lawrence farrugia sample
DESCRIPTION
A Sample of Product Design Work entailing the use of a variety of CAD tools.TRANSCRIPT
UNIVERSITY OF MALTA
Faculty of Engineering
Department of Manufacturing
FINAL YEAR PROJECT
B.ENG. (Hons.)
Supporting Documentation
MAY 2011
Design of a Portable Water Purification System
by
Lawrence Farrugia
Table of Contents
Section Page
Quality Function Deployment Matrix 2
Function Means Tree 4
Conceptual Designs 7
Material Selection for Pipe Segments 12
Material Selection for Structural Frame 23
Failure Mode and Effects Analysis 32
Technical Drawings 34
System Renders 64
2
Quality Function Deployment Matrix
3
9
3
1
Phase
e es nput
acity
ion
e bly
mbly
alability
oring
nits
Planning and Design Manufacturing Use
Impo
rtan
ce
Redu
ndancie
Total Pow
er In
Material
Processin
g Cap
Mass
Size
Standardisa
ti
Selling
Price
Quick Assem
b
Simple Assem
Upgrade
ability/Sca
Ease of M
onito
Washable Un
Easy to Operate 2Mobility 6Mobility 6Compact 6Low Cost 8Low Energy Consumption 5Safe to operate 8Assembly of individual modules carried out by unskilled personnel 6Weather proof 4Effective Treatment of Water 10Durable 4Durable 4Cater for peaks in the demands 4Interchangable parts 7Self Suffecient 8
Total 215 242 180 111 139 220 274 598 86 110 110 141 83
e same water
ess
y day
e 5000
Euros
l and
flow
s pressure
cal U
nit P
rocesess with
in th
etreatm
ent stage
Less th
an 200
0 W
Material Selectio
n Proce
2100
litres of w
ater every
Less th
an 300
kg
Less th
an 1 cub
ic m
etre
mum
Selling Price Less th
an
ndard mechanical, electrical
interface
asuring instrumen
ts su
ch as
gauges
Iden
tic
Maxi m
Stan
Mea
4
Function Means Tree
5
To treat water originating from freshwater body
Portable Water Treatment
System
To provide mobility to the
system
To Treat Water for
Microbiological Contamination
Structural Frame
UV Irradiation
To Treat Water for Inorganic
Contaminants
Chlorination
Ozone
Reverse Osmosis
Nano Filtration
Ion Exchange
Coagulation and Flocculation
To Treat Water for Organic
Contaminants
Micro Filtration
Ultra Filtration
To transport the system
Air
Land
Sea/Lake
To have water with low turbidity
Multimedia filters
To have water free from chlorine
Micro Filtration
GAC
To provide assembly of
system elements
To have water with low turbidity
Slow Sand Filtration
Micro Filtration
To have water free from chlorine
GAC
Mounting Clamps
Cable Ties
Clips
To provide chemical
DisinfectionChemical
A
Rapid Gravity Filtration
Function
Means
6
A
To Remove large debris from
Water
Coarse Screening
Fine Screening
To Treat Water for Taste and
Odour
Aeration
Adsorption
To Provide fluid at a specific
pressure
Submersible Pump
Booster Pump
To provide electrical power
PhotoVoltaic Cell
Internal Combustion
Engine
Mains Operated
To generate internal
combustionFuel
To Store Electrical Energy
Batteries
To Treat Water for Turbidity and
Colour
Rapid Gravity Filtration
Slow Sand Filtration
Coagulation and Flocculation
Microfiltration
To cause coagulation of
collodial particles
Chemical Coagulant
Wind Turbine
Water Turbine
7
Conceptual Designs
8
Membrane Modules
Concept C2.1 External Thread of Membrane End Caps
Concept C2.2 External Threaded Fittings for End Caps
Concept 2.3 End Caps fitted with screw threads
Concept 2.4 Eccentric Internal Lock of End‐Cap
Concept C2.6 Geometrical Constrain
Concept C2.5 Straps
Geometrical Constraints
V Shaped Support
Flexible Strap
Threaded Membrane End Caps Adapter Collar
with internal
End Cap
Eccentric Lock
End Cap
Membrane Module
9
CartridgeModules
Concept 3.1 Internal Screw Thread
Concept 3.2 U‐Clamps
Concept 3.3 Hinges
Concept 3.4 Straps
Ultra Violet Membrane Modules
Concept 4.1 U Clamp
Concept 4.2 U Clamp (style II)
U Type Clamps
Cartridge Filter Housing
Screw Insert
Cartridge Filter Housing
Cartridge Filter Cap
Cartridge Filter Housing
Hinges
Flexible Strap
V Shaped Support
UV Filter
U‐Type Clamp
U‐Type Clamp
10
;
Flow Modules
Concept C1.1 Pipe Flange
Concept C1.2 Pipe Thread
Concept C1.3 Push Fits
Concept C1.4
Concept 4.3 U clamp (snap fit)
Concept 4.4 Straps
Flexible Strap
U type clips
UV Modul
V Shaped Support
11
Structural Module
Concept 5.1 Butt Joint
Concept 5.2 Geometrical Fitting
Concept 5.3 Concept 5.4
Male to Female screw thread
Concept 5.5 Geometrical Constraint
Butt Joint
12
Material Selection for Pipe Segments
13
14
Deformation of Housing
Considerable Leakage of Water
8Pressure inside vessel
exceeds design specification
Pressure Relief Valve 6Pressure Relief Valve
becomes engaged 2 96
Monitor and record pressure readings
Deformation of Housing
Restriction of Flow 5Detachment of UV unit
from Module Assembly
Multiple straps used to attach the unit to the
straps 3 Quality Assurance 4 60
Samples should be taken and tested
