https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-valuesen-USTelligent Community 12https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-valuesMon, 24 Aug 2020 09:13:46 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Shane Reganhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsCurrent Revision posted to Hevacomp Wiki by Shane Regan on 8/24/2020 9:13:46 AM<br /> <table style="background-color:#dce5f0;border:0px solid #dce5f0;" border="0"> <tbody> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;" width="30%"><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 style="text-align:left;">Overview</h1> <p style="text-align:left;"><span style="font-family:inherit;font-size:inherit;">The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</span></p> <h1 style="text-align:left;"><span style="font-family:inherit;font-size:inherit;">Method</span></h1> <p style="text-align:left;"><strong>From the SBEM Technical Manual</strong></p> <p style="margin-left:30px;text-align:justify;"><em>&quot;The U-value for ground floors should be adjusted to account for insulation to counter the heat loss through contact with the ground (as a function of the ratio of exposed perimeter to floor area and the thermal resistance of the floor construction) following the guidance specified in section 3.5.2 of &quot;CIBSE Guide Vol. A - 200 (and ISO 13370:2007 - Thermal Performance of Buildings - Heat Transfer via the Ground - Calculation Methods)&quot;</em></p> <p style="text-align:justify;">By default, U-values for ground floors are considered as modified in accordance with BR 443:2003. In this case SBEM will use the user defined U-values. If the user defined ground floor U-values have not been modified to account for ground effect or edge insulation, the Ground floor U-values tick box should be unchecked and SBEM will make appropriate modifications of your U-values.</p> <p><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/BR-443-2006.jpg" /></p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/NewLogo.png"><img style="border-width:0px;" alt=" " height="60" src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" width="189" /></a></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: BR 443:2003, SBEM, Hevacomp Mechanical Designer, Ground Floor, U values, PartL</div> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/11Wed, 11 Jul 2018 14:57:58 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Duncan Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 11 posted to Hevacomp Wiki by Duncan Brown on 7/11/2018 2:57:58 PM<br /> <table style="background-color:#dce5f0;border:0px solid #dce5f0;" border="0"> <tbody> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;" width="30%"><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 style="text-align:left;">Overview</h1> <p style="text-align:left;"><span style="font-family:inherit;font-size:inherit;">The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</span></p> <h1 style="text-align:left;"><span style="font-family:inherit;font-size:inherit;">Method</span></h1> <p style="text-align:left;"><strong>From the SBEM Technical Manual</strong></p> <p style="margin-left:30px;text-align:justify;"><em>&quot;The U-value for ground floors should be adjusted to account for insulation to counter the heat loss through contact with the ground (as a function of the ratio of exposed perimeter to floor area and the thermal resistance of the floor construction) following the guidance specified in section 3.5.2 of &quot;CIBSE Guide Vol. A - 200 (and ISO 13370:2007 - Thermal Performance of Buildings - Heat Transfer via the Ground - Calculation Methods)&quot;</em></p> <p style="text-align:justify;">By default, U-values for ground floors are considered as modified in accordance with BR 443:2003. In this case SBEM will use the user defined U-values. If the user defined ground floor U-values have not been modified to account for ground effect or edge insulation, the Ground floor U-values tick box should be unchecked and SBEM will make appropriate modifications of your U-values.</p> <p><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/BR-443-2006.jpg" /></p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/NewLogo.png"><img style="border-width:0px;" alt=" " height="60" src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" width="189" /></a></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: BR 443:2003, SBEM, Hevacomp Mechanical Designer, Ground Floor, U values, PartL</div> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/10Wed, 11 Jul 2018 14:38:38 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Duncan Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 10 posted to Hevacomp Wiki by Duncan Brown on 7/11/2018 2:38:38 PM<br /> <table style="background-color:#dce5f0;border:0px solid #dce5f0;" border="0"> <tbody> <tr> <td style="text-align:right;"><strong>&nbsp;</strong></td> <td style="text-align:right;" width="30%"><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 style="text-align:left;">Overview</h1> <p style="text-align:left;"><span style="font-family:inherit;font-size:inherit;">The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</span></p> <h1 style="text-align:left;"><span style="font-family:inherit;font-size:inherit;">Method</span></h1> <p style="text-align:left;"><strong>From the SBEM Technical Manual for PartL 2010</strong></p> <p style="margin-left:30px;text-align:justify;"><em>&quot;The U-value for ground floors should be adjusted to account for insulation to counter the heat loss through contact with the ground (as a function of the ratio of exposed perimeter to floor area and the thermal resistance of the floor construction) following the guidance specified in section 3.5.2 of &quot;CIBSE Guide Vol. A - 200 (and ISO 13370:2007 - Thermal Performance of Buildings - Heat Transfer via the Ground - Calculation Methods)&quot;</em></p> <p style="text-align:justify;">By default, U-values for ground floors are considered as modified in accordance with BR 443:2003. In this case SBEM will use the user defined U-values. If the user defined ground floor U-values have not been modified to account for ground effect or edge insulation, the Ground floor U-values tick box should be unchecked and SBEM will make appropriate modifications of your U-values.