Active Member
Posts: 7
Registered: ‎10-29-2013
Message 1 of 13 (644 Views)

Totale Surface Area of Ducts

644 Views, 12 Replies
10-29-2013 09:17 AM

Hello,

i would ask if there is a way to become the totale area of surface of an air duct in the voices of computation, for the invoice.

Example:

Duct length 1000mm 400x400mm
Perimeter multiplied by the length.
Total Area: (400 +400 +400 +400) * 1000 = 1.6 m2

For linear ducts i can make a formula, but for custom ducts and elbows?

Sorry my english.

Thanks.

Active Member
Posts: 7
Registered: ‎10-29-2013
Message 2 of 13 (587 Views)

Re: Totale Surface Area of Ducts

11-11-2013 06:22 AM in reply to: Energytechbz

No one can help me? It's very important for me.

Thank you.

*Expert Elite*
Posts: 910
Registered: ‎03-13-2008
Message 3 of 13 (575 Views)

Re: Totale Surface Area of Ducts

11-12-2013 07:28 AM in reply to: Energytechbz

You can certainly do it but you will need to study the duct fitting in the content builder and come up with the formulas.  This is not a feature that is offered with AutoCAD MEP.

AutoCAD MEP 2014 | Revit 2014 | EastCoast CAD/CAM V6.1 | Visual Studio 2013
Active Member
Posts: 7
Registered: ‎10-29-2013
Message 4 of 13 (568 Views)

Re: Totale Surface Area of Ducts

11-12-2013 07:46 AM in reply to: Keith.Brown

Thank for the response. In native revit ducts i can extract the total area, if i import the ducts in revit MEP will the Total area ducts read from Revit?

*Expert Elite*
Posts: 910
Registered: ‎03-13-2008
Message 5 of 13 (564 Views)

Re: Totale Surface Area of Ducts

11-12-2013 07:55 AM in reply to: Energytechbz

Revit MEP does not have an import function from AutoCAD MEP to Revit MEP.  So im am sorry but what you are asking is just not possible.

AutoCAD MEP 2014 | Revit 2014 | EastCoast CAD/CAM V6.1 | Visual Studio 2013
Member
Posts: 3
Registered: ‎01-14-2014
Message 6 of 13 (356 Views)

Re: Totale Surface Area of Ducts

01-14-2014 03:59 AM in reply to: Energytechbz
Hi.
Im in the same problem, im looking for a formule for duct surface, i see the post is closed, finally, you find some solution for this?
Best regards.

Carlos Morán.
Active Member
Posts: 7
Registered: ‎10-29-2013
Message 7 of 13 (350 Views)

Re: Totale Surface Area of Ducts

01-14-2014 04:31 AM in reply to: Energytechbz

the solution is that is not possible in autocad MEP. Only in Revit MEP

*Expert Elite*
Posts: 910
Registered: ‎03-13-2008
Message 8 of 13 (344 Views)

Re: Totale Surface Area of Ducts

01-14-2014 07:02 AM in reply to: Energytechbz

Energytechbz wrote:

the solution is that is not possible in autocad MEP. Only in Revit MEP

Not totally 100 percent true.  It is possible in autocad mep.  However you will have to develop the formula for each fitting either on the fitting itself using content builder or inside a property set.

Revit is able to do this for you automatically.  (I have not verified this myself however)

AutoCAD MEP 2014 | Revit 2014 | EastCoast CAD/CAM V6.1 | Visual Studio 2013
Active Member
Posts: 7
Registered: ‎10-29-2013
Message 9 of 13 (341 Views)

Re: Totale Surface Area of Ducts

01-14-2014 07:07 AM in reply to: Energytechbz

Yes with duct and elbow is simple, you can resolve with a formula or in excel after the export, but with personalized pieces it's little bit stronger to have the exactly surface.

Member
Posts: 3
Registered: ‎01-14-2014
Message 10 of 13 (289 Views)

Re: Totale Surface Area of Ducts

01-20-2014 10:24 PM in reply to: Energytechbz
Hi again

If somebody are looking for a solution, i do a formule to calcule the area for rectangular elbows and i report it on one table inside the drawing, maybe can help you

fx is the formule:

--------------------------------------------
fx AREA_CODO_RECT
(([codo_Ancho]+100)*1.57)*(2*([codo_Ancho]+[codo_Alto])/1000000)

fx 1_Heigth
Left ("[DuctObject:RectangularConnectionHeight]",2)

fx 1_Width
Left ("[DuctObject:RectangularConnectionWidth]",2)

fx 2_Heigth
Left ("[DuctObject:RectangularConnectionHeight]",3)

fx 2_Width
Left ("[DuctObject:RectangularConnectionWidth]",2)

fx 3_Heigth
Left ("[DuctObject:RectangularConnectionHeight]",3)

fx 3_Width
Left ("[DuctObject:RectangularConnectionWidth]",3)

fx codo_Alto
If [LongVarH] = 11 Then
RESULT = [1_Heigth]
ElseIf "[LongVarH]" = 13 Then
RESULT = [2_Heigth]
ElseIf "[LongVarH]" = 15 Then
RESULT = [3_Heigth]
Else
RESULT= "0"
End if

fx codo_Ancho

If [LongVarW]= 11 Then
RESULT = [1_Width]
ElseIf [LongVarW] = 13 Then
RESULT = [2_Width]
ElseIf [LongVarW] = 15 Then
RESULT = [3_Width]
Else
RESULT = "0"
End If

fx LongVarH
Len("[DuctObject:RectangularConnectionHeight]")

fx LongVarW
Len( "[DuctObject:RectangularConnectionWidth]")

-----------------------------

Best regards.

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