Retaining walls made from boulders are inexpensive, functional, and attractive. Only a few materials are required to construct a retaining wall in a yard. This is a great alternative to building a fence for those who are on tight budgets. Sturdy boulders enable this type of wall to last for years, withstanding even the harshest weather.
You will need:
Step 1: Use the shovel to mark the location of the retaining wall on the ground. Do this for the front, sides, and back of the wall.
Step 2: At each corner, drive the stakes into the ground, using the hammer as necessary. If there is more than eight feet between corners, drive additional stakes into the ground so that there is no more than eight feet between each stake.
Step 3: Determine the wall height and tie the end of a piece of string onto a corner stake, placing the string at the desired height. Stretch and tie the string to each wooden stake until you have worked around the wall. In the process, use the string level to make sure the heights are constant and level.
Step 4: Dig an eight-inch trench with the shovel. This should cover the entire retaining wall base. Place about three inches of gravel evenly into this hole. Level the gravel with the rake.
Step 5: Starting along the front line of string, begin putting the boulders into the trench. Place the largest ones on the ground level and put them as close to each other as you can. Use gravel to backfill the spots behind the boulders, as this will hold them in place.
Step 6: Put the next largest row of boulders on top of the first row. Angle these to the back slightly in order to provide additional strength. Ensure that the second row sits atop the joints on the first row.
Step 7: Continue creating rows of boulders, working from the largest rocks to the smallest, until you have reach the desired height. Backfill the area behind this wall with the gravel.