TeamCAD BIM eBook v2 ENG

solution given in the construction
stage project for various justified
or unjustified reasons, which the
designer and contractor did not
consider when designing the
construction stage project.
Therefore, we can conclude that a
construction stage project cannot
give an entirely exact digital or
paper 2D replica of the completed
state of a newly constructed
building.
When considering building
structures that were built before
the advent of digital twin model
technology, this puts the facility
user in a worse position, since
from the 2D drawings on the
paper sheets he is not able to
grasp every detail of the building
that he uses or in an orderly
fashion track the changes, maintenance
and life cycle costs of
each element in the building.
Also, it is almost impossible to
imagine that the contractor was
so conscientious during construction
that everything, even the
slightest deviation from the
construction stage project, was
documented by an additional
graphic revision.
Why Do I Need A
Digital Twin Model
Of A Building, If I
Have An As Built
Project?
To better address this issue, it is
best to look at the very definition
of an as built project.
"The as built project is being
made to obtain the use permit,
use, and maintenance of the
facility.
The as built project of a completed
facility is a set of mutually
synced projects showing all the
details of the constructed facility
necessary to determine its
suitability for use.
The as built project can be made
for parts of the building which, in
the opinion of the technical
inspection committee, or following
the technical documentation,
represent the technical and
technological unit and can be
used as such independently, and
for which the suitability for use is
determined in accordance with
the rulebook governing the
technical inspection of facilities
and for which a special use
permit is issued. " (definition is
taken from the site paragraf.rs
from the Rulebook On The
Content, Manner, and Procedure
Of Preparation And Method Of
Control Of Technical Documentation
According To The Class And
Purpose Of The Facility - Official
Gazette RS number73/2019.
From the very definition, we can
see that the as built project,
whether in digital or paper
format, somewhat considers the
facility maintenance, but does not
provide clear guidance on how to
document the maintenance of
the facility, how to assess the
monthly, quarterly, annual life
cycle costs of the facility and
installed equipment.
From a law point of view, it's
enough to do an as built project
that would document all deviations
of the building from the
construction stage project, which
completely ignores the process of
the complete life cycle of the
building and the installed equipment.
What may be good about the
overall story of an as built project
is that in newly designed and
constructed buildings and equipment,
if the BIM workflow is
implemented appropriately in all
project stages, the BIM as built
model can be taken as a starting
model for development of a
digital twin model of the building
and the installed equipment. In
simpler terms, adding attributes
relevant to monitoring the
operating life cycle cost of a
facility to the BIM as built model
JAN 2021
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