Rogers' Hardscape Pros
Water Applications
WATER APPLICATIONS
BASE COURSE
Place a filter fabric with extra length in front of the wall. Install leveling pad and the base course of block, including drain tile and drainage aggregate. Wrap the extended filter fabric up along the face of the base course. Place soil fill in front of the wall and compact. Install another section of filter fabric in front of the wall to protect against erosion. Cover the fabric with a minimum of 3 inches of sand. Install larger stones such as riprap to hold it in place.
NEXT COURSE
Continue constructing the wall. Drainage is vital. To prevent clogging of the drainage aggregate and drain tile by fine-grained soils, a geosynthetic filter fabric is installed to separate the drainage aggregate from the reinforced soils.
ADDITIONAL COURSES
Repeat the steps used to build the previous course until the wall is complete. The last section of filter fabric should cover the drainage aggregate and run up against the back of the top course of block. Add fill soil and compact. Numerous issues, including wave or ice impact, erosion or scour in front of the wall and ice uplift of the wall, must be considered in the use of water applications of segmental retaining walls. For more information, consult with a qualified engineer.
