Correct poundage, depth of burial, and the correct explosive maximizes the heaving effect. Multiple explosions for barrier creation. Actual Charge Hole Creation. It isn t easy to work on a 35-degree or greater slope. Again, take a look at your site.
Some highways have flat bench cuts every few feet up the slope for stability.
Drive your augering equipment out on this flat bench and auger to the correct depth. If you do not have augering equipment or cannot get such equipment on site, then use shaped charges to create your preliminary charge holes. Use 10 pounds of ANFO per foot of earth from the surface. Find a location on your hillside or another location with similar soil type and slope angle and perform a few test shots. Start with 10 pounds of explosive per foot.