how to remove this error? how to remove this error? Subham30101996 (Civil/Environmental) (OP) 28 Jun 17 08:57 I am getting a error in lusas model.It is "2d QTF8 Element 1 not parallel to the XY plane" Please help me to resolve this. http://files.engineering.com/getfile.aspx?folder=b8c8e250-bb2d-4b4e-ae46-e2 RE: how to remove this error? Ron (Structural) 28 Jun 17 10:30 Not familiar with your software but this error likely results from one or more of your node coordinates being incorrect RE: how to remove this error? Subham30101996 (Civil/Environmental) (OP) 28 Jun 17 10:54 @Ron, incorrect means ,do you want to say that joints are not properly placed? RE: how to remove this error? dik (Structural) 28 Jun 17 13:03 The error could be in the 6th decimal place of your data. Are you using fractions that may not convert to an exact decimal? Dik RE: how to remove this error? rb1957 (Aerospace) 10 Jul 17 18:29 not familiar with LUSAS either, but ... is it complaining about element #1 (a "2D QTF8" element) ? this is part of the base of your channel ? if these elements are supposed to be in global planes, what doe it do with the narrow band of elements that are forming the corner of your channel (at 45deg to global planes) ? why would it want elements to be in a specific plane ?? possibly it's had a nervous breakdown and the message is not really the problem ?? another day in paradise, or is paradise one day closer ?