coordination
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Specialist Diploma in M&E Co-ordination Drawing
(ME 105)
Ng Wan Yuen
email : ngwanyuen@live.com.sg
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Course Content
Principles of Co-ordination works
Methods of Co-ordination
Preparing services co-ordination plan
Preparing sectional view drawing
Preparing reflected ceiling plan
Case study exercises
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Architectural
Electrical
HVAC
FPS
Structural
Mechanical
Principle of Co-ordination work
It is the inter-relation between design and installation of building
services in such a manner as to permit practical, economic and aesthetic
installation within the building structure
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Factors for Consideration
Regulation
Constrains
Maintenance
& servicing
Access
requirement
Ceiling
space
Layout
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Co-ordination is important and required
There are multiple services
There is a positional relationship between the services
Installation or ceiling space is usually limited
Consideration must be given to access and maintenance
To avoid clashes between services
-
Methods of Co-ordination
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Sequential Design
Arch &
Structure
Layout
Sanitary
Layout Duct
Work
HVAC
Piping FPS
Piping
Elect &
Others
Is a multi-disciplinary effort with input from many
people and requires many revisions
-
Less Clashes
- Each designer is fully aware
of other services which may
otherwise clash
Time Consuming
- Need longer time to complete
the services design
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Overlay method Is an iterative process of sequentially overlaying
multi drawings of various trades
2400
5400
ARCHITECTURAL LAYOUT PLAN
2400
5400
300 x 5
00
300 x 5
00
400 x 800
STRUCTURAL PLAN2400
5400
MVAC LAYOUT PLA N
VCD
200x3
00 SA
D
1100x3
00 R
AD
300x3
00 SA
D
1000x3
00 R
AD
1100x300 RAD
450x3
00 SA
D
2400
5400
FIRE SPRINKLER LAYOUT PLAN
100
100
80
25 25 25 25
25 25
25 25 25
25 25 25
25
25
25 25
25
2400
5400
500mm CABLE TRAY
800m
m C
ABLE
TRAY
ELECTRICAL & LI GHTING PLAN
500mm CABLE TRAY
500mm CABLE TRAY
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24
00
54
00
24
00
54
00
30
0 x
5
00
30
0 x
5
00
400 x 800
24
00
54
00
10
01
00
80
25 25 25 25
25 25
25 25 25
25 25 25
25
25
25 25
25
24
00
54
00
VC
D
20
0x
30
0 S
AD
11
00
x3
00
R
AD
30
0x
30
0 S
AD
10
00
x3
00
R
AD
1100x300 RAD
45
0x
30
0 S
AD
24
00
54
00
500mm CABLE TRAY
80
0m
m C
AB
LE
T
RA
Y
500mm CABLE TRAY
500mm CABLE TRAY
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Save Time
- It allows for design of each
service to proceed concurrently
Major Clashes
- May require major revamp of
the services routing
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Scale Model
By constructing of a scale model to visual the
actual installation space requirement
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Mock up
- In project which have standard
layout for every storey
Costly
- It could be costly and time
consuming
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Consideration during
Preparation of drawing
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Bottom Layer
Layer 4
Layer 3
Layer 2
Service Layer Arrangement
Top Layer
Smoke extraction
Fire rate duct and pipes
Concealed sprinklers
Sanitary pipes
Rain water pipes
MV/AC duct
Chilled water pipes
Condenser water pipe
Communication cable
Power cable
Domestic water and Gas
pipes
Exposed sprinklers
Light fittings
Smoke / Heat detector
Speakers
General guideline for services arrangement above ceiling
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Design Criteria
Support
System Insulation Gradient Clearance
Space reserved
for standard
support systems
for components
Insulation for Fire
protection, thermal
energy conservation,
sound isolation,
personnel
protection, etc
Gravity driven
lines e.g. plumbing
and sanitary lines
Clearance to
prevent heat
exchange and
mitigate vibration
concerns, etc
High
Low
Apply design knowledge to assure that the systems satisfy
performance requirement and comply to standards
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Construction
Installation
Space
Installation
Sequence Lead Time
Component B should not
be located within
installation space of
component A
Component A and B
should be installed before
component C
Component Cs lead time is greater than component
A and B, therefore it
should be located below
them
A B
A B
C
A
B
C
Apply construction knowledge to assure feasible designs
and increase the efficiency for building systems
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Operation and Maintenance
Access Space Access Frequency
Component B should be located
within access space of component A
Component B has greater access
frequency requirements then component
A and therefore should be located below
component A
A BA
B
Apply maintenance knowledge to minimize the cost of
operation and maintenance
