https://communities.bentley.com/products/building/performance/f/hevacomp-forum/182532/netsys-doesn-t-seem-to-be-adding-cumulative-flow-rates-correctlyHi. I am using Netsys to design the cold water system for an industrial site. When I run the calculation it does not achieve the sum of the outlets. I&#39;ve narrowed this down to two places where the components when added mathematically are greater thanen-USTelligent Community 12https://communities.bentley.com/thread/532807?ContentTypeID=1Tue, 16 Jul 2019 06:46:57 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:cdf37de9-52de-4738-9a4f-0a9afe5840f7Stewart Bulllock<p>Hi Steve</p> <p>Thanks for the reply. The Wiki explained it perfectly.</p> <p>Regards</p> <p>Stewart</p><div style="clear:both;"></div>https://communities.bentley.com/thread/532714?ContentTypeID=1Mon, 15 Jul 2019 15:49:46 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:97f96ce1-aa77-4f5b-aab1-5f500ebb681eStephen Brown<p>Hi Stewart,</p> <p>Assuming you used standard outlet types the&nbsp;software&nbsp;is&nbsp;following the BS standards to take account of diversity in the system using Loading Units. You should refer to <a href="/products/building/performance/w/building_performance__wiki/15526/pipe-sizing---pipe-sizing-standards">this Wiki</a> for more information.</p> <p>Best Regards</p> <p>Steve</p><div style="clear:both;"></div>