The work presents the theoretical basis of Additional Finite Element
Me-thod (AFEM), which is a variant of the Finite Element Method (FEM)
for analy-sis of reinforced concrete structures at limit state. AFEM
adds to the traditional sequence of problem by FEM the units of the two
well-known methods of the structural design: method of additional loads
and limit state method. The prob-lem is solved by introduction of ideal
failure models and additional design dia-grams formed from additional
finite elements, where each AFE describes the limit state reached by the
main element. The main relations defining the proper-ties of AFEs as
well as the examples of the use of Additional Finite Element Me-thod for
analysis of reinforced concrete structures at limit state are given in
the work too.