Home' Facility Perspectives : Vol 9 No 4 Contents SPONSORED ARTICLE
24 FACILITY PERSPECTIVES | VOLUME 9 NUMBER 4
BIM trends -- a new way for existing buildings
Scan to BIM project for Curtin University
BY DON HITCHCOCK, DIRECTOR, ADVANCED SPATIAL TECHNOLOGIES
In today's world of the web, mobile technology and
sophisticated technology, building information models
are required for design, construction and now operations.
Buildings are now being manufactured, not built, and the
sophistication carries through to the operations phase, where
more information, better technology and tools are required.
The question becomes, 'What if we don't have BIM, or the
tools to use the information?'
Just like in the design and construction phases, BIM will
provide more accurate information, as well as functionally
rich, easier-to-maintain and cost-effective ways to manage
facilities. When bidirectionally linked with the facilities
management system, BIM provides a more powerful tool for
building life cycle management.
As there are more existing buildings than new buildings,
which are most likely to be already documented in BIM
format, Advanced Spatial technologies (ASt) set out to find a
better solution for building owners to produce accurate, cost-
effective models to better manage their existing buildings.
ASt worked with Curtin University to convert 83 existing
buildings to high-quality building models in a short time frame.
The project included 28 walkways and connecting bridges,
and an accurate, surveyed site model.
Curtin University's business plan is to replace its existing 2D
drawings, which have proven over time to be inaccurate, and
lacked elevations, sections, details and information such as
building materials, assets and so on.
The solution was to use 3D laser scanning, and ASt
provided the scanning and modelling resources, and
expertise to deliver 85 accurate building models in 90 days.
Curtin's four-stage plan to convert to BIM for their Bentley
campus started with the building externals. The completed
models of the external building envelopes were accurate to
five millimetres, used correct materials and provided outputs
that were immediately useful to the organisation and to the
multiple users on the site. Apart from the actual model, ASt
delivered Navisworks models, a complete set of elevations
and a complete composite site model, with buildings
accurately positioned and georeferenced to the site survey
grid. The 3D laser scanning assisted in updating the site
survey -- a valuable resource to the ongoing master planning
and development of the site.
The following stages of modelling deal with the building's
internal structure and fit-out, services and, finally, the
integration of the models with other technologies, such as
facilities management, and site infrastructure Geographical
Information Systems (GIS). Each stage towards BIM
development provides further benefits and ease of use over
and above the existing 2D drawings system. The models from
stage one immediately became available for use by planners,
Australian Electoral Commission (AEC) consultants, and the
many other users of the information.
ASt's Scan to BIM workflow, and quality assurance (QA)
methodology for 3D laser scanning and building modelling,
proved to deliver accurate, quality models that Curtin
accepted, and the university is now using these for the
ongoing life cycle management of its buildings. ASt used
standard Autodesk Revit tools to produce the models, and
no third-party software was required. The process also
uncovered many inaccuracies with the existing buildings and
2D drawings, which validated the business plan. The project
has now elevated Curtin's capability to work with industry,
AEC consultants and planners with modern BIM technology,
and move forward from the old 2D drawing world.
The continued trending of the cloud, mobility and
increased use of BIM, with fully web-based facilities
management systems, will demand more use of virtual
building models. Having buildings in BIM digital format will
be essential in the new world, as BIM is becoming mandated
and technology is moving forward to deal with design,
construction and facilities operations.
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