Different temperature values, applied on the top and/or bottom fiber of the plate and/or wall structural element, cause appearance of the deviation of cross section simultaneous in local X'r and Y'r rotational directions of the element plane. Because of plate local axis system is parallel to the global axis system, relation X'r = Xr and Y'r = Y is valid.
For the compatibility reasons, definition of the flexural temperature action for the plate element has to be defined in Yr direction, while for the wall element in Y'r direction.
Uniformly distributed temperature over the middle plain of the wall structural element, cause appearance of the elongation of cross section simultaneous in local X' and Y' directions of the element.
For the compatibility reasons, definition of the axial elongation temperature action for the wall element has to be defined in X' direction.