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#Post#: 7--------------------------------------------------
Converting Design model into fabrication models
By: daniel.barbeau@groupecanam.com Date: January 17, 2017, 12:37
pm
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Hey BIM community,
Testing 1-2
Have you ever been involved into the conversion of a design
model into a fabrication models? steel, concrete, wood, MEP?
On which side were you? How well the conversion went? Did you
used any coordination attributes to communicate project status?
I am curious to share your toughts on this.
DB
#Post#: 8--------------------------------------------------
Re: Converting Design model into fabrication models
By: brentmauti Date: January 17, 2017, 2:30 pm
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I have been mostly on the design side and I tend to lean toward
providing more information. I'll ask which file format they
require and also I would be open to providing the raw BIM
(Revit, AECOsim, whatever) so that even if I provide them with
IFCs or something else, they too can augment or test an export
to see what suits them best. It's difficult because design
models are focused on facilitating design needs, but could be
created to facilitate fabrication turnover so long as it doesn't
require too much more "technical" effort. IFCs should be ready
to facilitate appropriate geometric and information transfer for
a fabricator to further...
#Post#: 10--------------------------------------------------
Re: Converting Design model into fabrication models
By: zuberio Date: January 18, 2017, 7:17 am
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Yes, personally I've been involved with concrete - not that much
need to go from design to fabrication there - just add pour
breaks and pull quantities to order the trucks.
On the management side, I've dealt with Steel and M&E trades
taking the design models and producing LOD 400 fabrication +
coordination models. Issues I've run across along the way have
been:
- lack of coordination (pipes through ductwork, ductwork through
ductwork. etc.)
- steel model not being sized correctly - 2D sheets have correct
beam sizes, but actual geometric sizes in model are not as big
as they should be .... makes coordination difficult
- slopes in slabs, pipes, etc need to be correct
- depth of light fixtures need to be correct (Ex: 16" deep pot
lights need to be modeled as such).
Generally the trades take your models and sheets and use them as
a background to redraw all their work. However, now that Revit
2017 has integrated a lot of the feature of CAD FAB MEP into
itself, I know of at least Kelson Mechanical that is planning on
using that for their coordination + fabrication models.
#Post#: 11--------------------------------------------------
Re: Converting Design model into fabrication models
By: DSTATTERI Date: January 26, 2017, 9:27 am
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I have been on both the design and fabrication side for
structural steel. Using SDS2 in the past we would share the
model through CIS2 which needed some mapping efforts. Now with
Tekla Structures, there are direct links available. If the
fabricator uses Tekla we obviously share the native file as it
permits us to use the model checking capabilities for shop
drawing approvals. If not, CIS2 or even IFC if the fabricator
has a IFC to steel converter.
D.Statteri
#Post#: 55--------------------------------------------------
Re: Converting Design model into fabrication models
By: BillMoore Date: February 2, 2017, 9:40 am
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We have provided IFC files of our design model to a Structural
Insulated Panels (SIP) to serve as the basis for cutting the SIP
panels. This process involved some back and forth with the
fabricator before we finally got it all sorted out, but in the
end the fabricator successfully cut the SIP panels using our
model.
The software used to fabricate the SIP panels originated from
Germany and required some updates (based upon the way IFC was
interpreted), as this was almost 2 years ago now. We have since
leveraged this approach successfully on several subsequent
projects.
#Post#: 69--------------------------------------------------
Re: Converting Design model into fabrication models
By: MMartin Date: February 2, 2017, 2:17 pm
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I've never seen any real success in this. Not all, but a lot of
consultants are using 3D software to produce 2D drawings with
very little actual 3D coordination/Building Information and
providing them to us with waiver documents claiming they are not
accurate, only schematic and are not to be used for
construction. I would say we do more remodeling rather than
converting. Further, as many MEP trades are using software like
CAD Fab MEP, they won't use consultant Revit files either and
they start from scratch. As a previous poster mentioned, as
Revit integrates more fabrication features this may change.
A lot of this is driven by the delivery method as well.
Stipulated Sum contracts make this process difficult for
contractors as we come in so late, where in Construction
Management or Design-Build we can have more input/ influence in
the early phases of the model development that can make this
transition a lot better.
#Post#: 178--------------------------------------------------
Re: Converting Design model into fabrication models
By: carlveillette Date: May 12, 2017, 4:11 pm
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On the MEP side, our team works to convert design intent models
in Revit to fabrication LOD400 using SysQue. The process is
pretty simple. We were told a number of times by people around
the Quebec area that SysQue was not working with canadian
standards but after a few tweaks we proved them wrong. ;) !
#Post#: 182--------------------------------------------------
Re: Converting Design model into fabrication models
By: daniel.barbeau@groupecanam.com Date: May 15, 2017, 7:42 am
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Thank you Carl,
Have you worked with other sub contractors?
Curtain walls, cladding, etc...
#Post#: 184--------------------------------------------------
Re: Converting Design model into fabrication models
By: carlveillette Date: May 17, 2017, 5:13 pm
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My understanding is that most curtain wall manufacturers are
working with solidworks. We have received IFC files from
solidworks models but they are usually too heavy (LOD 400+) to
be integrated in most of the BIM software used by designers even
navisworks. Would have been nice to compare design intent with
detailed curtain walls but no success >:( ...
#Post#: 185--------------------------------------------------
Re: Converting Design model into fabrication models
By: zuberio Date: May 18, 2017, 7:04 am
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[quote author=carlveillette link=topic=7.msg184#msg184
date=1495059182]
... but they are usually too heavy (LOD 400+) to be integrated
in most of the BIM software used by designers even navisworks...
[/quote]
That's surprising to me - I don't think I've really come across
anything yet that couldn't be viewed in Navisworks.
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