</p> <p><img style="display:block;margin-left:auto;margin-right:auto;" alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/u-vals-gfloor.jpg" /></p> <p><a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-00-18/NewLogo.png"><img style="border-width:0px;" alt=" " height="60" src="/cfs-file.ashx/__key/communityserver-components-sitefiles/TSG-Logo.png" width="189" /></a></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: BR 443:2003, SBEM, Hevacomp Mechanical Designer, Ground Floor, U values, PartL</div> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/9Tue, 28 Mar 2017 12:00:26 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Duncan Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 9 posted to Hevacomp Wiki by Duncan Brown on 3/28/2017 12:00:26 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 style="text-align:left;">Overview<span style="font-size:12pt;font-family:Arial;"><br /></span></h1> <p style="text-align:justify;"><span style="color:#1e90ff;">This article is relevant to PartL 2006 and 2010 only</span></p> <p style="text-align:justify;">The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</p> <h1>Method</h1> <p style="text-align:left;"><strong>From the SBEM Technical Manual for PartL 2010</strong></p> <p style="text-align:justify;margin-left:30px;"><em>&quot;The U-value for ground floors should be adjusted to account for insulation to counter the heat loss through contact with the ground (as a function of the ratio of exposed perimeter to floor area and the thermal resistance of the floor construction) following the guidance specified in section 3.5.2 of &quot;CIBSE Guide Vol. A - 200 (and ISO 13370:2007 - Thermal Performance of Buildings - Heat Transfer via the Ground - Calculation Methods)&quot;</em></p> <p style="text-align:justify;">By default, U-values for ground floors are considered as modified in accordance with BR 443:2003. In this case SBEM will use the user defined U-values. If the user defined ground floor U-values have not been modified to account for ground effect or edge insulation, the Ground floor U-values tick box should be unchecked and SBEM will make appropriate modifications of your U-values.</p> <p><img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/u-vals-gfloor.jpg" /></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><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: BR 443:2003, SBEM, Hevacomp Mechanical Designer, Ground Floor, U values, PartL</div> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/8Wed, 16 Nov 2016 15:33:54 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Duncan Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 8 posted to Hevacomp Wiki by Duncan Brown on 11/16/2016 3:33:54 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 style="text-align:left;">Overview<span style="font-size:12pt;font-family:Arial;"><br /></span></h1> <p style="text-align:center;"><span style="color:#1e90ff;"><strong>This article is relevant to PartL 2006 and 2010 only</strong></span></p> <p>The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</p> <h1>Method</h1> <p style="text-align:left;"><strong>From the SBEM Technical Manual for PartL 2010</strong></p> <p style="text-align:justify;margin-left:30px;"><em>&quot;The U-value for ground floors should be adjusted to account for insulation to counter the heat loss through contact with the ground (as a function of the ratio of exposed perimeter to floor area and the thermal resistance of the floor construction) following the guidance specified in section 3.5.2 of &quot;CIBSE Guide Vol. A - 200 (and ISO 13370:2007 - Thermal Performance of Buildings - Heat Transfer via the Ground - Calculation Methods)&quot;</em></p> <p style="text-align:justify;">By default, U-values for ground floors are considered as modified in accordance with BR 443:2003. In this case SBEM will use the user defined U-values. If the user defined ground floor U-values have not been modified to account for ground effect or edge insulation, the Ground floor U-values tick box should be unchecked and SBEM will make appropriate modifications of your U-values.</p> <p><img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/u-vals-gfloor.jpg" /></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><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: BR 443:2003, SBEM, Hevacomp Mechanical Designer, Ground Floor, U values, PartL</div> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/7Thu, 03 Nov 2016 14:13:23 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Duncan Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 7 posted to Hevacomp Wiki by Duncan Brown on 11/3/2016 2:13:23 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> <hr style="width:100%;" /> <p style="text-align:center;"><span style="color:#1e90ff;"><strong>This article is relevant to PartL 2006 and PartL 2010 only</strong></span></p> <hr style="width:100%;" /> <h1>Overview<span style="font-size:12pt;font-family:Arial;"> </span></h1> <p>The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</p> <h1>Method</h1> <p