RustingIncrease in pressure losses as a result of
increase in the surface 2 7
Testing for prolonged exposure to high
intensity UV 5 70
Monitor and record pressure readings
Rusting
Output water contains microbiological
contaminats due to ineffective UV
irradiation
10 7Testing for prolonged exposure to freshwater
3 210Visual Inspection of internal vessel walls
Degradation by UV Water leakage 6Prolonged exposure to
high intensity UV Irraidaiation
Material Selection - Excellent resistance to
degradation by UV Irrddiation
6
Testing for prolonged exposure to high
intensity UV Irradiation
5 180Consider using more
rigid material constrints
Implement UV lamp check, during
preventive maintanace.Implement sampling
point, for water quality testing
Pressure Relief Valve Washable Filter
Tearing of Filter Material
Permeation of Contaminated Water
10Presence of large solid
particles in water source
Preliminary Fine Screens as a pretretment
2Visual Inspection of Water output from
process 2 40 Replace/Wash Filter
Activated Carbon Adsorpion
Improvement Taste,colour and Odour
No more adsorption is possible - filter is
completely impregnated with
contaminants
Permate Water with unaccaptable Taste,
Colour and/or Odour3 Filter lifetime exceeded 5
Testing of Water Samples
5 75 Filter Replacement
Pressure Relief ValvesMaterial Seletion -
High Tensile Strength
Degradation by UV Water leakage 7 UV Degradation
Material Selection - Excellent resistance to
degradation by UV Irrddiation
6
Testing for prolonged exposure to high
intensity UV Irradiation
3 126Change of Material -
use more rigid /specific material constraints
Fouling of Membrane Filter
Increase in pressure losses
3Feed water with very
high turbidity
Provide Sediment filters as a pre-
treatment 7
Pressure Measurement from Pressure Gauge
2 42Wash Membrane Filter
and Install Sediment Filters
Fouling of Membrane Filter
Increase in pressure losses
3Biological Growth of
Bacteria
Use of Anti-Fouling Chemicals during
membrane cleaning8
Visual Inspection of Membrane Filter
3 72
Wash Filters and ensure constant
monitoring of pressure losses
Tearing of Membrane Material
Permeation of Contaminated Water
10Presence of very large
particulate
Design Guideline - Finse Screens are
always employed as a pre-treatment for membrane filters
4Water Sampling Points
and Pressure Measurements
8 320Replace Membrane
immediately
Degradation of Membrane Material
Permeation of Contaminated Water
10Presence of high
chlorine Concentration
Design Guideline - Activated Carbon
Adsorption as a pre-treatment
5 Water Sampling Points 5 250Visual Inspection of
Membrane
Degradation by UV Water leakage 7 UV Degradation
Material Selection - Excellent resistance to
degradation by UV Irrddiation
6
Testing for prolonged exposure to high
intensity UV Irradiation
6 252Change of Material -
use more rigid /specific material constraints
Tearing of Vesssel Wall
Considerable Leakage of Water
8Pressure inside vessel exceeds design limit
Pressure Relief Valve 6Pressure Relief Valve
Engaged 2 96
Ensure Correct Setting of pressure relief valve
Tearing of pipe wallConsiderable Leakage
of Water 8
Pressure inside vessel exceeds design limit
Material Seletion - High Tensile Strength
6Testing of Water Pipes, under designed water
pressure4 192
Change of Material - use more rigid /specific
material constraints
Loose Pipe Connections
Water leakage 3Incorrect pipe
connection during assembly
Selection of Interfaces 7Inspection after
Assmebly 4 84
Position pipe duct correctly
Degradation by UV Water leakage 7 UV Degradation
Material Selection - Excellent resistance to
degradation by UV Irradiation
6
Testing for prolonged exposure to high
intensity UV Irradiation
5 210Change of Material -
use more rigid /specific material constraints
Deformation of Frame Compromised
Structural Integretity7
Compressive Loads Exceed beyond
Material Specifications
Materials Selection - High Compressive
Strength 1
Testing of Frame Under Compressive
Load 3 21
Change Frame Specification and
verify that material supplied is as specified
Plate Tearing Reduced strength of
mechanical connections
8
Material Subject to Tensile Loads that are beyond the material
specification
Material Seletion - High Tensile Strength
1 Testing of Frame 3 24
Change Frame Specification and
verify that material supplied is as specified
Proved connections between structural
frames Shearing of Rivet
Reduced strength of mechanical connections
8Excessive Tensile
StressMaterial Selection and
Rivet Dimension1
Testing of Frame Under Shear Load
3 24Change Rivet Diamater and verify that material supplied is as specified
Bearing Failure of Rivet Material
Rivet Material Deformed
Reduced strength of mechanical connections
7Excessive Compressive
Stress
