<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://communities.bentley.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>01. Adding a Snow Load</title><link>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/43182/01-adding-a-snow-load</link><description /><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>01. Adding a Snow Load</title><link>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/43182/01-adding-a-snow-load</link><pubDate>Tue, 18 Aug 2020 13:25:07 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:39d16c47-1106-4854-9131-b9595bc2d3c1</guid><dc:creator>JamieP</dc:creator><comments>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/43182/01-adding-a-snow-load#comments</comments><description>Current Revision posted to AutoPIPE Wiki by JamieP on 8/18/2020 1:25:07 PM&lt;br /&gt;
&lt;p&gt;To add a snow load in AutoPIPE Vessel you will need to insert a load equal to the density of snow multiplied by the cross sectional surface area of head at the top of the head and multiplied by the height of accumulated snow. See the example below.&lt;/p&gt;
&lt;p&gt;First, we will need an approximation of the snow density:&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " src="/resized-image/__size/320x240/__key/communityserver-wikis-components-files/00-00-00-00-41/Snow-Densities.png" /&gt;&lt;/p&gt;
&lt;p&gt;Our example vessel will have a diameter of 8 meters. Thus, the cross sectional area of the head is equal to:&lt;/p&gt;
&lt;p&gt;Area = (&amp;pi;/4) &amp;times; D&lt;sup&gt;2&lt;/sup&gt; = (3.14/4) &amp;times; (8 m)&lt;sup&gt;2 &lt;/sup&gt;= 50.24 m&lt;sup&gt;2&lt;/sup&gt;&lt;/p&gt;
&lt;p&gt;Snow accumulation = 0.5 m&lt;/p&gt;
&lt;p&gt;Conservative selection of snow (wet and firm) = 700 kg/m&lt;sup&gt;3&lt;/sup&gt;&lt;/p&gt;
&lt;p&gt;Note: This is an idealization as snow accumulated will not be like a cylinder but it will follow head contour.&lt;/p&gt;
&lt;p&gt;Weight of snow = Area &amp;times; Height &amp;times; Density &amp;times; (9.81/10) = 50.24 x 0.5 x 700 x 9.81/10 = 17,250 daN.&lt;/p&gt;
&lt;p&gt;This value can now be applied as a vertical load in the vessel model at the elevation of the vessel.&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " src="/resized-image/__size/320x240/__key/communityserver-wikis-components-files/00-00-00-00-41/APV-Load.png" /&gt;&lt;/p&gt;
&lt;p&gt;Note: Ideally this is a uniformly distributed force but we do not have that option currently.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: Load Case, AutoPIPE Vessel, Snow load, wiki&lt;/div&gt;
</description></item><item><title>Adding a Snow Load</title><link>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/43182/01-adding-a-snow-load/revision/2</link><pubDate>Tue, 18 Aug 2020 13:24:26 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:39d16c47-1106-4854-9131-b9595bc2d3c1</guid><dc:creator>JamieP</dc:creator><comments>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/43182/01-adding-a-snow-load#comments</comments><description>Revision 2 posted to AutoPIPE Wiki by JamieP on 8/18/2020 1:24:26 PM&lt;br /&gt;
&lt;p&gt;To add a snow load in AutoPIPE Vessel you will need to insert a load equal to the density of snow multiplied by the cross sectional surface area of head at the top of the head and multiplied by the height of accumulated snow. See the example below.&lt;/p&gt;
&lt;p&gt;First, we will need an approximation of the snow density:&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " src="/resized-image/__size/320x240/__key/communityserver-wikis-components-files/00-00-00-00-41/Snow-Densities.png" /&gt;&lt;/p&gt;