style="text-align:left;"><strong>From the SBEM Technical Manual for PartL 2010</strong></p> <p style="text-align:justify;margin-left:30px;"><em>&quot;The U-value for ground floors should be adjusted to account for insulation to counter the heat loss through contact with the ground (as a function of the ratio of exposed perimeter to floor area and the thermal resistance of the floor construction) following the guidance specified in section 3.5.2 of &quot;CIBSE Guide Vol. A - 200 (and ISO 13370:2007 - Thermal Performance of Buildings - Heat Transfer via the Ground - Calculation Methods)&quot;</em></p> <p style="text-align:justify;">By default, U-values for ground floors are considered as modified in accordance with BR 443:2003. In this case SBEM will use the user defined U-values. If the user defined ground floor U-values have not been modified to account for ground effect or edge insulation, the Ground floor U-values tick box should be unchecked and SBEM will make appropriate modifications of your U-values.</p> <p><img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/u-vals-gfloor.jpg" /></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><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: BR 443:2003, SBEM, Hevacomp Mechanical Designer, Ground Floor, U values, PartL</div> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/6Thu, 03 Nov 2016 12:42:47 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Duncan Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 6 posted to Hevacomp Wiki by Duncan Brown on 11/3/2016 12:42:47 PM<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> <hr style="width:100%;" /> <p style="text-align:center;"><span style="color:#800000;"><strong>This article is relevant to PartL 2006 and PartL 2010 only</strong></span></p> <hr style="width:100%;" /> <p></p> <h1>Overview<span style="font-size:12pt;font-family:Arial;"> </span></h1> <p>The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</p> <h1>Method</h1> <hr style="width:100%;" /> <p style="text-align:center;"><strong>From the SBEM Technical Manual for PartL 2010</strong></p> <p style="text-align:justify;">The U-value for ground floors should be adjusted to account for insulation to counter the heat loss through contact with the ground (as a function of the ratio of exposed perimeter to floor area and the thermal resistance of the floor construction) following the guidance specified in section 3.5.2 of &quot;CIBSE Guide Vol. A - 200 (and ISO 13370:2007 - Thermal Performance of Buildings - Heat Transfer via the Ground - Calculation Methods)</p> <hr style="width:100%;" /> <p style="text-align:justify;">By default, U-values for ground floors are considered as modified in accordance with BR 443:2003. In this case SBEM will use the user defined U-values. If the user defined ground floor U-values have not been modified to account for ground effect or edge insulation, the Ground floor U-values tick box should be unchecked and SBEM will make appropriate modifications of your U-values.</p> <p><img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/u-vals-gfloor.jpg" /></p> <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: SELECTservices, Hevacomp Mechanical Designer, TechNote</div> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/5Tue, 17 Mar 2015 11:37:50 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Stephen Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 5 posted to Hevacomp Wiki by Stephen Brown on 3/17/2015 11:37:50 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> <hr style="width:100%;" /> <p style="text-align:center;"><span style="color:#800000;"><strong>This article is relevant to PartL 2006 and PartL 2010 only</strong></span></p> <hr style="width:100%;" /> <p></p> <h1>Overview<span style="font-size:12pt;font-family:Arial;"> </span></h1> <p>The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</p> <h1>Method</h1> <hr style="width:100%;" /> <p style="text-align:center;"><strong>From the SBEM Technical Manual for PartL 2010</strong></p> <p style="text-align:justify;">The U-value for ground floors should be adjusted to account for insulation to counter the heat loss through contact with the ground (as a function of the ratio of exposed perimeter to floor area and the thermal resistance of the floor construction) following the guidance specified in section 3.5.2 of &quot;CIBSE Guide Vol. A - 200 (and ISO 13370:2007 - Thermal Performance of Buildings - Heat Transfer via the Ground - Calculation Methods)</p> <hr style="width:100%;" /> <p style="text-align:justify;">By default, U-values for ground floors are considered as modified in accordance with BR 443:2003. In this case SBEM will use the user defined U-values. If the user defined ground floor U-values have not been modified to account for ground effect or edge insulation, the Ground floor U-values tick box should be unchecked and SBEM will make appropriate modifications of your U-values.