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Understand the basic principle
for adjusting the services
during co-ordination
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Ductwork and Chilled Water Pipe
o Consider converting a round duct to rectangular duct or
vice versa (refer to the conversion table). The aspect ratio of a
rectangular duct should not be more than 5
W/H
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o FCUs and AHUs are to be installed in the false ceiling. In such
cases, adequate maintenance space shall be provided
o For ceiling suspended AHUs, it may require to construct catwalk
around the equipment
o If noise is a concern, FCU, AHU or ventilation fan may be
enclosed in acoustic enclosure
FCUs and AHUs
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Sanitary and Rain Water Pipe
o Pipe to be installed with a gradient
o Pipe carries condensate water from air-conditioning equipment
to be insulated with external insulation as in the case of
chilled water pipe
o Pipe should not be installed above dining area, bedroom. When
allowed by authority, a tray or double slab shall be provided to
prevent leakage onto the space below
o Ceiling access opening shall be provided for the inspection of
floor trap
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Sprinklers and Sprinkler Pipes
o Installed according to CP 52 (ordinary hazard group)
- max spacing is 4m
- max area of coverage is 12m sq
o Obstructions having a width > 800mm would require
additional sprinklers underneath the obstruction
o Sprinkler guard should be installed at low headroom area
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Electrical and Data Services
o Avoid putting electrical tray / trunking under water pipes
o Preferable near to ceiling level for easy access and pulling of
cable
o Max height for conduit for horizontal DATA cabling shall not
exceed 3.3m from floor level
o Min clearance of 50mm between DATA tray and any services
above it
o Space between DATA tray and false ceiling shall be between
75mm and 150mm
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Important Points To Note When
Preparing Co-ordination Plan
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Services are clearly labeled
Indicate dimension of services
Indicate dimension of space requirement in sectional drawing
Indicate services level eg. BOTxxxx
Indicate distance / spacing between ceiling terminal units to ceiling grid
Services are drawn to scale and provide Legend
Services on plan to tally with sectional drawing
Do not use single line to indicate services
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The purpose of preparing Sectional View Drawing
o Ensure all services are coordinated at congested area
o Ensure all parties are aware of the exact location of their services
o To achieve ceiling height requirement
The purpose of preparing Reflected Ceiling Plan
o Ensure aesthetically pleasant ceiling layout
o Ensure ceiling terminal units are properly coordinated and
installed correctly
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We are ready for the drawings !!!
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Getting start Step 1 (approx. 5 mins)
o transfer structure plan onto Arch plan
o Indicate the dimension and color them
Step 2 (approx. 30 ~ 40 mins)
o Identify clashes area and prepare sectional view drawing
o Indicate the level and relative position of services, label and
dimension of services
Step 3 (approx. 10 mins)
o Transfer sprinkler plan onto Arch plan
o Indicate the size (dia) and color them
Step 4 (approx. 20 mins)
o Transfer ACMV plan onto Arch plan
o Indicate duct, pipe size and color them
Step 5 (approx. 10 mins)
o Transfer electrical & lighting plan onto Arch plan
o Indicate the size of cable tray and color them
Step 6 (approx. 5 mins)
o Written question (consideration for the above changes)
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Service Corridor
Basement Carpark
Retail Shop
Case Study Exercise
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Circular equivalent diameter - de (mm)
Duct
side - a
mm
Duct side - b (mm)
100 150 200 250 300 400 500 600 800 1000 1200 1400 1600 1800 2000
100 109 133 152 168 183 207 227
150 133 164 189 210 229 261 287 310
200 152 189 219 244 266 305 337 365
250 168 210 246 273 299 343 381 414 470
300 183 229 266 299 328 378 420 457 520 574
400 207 260 305 343 378 437 488 531 609 674 731
500 227 287 337 381 420 488 547 598 687 762 827 886
600 310 365 414 457 531 598 656 755 840 914 980 1041
800 414 470 520 609 687 755 875 976 1066 1146 1219 1286
1000 517 574 674 762 840 976 1093 1196 1289 1373 1451 1523
1200 620 731 827 914 1066 1196 1312 1416 1511 1598 1680
1400 781 886 980 1146 1289 1416 1530 1635 1732 1822
1600 939 1041 1219 1373 1511 1635 1749 1854 1952
1800 1096 1286 1451 1598 1732 1854 1968 2073
2000 1523 1680 1822 1952 2073 2186
Equivalent diameters for some common mm rectangular dimensions are shown in
the table below:
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