NO LOADING DEFINED FOR UBC LOAD. RUN TERMINATED.

I  am having errors in my staad pro analysis. It goes like this,

*ERROR- A MEMBER WEIGHT VALUE ABOVE IS 0.0

This is what I receive.

I have given self-weight and all other dead and live loads for seismic analysis. But still, it shows like this. Also, no loads were found under the seismic definition. Only the parameters that are designed earlier are displaying. While coding with staad editor it shows zero errors. And this structure has zero duplicate nodes/beams/ structures.

Please anybody help me to figure this out. 

  • Can you please upload the file here? It seems the program is not getting any load value to create the mass matrix.

    Thanks & Regards,
    Abhisek Mandal
    Global Technical Support

  • here is the file. Please check this for errors. Now the software has shown seismic loads. But while analyzing the same error occurs five times as,

    A member weight value above is 0.0. 

  • There are multiple issues in your file.

    1. Under Seismic definition you have also defined the sesimic weight. But for some ember weights the value of weight is zero. Review it and provide correct value, else delete them.

    2. In seismic loading for the second floor load (live load) you have used FLOOR LOAD, which should be replaced by FLOOR Weight. 

    3. The DEFINE WIND command block should be pasted before seismic definition.

    4. You need to delete the Y direction seismic loads.

    5. Additional perform analysis commands need to be deleted.

    I have changed these in the attached file. Please review and understand carefully, before using this file further.

    1588.PROJECT_3STORY.std

    Thanks & Regards,
    Abhisek Mandal
    Global Technical Support

  • Thank you for your help. The file you have sent is working. It shows no error. 

    But I didn't understand the first explanation of yours. I didn't get the idea of seismic weight definition and didn't understand where this member weight had gone zero. 

    A part of your code is given here. could you please tell me why you changed the member weight commands and seismic loads in Y directions into comments only?

    *MEMBER WEIGHT
    *3 27 48 UNI 0 -10.87
    *1 4 5 11 TO 13 15 25 28 29 32 TO 34 36 46 49 50 52 TO 54 56 95 97 TO 99 -
    *100 UNI 0 -7.61
    *9 30 UNI 0 -5.2
    *2 14 26 35 47 51 UNI 0 -3.64
    *67 69 TO 71 73 TO 75 77 UNI 0 -2.09
    FLOOR WEIGHT
    YRANGE 1 6 FLOAD -2.5 XRANGE 0 3.505 ZRANGE 0 8.077 GY
    YRANGE 1 6 FLOAD -2.5 XRANGE 3.505 8.717 ZRANGE 4.115 9.174 GY
    YRANGE 6 9 FLOAD -2.5 XRANGE 0 7.62 ZRANGE 0 8.077 GY
    YRANGE 1 6 FLOAD -1 XRANGE 0 3.505 ZRANGE 0 8.077 GY
    YRANGE 1 6 FLOAD -1 XRANGE 3.505 8.717 ZRANGE 4.115 9.174 GY
    YRANGE 6 9 FLOAD -1 XRANGE 0 7.62 ZRANGE 0 8.077 GY
    YRANGE 1 6 FLOAD -1 XRANGE 0 3.505 ZRANGE 0 8.077 GY
    YRANGE 1 6 FLOAD -1 XRANGE 3.505 8.717 ZRANGE 4.115 9.174 GY
    ONEWAY LOAD
    YRANGE 1 6 ONE -2.5 XRANGE 3.505 5.055 ZRANGE 0 4.115
    YRANGE 1 6 ONE -1 XRANGE 3.505 5.055 ZRANGE 0 4.115
    *MEMBER WEIGHT
    *31 52 96 99 103 106 UNI 0 -3.32
    *live load seismic*

    FLOOR weight
    YRANGE 1 6 FLOAD -2 XRANGE 0 3.505 ZRANGE 0 8.077 GY
    YRANGE 1 6 FLOAD -2 XRANGE 3.505 8.717 ZRANGE 4.115 9.174 GY
    YRANGE 6 9 FLOAD -1.5 XRANGE 0 7.62 ZRANGE 0 8.077 GY
    ONEWAY LOAD
    YRANGE 1 6 ONE -2 XRANGE 3.505 5.055 ZRANGE 0 4.115 GY
    MEMBER LOAD
    31 52 96 99 103 106 UNI GY -0.77

    *primary load definition*
    LOAD 1 LOADTYPE Seismic TITLE EQX+
    1893 LOAD X 1
    LOAD 2 LOADTYPE Seismic TITLE EQX-
    1893 LOAD X -1
    *LOAD 3 LOADTYPE Seismic TITLE EQY+
    *1893 LOAD Y 1
    *LOAD 4 LOADTYPE Seismic TITLE EQY-
    *1893 LOAD Y -1