We are looking at ways to stabilize the slope, but the client has asked about posting weight limits for the road to avoid having heavily loaded semi's crossing. This access road is not open to the public and sees occasional heavily loaded semi trucks and more frequent pickup / tool trucks.
No drilling or analysis has been done yet, but the slope is moving, so the FS is <=1. If you add more weight to the top, this will decrease, but obviously not guarantee there will be movement.
So, would / could you assign a weight limit to this situation? I could see doing it if an analysis had indicated a marginally stable condition (no movement, acceptable FS up to a certain load).
Second question: Would you consider a FS <1.5 for this slope? There is nothing below. The access road is the only piece of infrastructure affected by this current slide.