Method for rating and carrying out an attachment of mounted parts on a mounting base, which is formed by concrete or masonry, with a group of anchors, with the following steps: determining a rating value of the transverse load V Sd and a rating value of the tensile load N Sd, for at least one anchor in the anchor group, wherein for the case that for the ratio V Sd /Nsa of the rating value of the transverse load V Sd and the rating value of the tensile load N Sd of at least this anchor in the anchor group the following applies: V Sd /Nsa ≥ 0.3, preferably V Sd /Nsa ≥ 0.6 and particularly preferably V Sd /N Sd ≥ 1.0, and that for this anchor the characteristic resistances for transverse loading V Rk and for tensile loading N Rk, respectively, fulfil the following relationship: V Rk /N Rk ≤ 1.1, wherein all values for V Sd, N Sd, V Rk and N Rk relate to the case of the installation of the anchor perpendicular to the surface of the mounting base, for this anchor it is checked whether the rating value of the load action exceeds the rating value of the resistances of this anchor with respect to at least one failure mechanism, for the case that this anchor is inserted inclined at an angle α Anchor to the surface normal to the surface of the mounting base in such a way that the following applies: α Anchor = k * 3/4 * arctan V Sd / N Sd for N Sd > 0, and α Anchor = k*6 7.5 ° for N Sd = 0, where: 0.6 ≤ k ≤ 1.34, preferably 0.8 ≤ k ≤ 1.34, with the proviso that α Anchor ≤ 75°, wherein the angle of inclination α Anchor is to be measured in the plane in which the transverse load V Sd on which the rating is based lies and within this plane the orientation of the angle is to be selected in such a way that the angle between a longitudinal axis of the anchor and a resulting load becomes smaller than in the case of an installation perpendicular to the surface of the mounting base, and if this is not the case, the at least one anchor of the anchor group is inserted at the angle α Anchor. determining a rating value of the transverse load V Sd and a rating value of the tensile load N Sd, for at least one anchor in the anchor group, wherein for the case that for the ratio V Sd /Nsa of the rating value of the transverse load V Sd and the rating value of the tensile load N Sd of at least this anchor in the anchor group the following applies: V Sd /Nsa ≥ 0.3, preferably V Sd /Nsa ≥ 0.6 and particularly preferably V Sd /N Sd ≥ 1.0, and that for this anchor the characteristic resistances for transverse loading V Rk and for tensile loading N Rk, respectively, fulfil the following relationship: V Rk /N Rk ≤ 1.1, wherein all values for V Sd, N Sd, V Rk and N Rk relate to the case of the installation of the anchor perpendicular to the surface of the mounting base, for this anchor it is checked whether the rating value of the load action exceeds the rating value of the resistances of this anchor with respect to at least one failure mechanism, for the case that this anchor is inserted inclined at an angle α Anchor to the surface normal to the surface of the mounting base in such a way that the following applies: α Anchor = k * 3/4 * arctan V Sd / N Sd for N Sd > 0, and α Anchor = k*6 7.5 ° for N Sd = 0, where: 0.6 ≤ k ≤ 1.34, preferably 0.8 ≤ k ≤ 1.34, with the proviso that α Anchor ≤ 75°, wherein the angle of inclination α Anchor is to be measured in the plane in which the transverse load V Sd on which the rating is based lies and within this plane the orientation of the angle is to be selected in such a way that the angle between a longitudinal axis of the anchor and a resulting load becomes smaller than in the case of an installation perpendicular to the surface of the mounting base, and if this is not the case, the at least one anchor of the anchor group is inserted at the angle α Anchor.