If there are three things every builder should understand about SRWs, they are reinforcement, compaction and drainage. Georgrid soil reinforcement is the re-bar of SRWs. Many building codes require permitting for walls taller than 4 feet, which typically results in a design submittal of some form. Furthermore, depending on the size and weight of the SRW unit, geogrid soil reinforcement might be necessary to ensure stability of the entire structure.