STAADPro v8i rel 20.07.04.12 User Table / Profile Points rendering problem

I recently tried the feature of generating the properties of a built-up section by using the "Tools / Create user table / Add new property" then checking the "Define Profile Polygon" and inputting the perimeter points. I was able to generate the cross-section and the properties, but when I look at the member in the model while rendering "Full Sections" or "Sections Outline", the member is shown offsetted from the local X axis defined by the Start and End joints. I was expecting to see the local X axis going through the CG of the cross section - Is there a way to make this happen?

I'm listing below the input of a simple model where the problem can be observed.

STAAD SPACE
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0
2 50 0 0
MEMBER INCIDENCES
1 1 2
START USER TABLE
TABLE 1
GENERAL
TESTMEMB
1.25 1.5 0 1 0 0.175694 0.09375 0.217853 0.202724 0.1875 1.00894 1.06914 -
0.401111 0.291667 0.000966092 1.5
PROFILE_POINTS
 -0.5 -0.633333 0.5 -0.633333 0.5 0.366667 0 0.866667 -0.5 0.366667
END
MEMBER PROPERTY
1 UPTABLE 1 TESTMEMB
SUPPORTS
1 PINNED
FINISH

Parents
  • I find the same problem (it still persists in version 20.07.06.35).  Although the member centreline is in the correct place in the model and the analysis results appear correct, the rendered depiction of the section is positioned wrongly.  The actual cross-section is in itself drawn correctly - but it has one corner of the section positioned on the centreline of the member.

    When entering the section coordinates I have also found in the past that if a point other than the centroid is used as the local cross-section origin then when the input table is re-opened to check or amend the values then StaadPro will have changed the coordinates to set the local origin to the section centroid.  That's not necessarily a problem but the help file should mention that.  (I  haven't tried to replicate that recently so it might have been fixed already.)

    Perhaps the two effects are related ?

  • Hi Tibi: It is an anomaly in pictorial representation and does not have any bearings on the analysis results.

    Hi Alistair: You are correct about the redifining of the profile co-ordinates based on making cg the origin. I will make it a point to inform to include the same in the help documents.

    Sudip Narayan Choudhury

  • hi.. i want to generate a moment curvature diagram for a beam member at a particular location. Can i do it using Stadd pro. If yes then how??

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