drill-in wedge anchor design for vibrating tension loads
drill-in wedge anchor design for vibrating tension loads
(OP)
For vibrating tension loads on drill-in anchors (redhead or kwikbolt) what type of safety factor should be used...
r.
r.





RE: drill-in wedge anchor design for vibrating tension loads
I have found in the past, even in structures that are not subject to vibration, that wedge type anchors tend to loosen over time. I do not know why they do that, other than to say the grout or concrete that they are placed into, in my cases, typically is less than 60 days old......and I wonder if curing shrinkage has something to do with it.....or it may be that the contractors do not follow the installation guidelines for these anchors (cleaning out the opening well, correct hole diameter, etc).
I would advise you to ask Hilti, Rawl, or whatever manufacturer you plan to use, what their research shows for anchor capacity subject to vibration. I would think they'd point you to epoxy anchors as opposed to wedge type anchors.
RE: drill-in wedge anchor design for vibrating tension loads
r.
RE: drill-in wedge anchor design for vibrating tension loads