Glazing Light Transmittance in Part L Resultshttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/25672/glazing-light-transmittance-in-part-l-resultsen-USTelligent Community 12Glazing Light Transmittance in Part L Resultshttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/25672/glazing-light-transmittance-in-part-l-resultsMon, 24 Aug 2020 09:13:48 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:a3ec8695-3ac6-4467-892e-c5d44494403eShane Reganhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/25672/glazing-light-transmittance-in-part-l-results#commentsCurrent Revision posted to Hevacomp Wiki by Shane Regan on 8/24/2020 9:13:48 AM<br /> <table style="border:0px solid #dce5f0;background-color:#dce5f0;" border="0"> <tbody> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td width="30%" style="text-align:right;"><strong>Product(s):</strong></td> <td>Hevacomp Mechanical Designer</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Version(s):</strong></td> <td>V8i (N/A)</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Environment:</strong></td> <td>N/A</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Area:</strong></td> <td>N/A</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Subarea:</strong></td> <td>N/A</td> <td></td> </tr> </tbody> </table> <h1>Overview<span style="font-size:12pt;font-family:Arial;"> </span></h1> <p style="text-align:justify;">The Light Transmittance figures used in a Part L calculation come from two separate locations in Hevacomp. The best resource to distinguish the difference between these is the Data Reflection Report.</p> <h1>Method</h1> <p></p> <p>The first location Transmittance is entered is the Design Database Glazing menu - if this type of glazing is used in the building then this will be displayed in the list of Window/Rooflight constructions as below:</p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/c1.png"><img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/c1.png" /></a></p> <p></p> <p>The Transmission factor can also be entered into Part L under the <em>Miscellaneous &gt; Additional Surface</em> tab. Changing this will not affect the Window/Rooflight constructions above, but only the individual Window in that has been selected from the list of surfaces. This will then be displayed in the Zone (Room) properties, as below:</p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/a2.png"><img width="860" height="591" style="width:801px;height:543px;" alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/a2.png" /></a></p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/NewLogo.png"><img width="189" height="60" style="border-width:0px;" alt=" " src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" /></a></p> <p></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: SBEM, Hevacomp Mechanical Designer, PartL, Light transmittance</div> Glazing Light Transmittance in Part L Resultshttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/25672/glazing-light-transmittance-in-part-l-results/revision/2Thu, 03 Nov 2016 14:09:37 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:a3ec8695-3ac6-4467-892e-c5d44494403eDuncan Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/25672/glazing-light-transmittance-in-part-l-results#commentsRevision 2 posted to Hevacomp Wiki by Duncan Brown on 11/3/2016 2:09:37 PM<br /> <table style="border:0px solid #dce5f0;background-color:#dce5f0;" border="0"> <tbody> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td width="30%" style="text-align:right;"><strong>Product(s):</strong></td> <td>Hevacomp Mechanical Designer</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Version(s):</strong></td> <td>V8i (N/A)</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Environment:</strong></td> <td>N/A</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Area:</strong></td> <td>N/A</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Subarea:</strong></td> <td>N/A</td> <td></td> </tr> </tbody> </table> <h1>Overview<span style="font-size:12pt;font-family:Arial;"> </span></h1> <p style="text-align:justify;">The Light Transmittance figures used in a Part L calculation come from two separate locations in Hevacomp. The best resource to distinguish the difference between these is the Data Reflection Report.