Technical Resource Guide_WEB_BEL25-D-516650 - Page 46 of 84

46 | belgard ® product installation guide | belgard.com | 877-235-4273 COLUMN CONSTRUCTION Course A Course B 6" Minimum compacted granular-base Leveling Pad 3'0" 6" STEPPING UP THE BASE AT LOWEST POINT Walls built on a sloping grade require a stepped base. Begin excavation at the lowest point and dig a level trench into the slope until it is deep enough to accommodate the base material and height of one entire block. STEP-UP At this point, step up the height of one block and begin a new section of base trench. Continue to step up as needed to top of slope. Always bury at least one full unit at each step. 6" Minimum compacted granular base Leveling Pad Native Soil U Start Base Block 6" Stager Corner/Column Units to maintain bond