Materials, Coefficients, Notation
The following notation for material parameters is used:
characteristic strength of concrete
characteristic strength of reinforcement
design strength of steel in tension
The characteristic compressive strength of concrete is the basic input parameter given by the class of concrete.
The most common notation for geometrical parameters:
cross section width
cross section depth
effective depth of cross section
lever arm (arm of internal forces)
All computations are carried out according to the theory of limit states.