</p> <h1>Method</h1> <p></p> <p>The first location Transmittance is entered is the Design Database Glazing menu - if this type of glazing is used in the building then this will be displayed in the list of Window/Rooflight constructions as below:</p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/c1.png"><img alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/c1.png" /></a></p> <p></p> <p>The Transmission factor can also be entered into Part L under the <em>Miscellaneous &gt; Additional Surface</em> tab. Changing this will not affect the Window/Rooflight constructions above, but only the individual Window in that has been selected from the list of surfaces. This will then be displayed in the Zone (Room) properties, as below:</p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/a2.png"><img width="860" height="591" style="width:801px;height:543px;" alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/a2.png" /></a></p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/NewLogo.png"><img width="189" height="60" style="border-width:0px;" alt=" " src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" /></a></p> <p>***:11</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: SBEM, Hevacomp Mechanical Designer, PartL, Light transmittance</div> Glazing Light Transmittance in Part L Resultshttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/25672/glazing-light-transmittance-in-part-l-results/revision/1Thu, 10 Dec 2015 11:54:50 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:a3ec8695-3ac6-4467-892e-c5d44494403eShane Reganhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/25672/glazing-light-transmittance-in-part-l-results#commentsRevision 1 posted to Hevacomp Wiki by Shane Regan on 12/10/2015 11:54:50 AM<br /> <h1><b><img width="189" height="60" style="border-width:0px;" alt=" " src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" /></b></h1> <table style="border:0px solid #dce5f0;width:500px;background-color:#dce5f0;" border="0"> <tbody> <tr> <td style="text-align:right;"><b>&nbsp;</b></td> <td style="text-align:right;"><b>&nbsp;</b></td> <td></td> <td></td> </tr> <tr> <td style="text-align:right;"><b>&nbsp;</b></td> <td style="text-align:right;"><span style="font-size:medium;"><b>Applies To&nbsp;</b></span></td> <td></td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td></td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Product(s):</strong></td> <td>Hevacomp Mechanical Designer</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Version(s):</strong></td> <td>V8i</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Environment:&nbsp;</strong></td> <td>N/A</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Area:&nbsp;</strong></td> <td>N/A</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Subarea:&nbsp;</strong></td> <td>N/A</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>Original Author:</strong></td> <td>Bentley Technical Support Group</td> <td></td> </tr> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td></td> <td></td> </tr> </tbody> </table> <h1>Overview<span style="font-size:12pt;font-family:Arial;"> </span></h1> <p style="text-align:justify;">The Light Transmittance figures used in a Part L calculation come from two separate locations in Hevacomp. The best resource to distinguish the difference between these is the Data Reflection Report.</p> <h1>Method</h1> <p></p> <p>The first location Transmittance is entered is the Design Database Glazing menu - if this type of glazing is used in the building then this will be displayed in the list of Window/Rooflight constructions as below:</p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/c1.png"><img src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/c1.png" alt=" " /></a></p> <p></p> <p>The Transmission factor can also be entered into Part L under the <em>Miscellaneous &gt; Additional Surface</em> tab. Changing this will not affect the Window/Rooflight constructions above, but only the individual Window in that has been selected from the list of surfaces. This will then be displayed in the Zone (Room) properties, as below:</p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/a2.png"><img width="860" height="591" style="width:801px;height:543px;" src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/a2.png" alt=" " /></a></p> <p></p> <hr style="width:100%;" /> <p style="text-align:center;"><span style="color:#800000;"><strong>For an important note on the PartL calculation, please <a href="/products/building/performance/w/building_performance__wiki/15986.an-important-note-on-the-partl-calculation.aspx"><span style="color:#800000;">click here</span></a></strong></span></p> <hr style="width:100%;" /> <h1>See Also</h1> <p><a href="/Products/w/Products__Wiki/product-technotes-and-faqs.aspx">Product TechNotes and FAQs</a></p> <p><a href="/Products/Building/w/Building__Wiki/building-product-technotes-and-faqs.aspx">Building Product TechNotes And FAQs</a></p> <p>&nbsp;</p> <h1>External Links</h1> <p><a title="Bentley homepage" href="http://www.bentley.com/">Bentley homepage</a></p> <p><a href="http://www.bentley.com/en-US/Products/Hevacomp+Mechanical+Designer/">HevacompMechanical Designer</a></p> <p><a href="http://appsnet.bentley.com/kbase/">Bentley Technical Support KnowledgeBase</a></p> <p><a href="http://lms.bentley.com/">Bentley LEARN Server</a></p> <h1>Comments or Corrections?</h1> <p>&nbsp;Bentley&#39;s Technical Support Group requests that you please confine any comments you have on this Wiki entry to this &quot;Comments or Corrections?&quot; section. THANK YOU!</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: Hevacomp, PartL, Glazing</div>