In STAAD foundation Advanced, how can I graphically identify the node at which the displacement is maximum when analyzing a mat foundation ?
You will have to first go to Project Info > Modeling View Options > From the Data Input Pane on the right, check the box Show Nodes under Meshed Nodes.
Subsequently if you go to the Output section and choose the Disp Summary tab and click on any of the rows in the table, the corresponding node will be highlighted graphically.