Coordination drawings shall be made by main contractor and issued to all contractors as an information. This “information” is however making many potential problems such as;
- Sprinkler pipe was installed but found clash with duct, installed sprinkler pipe need to be shifted.
- FCU was installed above ceiling but found maintenance access is blocked by other piping or cable tray, other contractor need to shift installed piping or cable tray.
- Sprinkler dropper pipe cannot install straight downward due to duct below, additional piping is required to avoid duct below.
- Lighting switch was requested by end user to shift to match office layout.
- After concrete wall casted contractor requested to make opening.
The following 4 coordination drawings shall be provided to avoid the contractual dispute. And more important reason to provide coordination drawings is to avoid reworks and make installation easier.
Combined services drawing (for space coordination purpose)
Reflected ceiling layout drawing (for ceiling layout and exposed lighting also)
Wall outlet coordination drawing (for all items installed on wall and floor including panels)
Combined Builder’s Work drawing (for all builder’s work, wall opening, recess, foundation, required additional steel supporting, etc.)
Also Tile layout drawings will be required for tile finishing area such as toilet.
Coordination drawings shall be made by main contractor and issued to all contractors as an information. This “information” is however making many potential problems such as;
- Sprinkler pipe was installed but found clash with duct, installed sprinkler pipe need to be shifted.
- FCU was installed above ceiling but found maintenance access is blocked by other piping or cable tray, other contractor need to shift installed piping or cable tray.
- Sprinkler dropper pipe cannot install straight downward due to duct below, additional piping is required to avoid duct below.
- Lighting switch was requested by end user to shift to match office layout.
- After concrete wall casted contractor requested to make opening.
The following 4 coordination drawings shall be provided to avoid the contractual dispute. And more important reason to provide coordination drawings is to avoid reworks and make installation easier.
Combined services drawing (for space coordination purpose)
Reflected ceiling layout drawing (for ceiling layout and exposed lighting also)
Wall outlet coordination drawing (for all items installed on wall and floor including panels)
Combined Builder’s Work drawing (for all builder’s work, wall opening, recess, foundation, required additional steel supporting, etc.)
Also Tile layout drawings will be required for tile finishing area such as toilet.
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