</p> <p><img style="margin-right:auto;margin-left:auto;display:block;" alt=" " src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/u-vals-gfloor.jpg" /></p> <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: SELECTservices, Hevacomp Mechanical Designer, TechNote</div> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/4Fri, 12 Dec 2014 12:26:01 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Duncan Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 4 posted to Hevacomp Wiki by Duncan Brown on 12/12/2014 12:26:01 PM<br /> <p><b><img width="189" height="60" style="border-width:0px;" alt=" " src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" /></b></p> <table align="left" 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> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <hr style="width:100%;" /> <p style="text-align:center;"><span style="color:#800000;"><strong>This article is relevant to PartL 2006 and PartL 2010 only</strong></span></p> <hr style="width:100%;" /> <p></p> <h1>Overview<span style="font-size:12pt;font-family:Arial;"> </span></h1> <p>The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</p> <h1>Method</h1> <hr style="width:100%;" /> <p style="text-align:center;"><strong>From the SBEM Technical Manual for PartL 2010</strong></p> <p style="text-align:justify;">The U-value for ground floors should be adjusted to account for insulation to counter the heat loss through contact with the ground (as a function of the ratio of exposed perimeter to floor area and the thermal resistance of the floor construction) following the guidance specified in section 3.5.2 of &quot;CIBSE Guide Vol. A - 200 (and ISO 13370:2007 - Thermal Performance of Buildings - Heat Transfer via the Ground - Calculation Methods)</p> <hr style="width:100%;" /> <p style="text-align:justify;">By default, U-values for ground floors are considered as modified in accordance with BR 443:2003. In this case SBEM will use the user defined U-values. If the user defined ground floor U-values have not been modified to account for ground effect or edge insulation, the Ground floor U-values tick box should be unchecked and SBEM will make appropriate modifications of your U-values.</p> <p><img style="margin-right:auto;margin-left:auto;display:block;" src="/resized-image/__size/940x0/__key/communityserver-wikis-components-files/00-00-00-00-18/u-vals-gfloor.jpg" alt=" " /></p> <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: SELECTservices, Hevacomp Mechanical Designer, TechNote</div> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/3Wed, 26 Jun 2013 19:55:06 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Elisabeth Pryhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 3 posted to Hevacomp Wiki by Elisabeth Pry on 6/26/2013 7:55:06 PM<br /> <p><b><img style="border-width:0px;" alt="" src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" width="189" height="60" /></b></p> <table style="border:0px solid #dce5f0;width:500px;background-color:#dce5f0;" border="0" align="left"> <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> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <p>&nbsp;</p> <h1>Overview<span style="font-size:12pt;font-family:Arial;"> </span></h1> <p><span style="font-size:small;">The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</span></p> <h1>Method</h1> <p><span style="font-size:small;">To see how this impacts your calculation, click<a href="/products/building/performance/m/building_performance_gallery/177352/download.aspx"> here</a></span></p> <h1><span style="font-size:small;"></span>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: SELECTservices, Hevacomp Mechanical Designer, TechNote</div> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/2Tue, 17 Jul 2012 09:17:52 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Duncan Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 2 posted to Hevacomp Wiki by Duncan Brown on 7/17/2012 9:17:52 AM<br /> <p><a href="http://selectservices.bentley.com/en-US"><img border="0" src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" width="175" height="56" alt="" /></a></p> <h1>Document Information</h1> <blockquote> <p><strong>Document Type:</strong> TechNote</p> <p><strong>Product(s):</strong> Hevacomp Mechanical Designer</p> <p><strong>Version(s):</strong>&nbsp;V8i</p> <p><strong>Original Author:</strong> Bentley Technical Support Group</p> </blockquote> <h1>Overview<span style="font-size:12pt;font-family:Arial;"> </span></h1> <p><span style="font-size:small;">The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</span></p> <h1>Method</h1> <p><span style="font-size:small;">To see how this impacts your calculation, click<a href="/products/building/performance/m/building_performance_gallery/177352/download.aspx"> here</a></span></p> <h1><span style="font-size:small;"></span>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> https://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values/revision/1Mon, 16 Jul 2012 13:31:31 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3742787c-1946-415c-8bab-cd93ee169217Duncan Brownhttps://communities.bentley.com/products/building/performance/w/building_performance__wiki/5645/considering-ground-floor-u-values#commentsRevision 1 posted to Hevacomp Wiki by Duncan Brown on 7/16/2012 1:31:31 PM<br /> <p><a href="http://selectservices.bentley.com/en-US"><img border="0" src="/Other/Old_Site_Files/Bentley_Folders/m/support/17560/download.aspx" width="175" height="56" alt="" /></a></p> <h1>Document Information</h1> <blockquote> <p><strong>Document Type:</strong> TechNote</p> <p><strong>Product(s):</strong> Hevacomp Mechanical Designer</p> <p><strong>Version(s):</strong>&nbsp;V8i</p> <p><strong>Original Author:</strong> Bentley Technical Support Group</p> </blockquote> <h1>Overview<span style="font-size:12pt;font-family:Arial;"> </span></h1> <p><span style="font-size:small;">The SBEM calculation engine requires confirmation that U-values for ground floors have been calculated with consideration for heat loss due to contact with the ground</span></p> <h1>Method</h1> <p><span style="font-size:small;">To see how this impacts your calculation, click<a href="/products/building/performance/m/building_performance_gallery/177352/download.aspx"> here</a></span></p> <h1><span style="font-size:small;"></span>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>