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amontri
Posts: 72
Registered: ‎10-25-2013
Message 1 of 6 (244 Views)
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Setting U values for curtain walls?

244 Views, 5 Replies
11-26-2013 08:28 AM

How can I set the U value for a curtain wall made of glass?  I tried to go to Edit Type, but the option to edit the structure is disabled, how does one specify the material for a curtain wall?  Thanks for the help...

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Alaaeldin_Alsahli
Posts: 141
Registered: ‎11-19-2013
Message 2 of 6 (228 Views)

Re: Setting U values for curtain walls?

11-26-2013 11:16 AM in reply to: amontri

This is hard coded information so you can't change the U value on a curtain wall

 

 you have two options

Option1 create 2 design options 

the first one where you have your curtain wall on it 

and second design option you will take any wall duplicate it, name is as  (Curtain wall analytical), then create the material and the thickness that you want ( it wont look like a curtain wall but at least you could calculate the U value with it 

 

or

Option 2 is you go to (Analyze) Tab then (heating and cooling load)--- detail tab-- select a space then click on construction type and select the wall you want for exterior wall

 

 

 



Alaaeldin Alsahli


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Valued Contributor
amontri
Posts: 72
Registered: ‎10-25-2013
Message 3 of 6 (202 Views)

Re: Setting U values for curtain walls?

11-27-2013 05:26 AM in reply to: Alaaeldin_Alsahli

Thanks for the response.

 

The problem with Option 2 is that not the entire wall is a curtain wall with glass.  The rooms are shops, with parts of the wall made of glass.

 

Is option 1 really my only hope?

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Alaaeldin_Alsahli
Posts: 141
Registered: ‎11-19-2013
Message 4 of 6 (191 Views)

Re: Setting U values for curtain walls?

11-27-2013 07:21 AM in reply to: amontri

Well then forget about you curtain wall and use Custom windows where you could play with U value



Alaaeldin Alsahli


Please mark Accept as Solution if your question is answered. Kudos gladly accepted. ⇘
Valued Contributor
amontri
Posts: 72
Registered: ‎10-25-2013
Message 5 of 6 (187 Views)

Re: Setting U values for curtain walls?

11-27-2013 07:34 AM in reply to: Alaaeldin_Alsahli

For anyone who is wondering, I just spoke with Autodesk Support in Munich who suggested to click on the system panel element within the curtain wall via the Tab key and from there I can specify the material and the U value.  

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Alaaeldin_Alsahli
Posts: 141
Registered: ‎11-19-2013
Message 6 of 6 (175 Views)

Re: Setting U values for curtain walls?

11-27-2013 10:36 AM in reply to: amontri

this is good to know never thought of it but how are you going to calculate the energy

 

because there is a problem with the curtain wall when comes to energy analysis

 

it doesnt have the same surface area when exported to other software, where a simple window has a better data to be calculated 

read section 

5.6 Windows/Curtain Wall/Spandrel

5.6.3 Curtain Wall

 

http://sustainabilityworkshop.autodesk.com/sites/default/files/core-page-files/leveragingbimforenerg...

 

please keep me updated



Alaaeldin Alsahli


Please mark Accept as Solution if your question is answered. Kudos gladly accepted. ⇘

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