https://community.graphisoft.com/t5/Modeling/Velux-Daylight-analysis/m-p/268301#M140057 I have learned to erase one glass in Sketchup before Import to Daylight Visualizer. (Archicad saved to Sketchup). Thu, 23 Mar 2017 14:54:50 GMT eldhead 2017-03-23T14:54:50Z https://community.graphisoft.com/t5/Modeling/Velux-Daylight-analysis/m-p/268300#M140056 <DIV class="actalk-migrated-content"><R>Hi,<BR /> I've been told to use the square root from the LT value when exporting ArchiCAD models because the windows exported from ArchiCAD has two sides. Is there anyone who could illuminate a little? Does Velyx Daylight use only a glass plane. <BR /> Wierd question..I know...but would be interesting to know for the projects where we are on the absolute edge regarding the dayligt.<BR /> <IMG src="https://community.graphisoft.com/legacyfs/online/emojis/icon_smile.gif" style="display : inline;" /> Mats</R></DIV> Tue, 14 Mar 2017 14:40:40 GMT https://community.graphisoft.com/t5/Modeling/Velux-Daylight-analysis/m-p/268300#M140056 Mats_Knutsson 2017-03-14T14:40:40Z https://community.graphisoft.com/t5/Modeling/Velux-Daylight-analysis/m-p/268301#M140057 I have learned to erase one glass in Sketchup before Import to Daylight Visualizer. (Archicad saved to Sketchup). Thu, 23 Mar 2017 14:54:50 GMT https://community.graphisoft.com/t5/Modeling/Velux-Daylight-analysis/m-p/268301#M140057 eldhead 2017-03-23T14:54:50Z