I have a project that involves providing security fencing around a site that has areas of relatively steep grade. Is there any criteria on the allowable grades adjacent to the fence line?
IF the slope is susceptible to movement, I would suggest keeping the fence well beyond the top of the sheer plane, as determined by a geotechnical engineer. This will not only provide a due diligence arguement to the owner but also define the "escarpment boundary" in case of developments wishing to encroach.