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Mon, Feb 12, 2007 at 11:04:10 PM | Ceiling Material Takeoff

#1

Jhui


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I'm gonna try to explain this as best as I can:

We're testing Revit out and I ran a materials takeoff on our ceilings.  I've run into some doubles (basically the takeoff is counting the ceiling suspension systems twice)  the only differences we can see are the 1) material: volume and 2) material: name.

We can't figure out why it's counting it twice.  We've assigned a material: name, material: cost, and various other material things.  Revit automatically assigns it to one of the items.  Here's a screenshot:

 



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Tue, Feb 13, 2007 at 2:22:48 PM | Ceiling Material Takeoff

#2

Jhui


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Just realized this is the wrong thread.  This should be posted in Revit Buildings

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Tue, Feb 13, 2007 at 7:52:14 PM | Ceiling Material Takeoff

#3

TomDorner


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When you create a material schedule you get a line item for each 'layer' of the component wall or in your case ceiling.  If you want to only get the area of the 'finished' surface then you have to create a strategy to filter out the unwanted materials from your schedule.  A simply way of doing it is to give the materials you want to schedule a 'type mark' and then filter your material schedule to only include materials with a type mark that 'begins with' does not begin with''is great than' or any of the other database filters that Revit can apply.

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Tue, Feb 13, 2007 at 7:59:34 PM | Ceiling Material Takeoff

#4

Jhui


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I see what you're saying and its probably what we'll end up doing but I still don't understand how the takeoff list counts the area/component twice with the only difference being in the material name and volume.

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Tue, Feb 13, 2007 at 9:53:01 PM | Ceiling Material Takeoff

#5

TomDorner


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Chances are you used a compound ceiling which is comprised of two layers.  Each layer gets assigned a material and each material for each layer gets scheduled.  In a compund ceiling with two layers each layer/material will have the same area but each with a different volume.

 


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Tue, Feb 13, 2007 at 9:58:04 PM | Ceiling Material Takeoff

#6

Jhui


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So the filter is the best remedy for this occassion?

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Thu, Feb 15, 2007 at 9:19:57 PM | Ceiling Material Takeoff

#7

Jhui


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I was able to speak with some others about this and it turns out that, I think TomDorner was hitting this too, that our ceiling is a compound ceiling and it created a line for the 2'x2' ceiling tiles and a line for the grid system.

Thanks folks.


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