This document relies on characteristic resistances and distances which are stated in a European Technical Specification. In general the design concept is valid in the product dimensions 6 hef/dnom 20. The actual range for a particular fastener may be taken from the relevant European Technical Specification. In minimum the following characteristics should be given in the relevant European Technical Specification as base for the design method of this CEN/TS. NRk,s, VRk,s 0 sRkM , Rk ccr,N, scr,N ccr,sp, scr,sp cmin, smin hmin limitations on concrete strength classes of base material kcr, kucr, k, k2, k3, k4, k8 dnom, hef, lf , limitations on hef/dnom Mi, recommended partial factors see CEN/TS 1992-4-1:xxxx, clause 4