Technical Resource Guide_WEB_BEL25-D-516650 - Page 44 of 84

44 | belgard ® product installation guide | belgard.com | 877-235-4273 Anchorplex ® System Construction Guide HOW TO USE THIS GUIDE Use this information to gain a general understanding of the basics of building retaining walls with the Anchorplex system. Do not use this in lieu of construction drawings provided by a qualified engineer. contact the Oldcastle ® APG customer care center at 1-877-295-5415 for more information about designing and building with the Anchorplex system. ABOUT THE ANCHORPLEX ® SYSTEM The Anchorplex system is a retaining wall built with Oldcastle ® products and self-compacting structural backfill, also known as “ no-fines” concrete, which is a highly-porous mixture of clean stone, cement and water. The mixing ratios (by weight) of aggregate to cementitious material should be between 6:1 and 7:1. The mixing rate (by weight) of water to cementitious material should be no more than 1:2. The resulting material, upon curing, should have at least 25 percent voids. RETAINING WALL CONSTRUCTION Setting out the wall and excavation is no different for an Anchorplex system construction than for conventional construction, except that the amount of excavation will probably differ. Construction of the leveling pad, base course, subsequent courses and drainage is no different for an Anchorplex system construction than for conventional construction. INSTALLATION OF STRUCTURAL BACKFILL After completion of the leveling pad, base course, drainpipe installation and stacking block 2 feet above grade, the first lift of structural backfill that meets Anchor Wall Systems’ specifications can be installed. Do not exceed 2 feet vertical stacking of block before placing a lift of structural backfill. The structural backfill can be placed directly from delivery vehicle or with skid-type loader or other equipment. It should be placed behind the blocks and worked into all voids and cores of the blocks (if applicable). When properly formulated, the structural backfill will not leak through the face of the wall. After installation of the first lift of structural backfill, install additional courses and repeat the process. Place additional lifts every 8 to 24 inches depending on site conditions and project scale. Subsequent pours can be made as soon as the structural backfill in the previous lift has set — usually within 2 to 3 hours. INSTALLATION OF FILTER FABRIC Place a layer of filter fabric over the structural backfill and up the back of the top course and the cap. Then fill behind the top course and cap with low-permeability soil. CAPPING & FINISHING Follow standard practice when capping the wall. Protect the wall with a finish grade at the top and bottom. Filter Fabric 1'8" Low-Permeability Soil Structural Backfill 2'0" (Typical) 4" Diameter Drainpipe .3 to .4 of H (Typical) Finished Grade 6" 6" 6" Rear-Lip Block H Leveling Pad U Start Base Block Base Material EXAMPLE: 6" MULTI-PEICE RETAINING WALL SYSTEM USING THE ANCHORPLEX SYSTEM Structural Backfill depth per design Ensure void areas between units are filled completely