Constant a_d of effective standard diameter for tensile strength

Symbol	a_{d_m}
Unit	-
Attribute-ID	constant_a_d_of_effective_diameter_norm_tensile_strength_fkm_2012
Numeric ID	16894
Value Type	PMDouble

The constant a_d,mis a material-specific parameter, with which the technological size factor for the tensile strength K_d,mis calculated. This technological size factor is then used to determine the component tensile strength R_mfrom the norm piece tensile strength R_m,N.