Installation guide volume 24

WALLSTONES, COLUMNS AND STEPS

SPECIFIC INSTALLATION DETAILS APPALACHIAN WALLSTONES 6. Building 90° corners To achieve 90° angles, use the regular 350-mm (13¾-in.) modules and overlap them to set the angles firmly.

Regular 13 3/4 in. (350 mm) Appalachian Module

Column Module

7. Making convex curves To make convex curves with a radius of at least 2’ (600 mm), use the complete set of modules from which the back overhanging ends have been removed with a hammer and chisel. For curves with a radius less than 2’ (600 mm), use the 6 7/8 ” (175 mm) and/or 10 7/16 ” (265 mm) modules if need be, from which the overhanging ends have been removed in advance.

2’ (600 mm) radius

8. Backfilling After every two rows, fill the space behind the modules with 3/4 in (20 mm) clear stone. Protect the clear stone with a membrane from possible contamination by the retained soil. Repeat these steps up to the desired height.

Volume 24 BOLDUC Installation Guide - 41