Plan your retaining wall project. There is much to consider before beginning construction of an Allan Block retaining wall. This mortarless system requires no concrete, grout, or pins to hold it together. This video takes you step-by-step through these job site considerations. Some of the topics include: lot lines, utilities, building permits, soil types, cut vs. fill, site plan, water management and drainage, and site access. You can find many more videos, photos, literature, estimating ...