnalysisWW
F1W
F7F8
F3
F3
F1
F7
F4
F4F5
F5
F8
F8F7
F6
F6
Θ7
Θ1
Θ7
Θ6
Θ1
Θ1 Θ5
Θ4
Θ3
Θ2Θ1
Inside view of Sandwich Joint
Advantage – Sandwich Joint and grooved frame.
Pass W to the bottom
Disadvantage – X-shaped cross bar & diagonal cross bar
Grooved frame for top and bottom
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