For many reasons, including time and cost pressure on projects, the design role has become more and more fragmented. Construction methods have evolved more rapidly. Few design professionals have a good understanding of construction techniques. Consequently, valid concepts of “constructability” are not embedded in the design.
This outcome leads to revision of the design in order to make it more efficient to construct, usually at the tendering stage. To some degree, it amounts to contractors re-designing the project. These changes cause delay and increased cost, as design drawings have to be updated to the revisions. Your chances of getting paid for these changes is very low.
A better solution is to “design in” constructability: Make the design as efficient to build as possible without sacrificing amenity – as an integral part of the design process from the beginning.
There are two ways to test your overall project design for constructability:
- If there is somebody in your office with extensive contract admin experience, get them to review the design at the completion of the concept stage, completion of design development, and midway through documentation.
- If not, go to a contractor you know and trust, and get the same help. The quid pro quo is that you will recommend them to the Client.