Material Selection - High Compressive
Strength1
Testing of Rivet Under Compressive Load
3 21Change Rivet Diamater and verify that material supplied is as specified
Ensure that setting of pressure relief valve is set at a value which is
168Implement more rigid
quality checks Electrical Terminals
Provide Electrical Connection between a unit and power source
Loose Electrical Connections
7 Selection of Interfaces
Failure Modes and Effects Analysis
Permeation of Microbiological Contaminants
10 High water trubidity 6
Internal walls of UV unit, subject to a
prolonged exposure to water and other
chemicals
Blockage of filter pores 8Pressure Gauge Setting
on Pressure Releif 2 64 Replace/Wash FilterDirty Filter Pressure Build-up 4
Source of UV Irradiation
UV Lamp
Design Guideline - Sediment Filter is
always a predecessor of UV Filter
Low UV Radiation Intensity
Elimination of Colloidial Particiales
Sediment Filter
Housing
UV
Uni
t Pro
cess
es Material Selection -
Excellent resistance to degradation by
freshwater
Encapsule UV Lamp
Testing of Water Samples
5 300
Encapsule Sediment/Carbon Adsorption/Ion
Exchange Filters
Housing
Pressure inside vessel exceeds design limit
5Pressure Releif valve
engaged 2 808
OccurenceCurrent Design
Controls DetectionDetection RPN
Recommended Action(s)
Part FunctionPotential Failure
Mode Potential Effects of
Failure Severity
Potential Cause(s) of Failure
Current Design Controls Prevention
In correct connection during assembly
6Power Check after
Assembly 4
Mem
bran
e U
nit P
roce
ssC
artr
idge
Fil
ter
Uni
t Pro
cess
es
Provide Treatment for a wide variety of
contaminants Membrane Filter
Str
uctu
ral F
ram
e E
lect
rica
l C
onne
ctio
ns
No electircal signal transmitted
Pip
ewor
k
Pipelines
Tearing of Vessel WallConsiderable Leakage
of Water
Encapsule Membrane Filters
Membrane Filter Housing
Square Sections Provide support to system elements
Rivets
Convey Flow from one water treatment stage
to another
Wat
er T
reat
men
t Uni
t Pro
cess
ess
Wat
er T
reat
men
t Uni
t Pro
cess
ess
Failure Modes and Effects Analysis
34
Computer Aided Design Drawings
35
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Lawrence Farrugia
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TITLE
Membranne Filter Module
10/04/2011
24/03/2011
1:8
1197,79
1143,00
900,00
240,00
240,
00
82,00
63,5
0
160,00
Permeate
Feed
Concentrate
Water Sampling Valve
Horizontal Support (1)
Horizontal Support (2)
Vertical Support
36
A ( 0.40 : 1 )
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TITLE
Membranne Filter Module
10/04/2011
24/03/2011
1:5
A
37
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TITLE
Ultra Violet Filter Module
10/04/2011
24/03/2011
1:6
350,52
560,00
722,02
240,
00
88
,90
Water In
Water Out
Water Sampling Valve
Short Horizontal
Support
Long Horizontal Support
Short Vertical Support
38
B ( 1 : 2 )
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TITLE
Ultra Violet Filter Module
10/04/2011
24/03/2011
1:4
B
39
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TITLE
Cartirdge Filter Module
10/04/2011
24/03/2011
1:6
240,00
222,00
306,28
Vertical Support
Horizontal Support
Water Sampling Valve
435,
37
360,
00
40
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TITLE
Cartirdge Filter Module
10/04/2011
24/03/2011
1:4 41
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TITLE
Booster Pump Module CME 1-6
10/04/2011
24/03/2011
1:6
377,00
371,
7421
0,00 41
7,00
Water In
Water Out
141,
00
340,00
Booster Pump
Horizontal Support (1)
Horizontal Support (2)
Horizontal Support (3)
Vertical Support
Integrated Pump Controller
42
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TITLE
Booster Pump Module CME 1-6
10/04/2011
24/03/2011
1:4 43
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Submersible Pump Module SP 1A-9
10/04/2011
24/03/2011
1:6
160,00
120,
00
101,
00
191,
00
480,00
Water Inlet Water Out
Horizontal Support (1)
Horizontal Support (2)
Vertical Support
900,00
44
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Submersible Pump Module SP 1A-9
10/04/2011
24/03/2011
1:6 45
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Submersible Pump Module SP 1A-9
10/04/2011
24/03/2011
1:5
360,
00
140,
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100,
84240,00
116,00 44,00
80,00
203,00
21,0
0
Horizontal Support
Vertical Support
46
D ( 1 : 2 )
C ( 1 : 2 )
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Submersible Pump Module SP 1A-9
10/04/2011
24/03/2011
1:4
D
C
47
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Pressure Relief Valve
10/04/2011
24/03/2011
1:2
57,15
92,04
154,
69
63,50
Pressure Gauge
Water OutWater In
42,1
1
45,7
2
48
E ( 1.33 : 1 )
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Pressure Relief Valve
10/04/2011
24/03/2011
