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09-04-2009, 04:07 PM #1
Steel Deck/Concrete Slab over Basement
I'm still learning this program...
Does anybody have a method/suggestions for modeling a steel deck with concrete slab spanning a 14'-0" section of a basement?
I'm confounded, to some degree, by the floor heights with this condition.
I have a slab called for in the DBX, all the rooms above are set to Slab...yet, a slab does not appear when I do a 3D Framing view.
Thoughts?Ben Ledbetter
Project Manager
Thomas J. Brennan Architects
Plano, Texas
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ben@brennanarchitects.com
Software:
DataCAD 12.8, SketchUp Pro 8, ArchiCAD 12, Artlantis R2, Chief Architect X3 (Build 13.3.2.20)
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09-04-2009, 05:12 PM #2
Ben,
Is what you want that you are not getting is a 3-D slab in 3-D framing overviews?
I mean what exactly is there that shouldn't be or that should be there that isn't exactly?
Do you want a fully 3-D steel deck supporting a slab?
Do you intend to use the materials list when done or is the important thing the look in 3-D views and elevations?
When I know that I will then know how it needs to be modeled for the goal you have in mind.
DJPLast edited by David J. Potter; 09-04-2009 at 05:14 PM.
David Jefferson Potter
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09-04-2009, 06:16 PM #3
This is what I'm getting...
Seems to me that a floor overview should show the...well, floor.Ben Ledbetter
Project Manager
Thomas J. Brennan Architects
Plano, Texas
972.867.3948
ben@brennanarchitects.com
Software:
DataCAD 12.8, SketchUp Pro 8, ArchiCAD 12, Artlantis R2, Chief Architect X3 (Build 13.3.2.20)
Hardware:
AMD X2 Dual Core 6400
4GB RAM
NVIDIA Quadro FX 1500
Win 7 64-bit
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09-05-2009, 07:29 AM #4
It appears that the room above basement may be defined as open below. If not check which layer that floor is on or create your own slab over basement
D. Scott Hall (The Bridge Troll)
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09-05-2009, 07:41 AM #5
the floor overview camera only shows the current floor
you may need to create a "fake" floor and place on a layer that is only on when using the floor camera
LewLew Buttery
Castle Golden Design - "We make dreams visible"
Lockport, NY
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09-06-2009, 12:12 AM #6
Ben:
I am not so sure you can span 14' with a concrete slab over a steel deck without some additional support underneath (see website page below).
As far as how to model this, you should be able to reproduce the profile of the steel deck material as well as the concrete material on the steel deck. I would probably try this using a polyline solid created in an elevation view. Might be best to make one the width of one of your steel deck panels (e.g., 36"). Perhaps creating the steel deck profile as a CAD line reshaped as required and then moving over the polyline solid might be helpful for editing the polyline solid's bottom edge to match the steel decking profile using the break line tool. Don't delete the CAD line yet ... you could reuse it for creating the steel deck material to go directly under the slab.
Once you are done with the PL solid slab and the PL solid steel decking, you could switch back to plan view and stretch them out to match your room's span. It might be best to make the concrete PL solid a different depth by switching back to plan view and dragging its edge out aways to make it easier to find and distinguish between the steel decking PL solid.
Somewhere in the process you could use the Point to Point move tool to attach the steel decking profile directly under the slab.
The only thing left to do would to be making copies of the two as many times as required to fill your room. If you want to have these two count in the materials, you could create a material for each to have them calculate when you build the list.
There might be a way to do this with custom moldings as well. Give one or the other a try and I think you should be able to model this OK. But, you should check on the support requirements as I think you will need extra support for this floor system. Maybe your engineer has already told you this ...???
I have done several designs using the InsulDeck insulated floor system which could easily be designed to span 14' without center supports, but this system requires more depth due to the built-in joist spaces (for reinforced concrete joists) as well as support/proper connections at the side walls. The designs I have done have all been with ICF wall connections. Logix has a similar product manufactured for them by Beaver Plastics. I believe there may be at least one or two other brands of insulated floor systems available as well.
Maybe one of these products would work better for you if you or your customer doesn't want to have the extra supports under a steel deck (if req'd) .... i.e., having a nice flat ceiling. These systems do require engineering .... primarily in making sure the right depth joists and reinforcement bars and placement is used.
Below is a 3D view of a slab over steel deck, the 2D elevation view of the same model .... I created out of the wild blue without any thing to pattern after (36" wide) and also shown is a page from a website link on steel decking.
Maybe the two materials can be combined and made into a symbol just like a joist or beam ... should work I think. You could probably detail all connections in CAD 2D views.
Curt Johnson
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