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Markus Barrera-Kolb

Window & Door net glass & opening areas for schedules?

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As far as I can tell, NNA door & window objects do not include a record field that report the net vent area (WinDoor objects provide these), and doors don't have a field for net glazed area. Any tips on how to calculate / report these in a glazing / fenestration schedule? Thanks!

 

Cheers,

Markus

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Both the Door and Window object contain User Field 1 thru User Field 10, but these are TEXT type fields. You could put your Vent Area in those fields, but you will need to convert the values to numbers so you can add them up. The proper syntax to access the field is 'Door'.'UserFld1' thru 'Window'.'UserFld10'  A small custom worksheet script (basically a custom worksheet function) could be written that would take the text value and convert it into a number that you could then work with.

 

Door do have a Net Glazed Area. This calculates when you turn on Use Vision Panels in the Leaf pane. It can be accessed in a worksheet at ='Door'.'NGA2'

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Thanks Pat – I was hoping that the Door & Window objects might be able to automatically report these values (based on the overall unit, frame, & sash dimensions), rather than having to manually enter the into a user field...

 

Cheers,

Markus

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What is Vent Area and how accurate do you need your callouts to be?  Would this be considered Screen (as in insect screening) area? Could you use the net area of the door or window as a surrogate?

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Vent area would be the net open area with the door or window in an open position. For a door the panel size is probably close enough, for a window that's going to vary quite a bit, especially depending on the operation of the window, e.g. casement vs. slider or single-hung.  Can be useful information when you're trying to gauge natural ventilation capacity in your design...

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Try the field accessed from 'Window'.'OperableSashLen'  You might be able to use this to generate information about the maximum open area of the window.

 

I can see where it would be useful, but VW does not support it automatically right now.

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