- 1). Lay out the first row of landscape timbers in the shape that you want them. Butt the edges of the timbers up as close to each other as possible.
- 2). Insert a 3/8-inch drill bit into a drill and create a pilot hole 1 to 2 inches from the end of a timber. Create additional holes spaced at 4-foot intervals along the length of the timber.
- 3). Insert a landscaping nail, or long iron spike, into each hole and hammer it in with a sledgehammer until it is flush with the surface of the landscape timber.
- 4). Lay the second and third rows of landscape timbers on top of the first row in the same manner that you used to lay the first.
- 5). Drill new pilot holes in the top end of each uppermost landscape timber and again hammer nails or spikes into each hole. Position the holes approximately 1 inch to the left or right of where the underlying timber hole was drilled. This allows the bottom of the spike to penetrate the underlying timber wood instead of colliding with the underlying spike.
- 6). Continue installing and fastening the timbers in this manner until you reach the desired height. Install nails every two layers.
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