Technical Resource Guide_WEB_BEL25-D-516650 - Page 53 of 84

53 | belgard ® product installation guide | belgard.com | 877-235-4273 Diagram 4 - Base Course Diagram 5 - Core Fill Diagram 6 - Reinforcement CONSTRUCTION OF THE NEXT COURSE • Place 12 inches (minimum) of drainage aggregate between, and directly behind the wall units. Fill voids in wall units with free drainage aggregate. Place backfill soil and compact. Only lightweight hand operated compaction equipment is allowed within 3 feet from the back of the wall. See Diagram 5. • Remove excess fill from top of units before placement of the next course. • Place the next course of block over the locator lugs using the alignment cores. Align locator lugs into the core of unit. Pull each block forward as far as possible to engage the locator lugs. Maintain running bond with row below. • On curves, use partial unites to stay on bond. A circular saw with a masonry blade is recommended for cutting partial units. Use safety glasses and other protective equipment when cutting. DRAINAGE DESIGN (PER DESIGN) • Each project is unique. The grades on the site will determine at what level to install the drainpipe. Place the drainpipe (4-inch perforated piping) so water drains down and away from the wall into a storm drain, or daylight just above grade. • Fill in the area behind the blocks with clean drainage aggregate, at least 1 foot from the wall. You may need to place and backfill several courses to achieve the proper drainage level. • The outlet pipes should be space not more than every 50 feet and at low points of the wall. In order for the drainage aggregate to function properly, it must keep clear of regular soil fill. REINFORCED BACKFILL PLACEMENT AND COMPACTION (PER PLAN) • Place reinforced backfill in 6 to 8 inch loose lifts and compact to the densities specified on the approved wall construction plans. • Only hand operated compaction equipment is allowed within 3 feet from the back of the wall. • If the compaction equipment is too small to achieve the required compaction, thinner lifts should be used. • Install each subsequent course in a similar manner. Repeat procedure to the extent of wall height. REINFORCEMENT PLACEMENT (PER PLAN) • Refer to the approved wall construction plans for the reinforcement type, strength, and placement location. Measure and cut the reinforcement to the lengths shown on the plans. • Ensure the reinforced backfill is placed and compacted flush with the top of the units and is graded reasonably flat prior to reinforcement placement. Clean any debris off the top layer of blocs prior to reinforcement placement. • The reinforcement has a primary strength direction, which must be laid perpendicular to the wall face. • Place the reinforcement within 1 inch of the front of the units. See Diagram 6. • Place the next course of units. Pull the reinforcement hand taut and place staples, stakes, or fill at the back of the reinforcement to maintain reinforcement tension during placement of drainage aggregate and reinforced backfill. • Place a minimum of 6 inches of reinforced backfill prior to operating equipment above the reinforcement, Avoid sudden braking or turning on fill placed over reinforcement. FOR MORE INFO VISIT Belgard.com/Diamond-Pro-Air