2:3
E
49
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System Configuration 1
10/04/2011
24/03/2011
0.07:1
908,
24
878,761197,79
50
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System Configuration 1
10/04/2011
24/03/2011
0.15:1 51
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System Configuration 1
10/04/2011
24/03/2011
0.15:1 52
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
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DU
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ION
AL
PR
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UC
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UC
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BY
AN
AU
TOD
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UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 18SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 1
10/04/2011
24/03/2011
0.15:1 53
F ( 0.24 : 1 )
G ( 0.24 : 1 )
H ( 0.24 : 1 )
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
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UC
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UC
ED
BY
AN
AU
TOD
ESK
ED
UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 19SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 1
10/04/2011
24/03/2011
0.12:1
FG
H
54
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
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UC
T PR
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UC
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BY
AN
AU
TOD
ESK
ED
UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 20SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 2
10/04/2011
24/03/2011
1:15
1197,79
910,
55
877,
23
55
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
OD
UC
T PR
OD
UC
ED
BY
AN
AU
TOD
ESK
ED
UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 21SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 2
10/04/2011
24/03/2011
0.15:1 56
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
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UC
T PR
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UC
ED
BY
AN
AU
TOD
ESK
ED
UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 22SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 2
10/04/2011
24/03/2011
0.15:1 57
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
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UC
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UC
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BY
AN
AU
TOD
ESK
ED
UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 23SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 2
10/04/2011
24/03/2011
1:5 58
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
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UC
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UC
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BY
AN
AU
TOD
ESK
ED
UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 24SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 2
10/04/2011
24/03/2011
0.12:1 59
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
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UC
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UC
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BY
AN
AU
TOD
ESK
ED
UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 25SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 3
10/04/2011
24/03/2011
0.09:1
910,
55
760,21938,00
60
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
OD
UC
T PR
OD
UC
ED
BY
AN
AU
TOD
ESK
ED
UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 26SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 3
10/04/2011
24/03/2011
0.15:1 61
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
OD
UC
T PR
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UC
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BY
AN
AU
TOD
ESK
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UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 27SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 3
10/04/2011
24/03/2011
1:5 62
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
OD
UC
T PR
OD
UC
ED
BY
AN
AU
TOD
ESK
ED
UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 28SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 3
10/04/2011
24/03/2011
0.15:1 63
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCT
PRODUCED BY AN AUTODESK EDUCATIONAL PRODUCTP
RO
DU
CE
D B
Y A
N A
UTO
DE
SK E
DU
CAT
ION
AL
PR
OD
UC
T PR
OD
UC
ED
BY
AN
AU
TOD
ESK
ED
UC
ATION
AL P
RO
DU
CT
SHEET 1 OF 1
Drawing 29SCALE
REV
APPROVED
DRAWN
DWG NO
DATE DRAWN
SIZE
Lawrence Farrugia
A4UNITS
mm
TITLE
System Configuration 3
10/04/2011
24/03/2011
0.12:1 64
Rendering
65
66
67
68
69
70
71
72
73
74
75
75
75