Issue:The model analysis takes a significant amount of time; there are memory related error messages during or after analysis;the analysis results are not available due to the size of the analysis results files.
Recommended Solution:In case all the primary load cases specified are not needed individually, but are required in combinations facilitated by a REPEAT LOAD or LOAD COMBINATION commands, I would strongly suggest specifying the same as REFERENCE LOAD. This helps the program to avoid solving the individual primary load cases and to solve only the required cases - this will save a remarkable amount of space.I also would add that for such a big model it would be better using more coarse plate meshing, say 1.5X1.5m. From the Edit menu, choose Edit Input Command file. Please add the following statement as the first line in your model (on the line before the command STAAD SPACE) MEMORY 80 Save the file, and exit the editor. The program might report that there is an error on that line. Ignore the message. Run the analysis.The 80 indicates that STAAD will use up to 80,000,000 4-byte words to hold the input, the displacements, the beam & plate results and the reactions for the primary load cases. The default is 60,000,000. Roughly this is (no of primary cases) * [6*(no of joints) + 12*(no of beams) + 8*(no of plates)]. usually, add 15-25% to be conservative.If 80 does not cater to your requirement, specify MEMORY appropriately. Do not use higher entry than MEMORY 400.