It may be recommended to either install the anchors immediately beside the aborted drill hole, provided that anchoring depth is increased by the depth of the aborted drill hole, or make a new drilling at a minimum distance away of twice the depth of the aborted hole. Alternatively, a smaller distance may be chosen, provided the aborted drill hole is filled with high strength mortar. However, unless the aborted drill hole is filled with mortar, it is not permissible under shear or oblique tension load for it to be closer than 1,0 hef (anchor effective depth) or 5 d0 (anchor nominal diameter) to the aborted hole in the direction of load application.
Latest revision: FAQ15 rev0