Hi there, is there a reason that one can only select a maximum of 4No. fixings when using profis anchor for fixings into masonry? With fixings into concrete, one can obviously reduce design loads per fixing by increasing the number of fixings, and I was hoping to do the same with fixings into a masonry wall.
Thanks
Thanks for the question. The limitation to the number of anchor is that the software originally followed ETAG 029 Metal injection of anchors for use in masonry with Annex C Design methods for anchorages C1 Scope C.1.1 allowing single anchors or groups with two or four anchors. Now of course, this is TR054 Design method for anchorages with metal injection anchors and screw anchors for use in masonry 1 Scope of technical report Section 1.3 Type of anchors, anchor groups and number of anchors.