Can anyone help me with problem related to backfilling a road. Road backfill requires length = 100m, width=15m and height 6.5m. I have done fill upto 3m height using Bajri from river bank. It is not working backfill area shakes during impact. It is already unstable so if I continue the process till whole 6.5m height. I doubt backfill wouldn't be strong enough to carry the weight of the road. If anyone can help me with the solution to made the backfill area stable. I will be really thankful.