Overlapping the trees ensures that no gaps are left in which erosion can occur. It also reduces anchoring costs by allowing each anchor to hold both the butt of one tree and the top of the next. It is usually necessary to pull trees tightly against the bank before anchoring them in place. This can be done by attaching a chain or cable to the trees and pulling them against the bank with a truck or tractor. Building a Tree Revetment 1.
First tree is moved into place on bank.
Arrow shows direction of current. Tree is pulled into stream. A tractor with a front-end loader can also be used to drop trees into place 3. Tree is pulled tightly against bank and anchored at points shown by arrows 4. Next tree is pulled into place and the process is repeated.