topic Re: Draper-Fabric Exterior Blind in Lighting & Solar Analysis Forum

Draper-Fabric Exterior Blind & Tvis

Anonymous — Thu, 24 May 2018 08:38:30 GMT

Hello,

I am trying to see the impact of exterior blinds for a project. I have the Tvis value of the exterior blind which is made of fabric. Change of RGB value at the appearance tab on the material browser according to the Tvis-RGB calculator requires to insert number of panes and thickness of the glazing. This is not possible for the fabric. In fact, when I enter the thickness of the fabric and write the glazing pane number as 1 , I only receive RGB values 0,0,0.

I was wondering if I it would give me correct results when I create the same real appearance of the fabric at the appearance tab material display.

What would you suggest me to do to calculate the impact of fabric shadings?

Bests,

Nil

Re: Draper-Fabric Exterior Blind

scheerd — Fri, 25 May 2018 17:21:10 GMT

Hello.

Great question.

The parameters of # of panes and thickness refer to the modeled element in Revit, and not necessarily to the specifications of the material. For example, a double-pane window is usually modeled in Revit with a 1 in thick extrusion rather than building up all of the layers.

So to get the most flexibility and precision in the RGB TViz for your blinds, model the blinds object with an object at least 0.5" thick. Thinner elements tend to require very low RGB values, and therefore less precision between value steps.

David

Re: Draper-Fabric Exterior Blind

Anonymous — Tue, 29 May 2018 12:17:01 GMT

Thanks David.

Have a nice day,

Nil

Re: Draper-Fabric Exterior Blind & Tvis

scheerd — Thu, 18 Jul 2019 20:37:03 GMT

Please see important notes about changes to handling of glazing materials for Insight Lighting v4+ at the post below:

https://forums.autodesk.com/t5/lighting-solar-analysis-forum/critical-update-glazing-materials-for-l...

Insight version 4.031 is available here:

When updating to this new version, be sure to check your Glazing materials per the post above

https://insight360.autodesk.com/oneenergy/Landing/Download