TUFLOW Message 2118: Difference between revisions

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Revision as of 09:53, 7 December 2011 view source Bill Syme (talk \| contribs) Bureaucrats, Administrators 461 edits No edit summary ← Older edit		Latest revision as of 12:38, 23 December 2022 view source Melissa.Moghanloo (talk \| contribs) Bureaucrats, Administrators 2,918 edits No edit summary
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Line 1: {{TUFLOW_Message \|tuflow_message=CHECK 2118 - Lowered SX ZC Zpt by <change in 2C cell elevation ~~in metres~~>m to 1D node bed level. \|alt_msg=WARNING 2118 - Lowered SX ZC Zpt by <change in 2C cell elevation> to 1D node bed level. ~~\|alt_msg=NA~~ \|type=[[CHECK]] <br> [[WARNING]] \|message_desc=Lowered SX ZC Zpt to 1D node bed level. This message only appears in the _message.mif file and is associated with a special 2D cell style (<u>wjs??? - in the description from the access database, there was a ??? here, was this on purpose</u>).<br> A "Z" flag has been used ~~ato~~to adjust the ZC elevation at each cell at/along the 2D SX object to below the 1D node bed elevation where ZC is higher. The ZC elevation is set to the Cell Wet/Dry Depth below the 1D node bed. It is not recommended to use the Z flag without first checking that the reason for the discrepancy in elevations between 1D and 2D domains is appropriate.<br> The "Z" flag lowers only the cell centre (ZC) and if used inappropriately can result in stability issues if there is a discrepancy between 1D node and surrounding 2D elevations.<br> \|suggestions=Check elevation at 1D node and 2D cells, if a large discrepancy exists, review levels. For example a 1D pit with an elevation (from survey) maybe significantly below the elevation in the DEM. Using a SX connection with a Z flag will lower the cell centre to below the 1D level, but will not lower a flow-path into pit and may cause stability issues.▼ The message switches from a CHECK to a WARNING at 0.3m (or 1 ft if using English Units) to draw further attention to large changes that may indicate potential erroneous inconsistency between the pit/channel level and the ZC ground level.<br> ~~\|discussion_page=* [[Talk:TUFLOW Message 2118\|Discuss Message 2118]]~~ ▲\|suggestions=Check elevation at 1D node and 2D cells, if a large discrepancy exists, review levels. For example a 1D pit with an elevation (from survey) maybe significantly below the elevation in the DEM. Using a SX connection with a Z flag will lower the cell centre to below the 1D level, but will not lower a flow-path into pit and may cause stability issues. To lower flow path into the pit, Z shape polygon can be used. ~~\|link3=''~~ ~~\|link4=''~~ ~~\|prelink=[[TUFLOW_Message_2117\|Message 2117]]~~ \|uplink=[[2xxx_TUFLOW_Messages\|2xxx Messages]] ~~\|nextlink=[[TUFLOW_Message_2119\|Message 2119]]~~ }}