Could someone tell me how to know the directions in ETABS ? like sometimes it says bending moment 1-1 or 1-2 or 3-3
But how to know which one to use or what is the meaning of each notation ?
Have a look at the local coordinate system, where directions 1-2-3 are defined.
Jason McKee proud R&D Manager of Cross Section Analysis & Design
Software for the structural design of cross sections
Moment Curvature Analysis
Interaction Diagrams
Reinforcement Design etc.