Collaboration of the construction team with the architect, engineer and the owner is
preferred to be started on early stages of design phase. At that time, the Building
Information Modeling shall immediately be implemented. If the architect is only
providing 2D drawings, then the construction manager should convert the 2D drawings to
3D intelligent models. When the specialty contractors, especially the MEP contractors
and the steel fabricators are involved, they need to spatially coordinate their work. The
3D coordination can be started right after the model is created to ensure that any same
space interference (hard clash) or clearance clash (soft clash) conflicts are resolved.
Overall, the coordination efforts of construction manager and specialty contractors in
advance of construction help to reduce design errors tremendously and to better
understand ahead of time the work to be done. For example, Research 2 Tower Project
for Colorado Denver Health Science Center distinguished itself with the implementation
of BIM in comparison to Research 1 Tower project which had major complex mechanical
system problems. The BIM usage for Research Tower 2 included 3D MEP coordination