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