&lt;p&gt;Our example vessel will have a diameter of 8 meters. Thus, the cross sectional area of the head is equal to:&lt;/p&gt;
&lt;p&gt;Area = (&amp;pi;/4) &amp;times; D&lt;sup&gt;2&lt;/sup&gt; = (3.14/4) &amp;times; (8 m)&lt;sup&gt;2 &lt;/sup&gt;= 50.24 m&lt;sup&gt;2&lt;/sup&gt;&lt;/p&gt;
&lt;p&gt;Snow accumulation = 0.5 m&lt;/p&gt;
&lt;p&gt;Conservative selection of snow (wet and firm) = 700 kg/m&lt;sup&gt;3&lt;/sup&gt;&lt;/p&gt;
&lt;p&gt;Note: This is an idealization as snow accumulated will not be like a cylinder but it will follow head contour.&lt;/p&gt;
&lt;p&gt;Weight of snow = Area &amp;times; Height &amp;times; Density &amp;times; (9.81/10) = 50.24 x 0.5 x 700 x 9.81/10 = 17,250 daN.&lt;/p&gt;
&lt;p&gt;This value can now be applied as a vertical load in the vessel model at the elevation of the vessel.&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " src="/resized-image/__size/320x240/__key/communityserver-wikis-components-files/00-00-00-00-41/APV-Load.png" /&gt;&lt;/p&gt;
&lt;p&gt;Note: Ideally this is a uniformly distributed force but we do not have that option currently.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: Load Case, AutoPIPE Vessel, Snow load, wiki&lt;/div&gt;
</description></item><item><title>Adding a Snow Load</title><link>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/43182/01-adding-a-snow-load/revision/1</link><pubDate>Wed, 21 Aug 2019 15:28:11 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:39d16c47-1106-4854-9131-b9595bc2d3c1</guid><dc:creator>Luke Andrew</dc:creator><comments>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/43182/01-adding-a-snow-load#comments</comments><description>Revision 1 posted to AutoPIPE Wiki by Luke Andrew on 8/21/2019 3:28:11 PM&lt;br /&gt;
&lt;p&gt;To add a snow load in AutoPIPE Vessel you will need to insert a load equal to the density of snow multiplied by the cross sectional surface area of head at the top of the head and multiplied by the height of accumulated snow. See the example below.&lt;/p&gt;
&lt;p&gt;First, we will need an approximation of the snow density:&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " src="/resized-image/__size/320x240/__key/communityserver-wikis-components-files/00-00-00-00-41/Snow-Densities.png" /&gt;&lt;/p&gt;
&lt;p&gt;Our example vessel will have a diameter of 8 meters. Thus, the cross sectional area of the head is equal to:&lt;/p&gt;
&lt;p&gt;Area = (&amp;pi;/4) &amp;times; D&lt;sup&gt;2&lt;/sup&gt; = (3.14/4) &amp;times; (8 m)&lt;sup&gt;2 &lt;/sup&gt;= 50.24 m&lt;sup&gt;2&lt;/sup&gt;&lt;/p&gt;
&lt;p&gt;Snow accumulation = 0.5 m&lt;/p&gt;
&lt;p&gt;Conservative selection of snow (wet and firm) = 700 kg/m&lt;sup&gt;3&lt;/sup&gt;&lt;/p&gt;
&lt;p&gt;Note: This is an idealization as snow accumulated will not be like a cylinder but it will follow head contour.&lt;/p&gt;
&lt;p&gt;Weight of snow = Area &amp;times; Height &amp;times; Density &amp;times; (9.81/10) = 50.24 x 0.5 x 700 x 9.81/10 = 17,250 daN.&lt;/p&gt;
&lt;p&gt;This value can now be applied as a vertical load in the vessel model at the elevation of the vessel.&lt;/p&gt;
&lt;p&gt;&lt;img alt=" " src="/resized-image/__size/320x240/__key/communityserver-wikis-components-files/00-00-00-00-41/APV-Load.png" /&gt;&lt;/p&gt;
&lt;p&gt;Note: Ideally this is a uniformly distributed force but we do not have that option currently.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: Load Case, AutoPIPE Vessel, Snow load, wiki&lt;/div&gt;
</description></item></channel></rss>