Page 230 - Urban Construction Project Management

Drawings and Specifications 185
19. Mock-ups that may be required as part of the construction documents include the
following:
• Curtain wall
• Offices
• Exterior stone walls
• Interior floors and walls
• Special design considerations
• Lobby finishes
• Toilets
• Elevator cabs
• Special ceilings
• Special floor systems (e.g., under floor air conditioning delivery system)

COORDINATION OF DRAWINGS
BY THE DESIGN TEAM

Coordination of drawings is a process where all the various elements of the project are
checked to make sure no conflicts exist. In most cases, the spaces where the building
structure shares space with the mechanical, electrical, sprinkler, plumbing, and cables
are the most vulnerable for conflicts. With the design team using the various levels of
CAD (computer aided design), it is routine to check for conflicts. However, just like
checking the other aspects of the drawings, only if the design team has the time will
conflicts be evaluated.

COORDINATION OF DRAWINGS BY THE CM/GC

Just as the design team checks for conflicts, the CM/GC must also check for potential
conflicts. This must be accomplished as early as possible in the construction process, so
that problems can be resolved prior to installing all the equipment and building elements.
If conflicts are found during construction, then this will only create delays. These delays
can be avoided with proper coordination. The same areas are evaluated as with the
design team—the space that is occupied by the building structure in combination with
the mechanical, electrical, plumbing, sprinkler, and cable systems. The coordination
process usually starts after the building structure has been erected. Since the ductwork is
the largest component after the installation of the building structure, the ductwork shop
drawings then become the basis for conflict investigation. The other trades people then
use the ductwork shop drawings to overlay their components on the drawings and deter-
mine where conflicts may exist. Areas of a building that should be checked for potential
conflicts include, but are not limited to, the following:

1. The plenum space above ceilings
2. Mechanical and electrical rooms