FAQ 000737 EN

Calculation RFEM

What does "positive" and "negative" surface mean?

Answer

The "+" and "-" for the design internal forces and stresses indicate the side of the surface.

The positive side "+" is the one with the local z-axis pointing outwards.

The design internal force m-y,D+ is, for example, the governing bending moment for the reinforcement on the positive surface side.
RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements