Materials, Coefficients, Notation
The following notation for material parameters is used:
characteristic value of cylindrical compressive strength of concrete
design compressive strength of concrete
average value of compressive strength of concrete
average value of tensile strength of concrete
lower value of the characteristic tensile strength of concrete
design tensile strength of concrete
characteristic tensile strength of steel bar
design tensile strength of steel bar
The characteristic compressive strength of concrete is the basic input parameter given by the class of concrete - it serves to derive the remaining coefficients of reliability (Tbl. 3.1).
αcc, γc, αct, γs are built-in the program - these values can also be input by the user depending on the selected National annex.
The most common notation for geometrical parameters:
effective depth of cross-section
lever arm (arm of internal forces)