In this example we are using bark stripped locust logs for the trail edge, for rockfall prevention, for rock retention, and as an upright sunken post for support. All of the timbers are cut to measure from the adjacent forest.
I found this to be an interesting example of log cabin cribbing. One log rests against the tree, a second log against the first log and then onto a third log to bridge the gap between the next secure prop.
Sometimes stone fillers are used to lock the cribbing logs in place against a standing tree.
On occasion we built safety barriers when there was sufficient dirt for trail tread. The purpose of these barriers is to stop any rockfall before it drops onto the parkway.
This is a good example of a below the trail roll barrier.
A good long straight stretch of sturdy locust timber creates an excellent and long lasting trail edge cribbing.
Flat stones lay on the down side to aid in stabilizing the soil as seen through this fallen oak timber.
Sometimes we built timber cribs to hold rocks that were excavated from the trail. The crib is for safety purposes and will hold the stones until they settle into the earth.
On less severe slopes, simply laying stones with cut brush debris is used below the trail cut.
I love the engineering of this solution. There was no upright tree to prop against and we needed a safety crib. So the span was connected to an standing tree on both ends at a diagonal. A stone placed below the angles to lock it in place and then the diagonal bridged with hypotenuse. This provided a continuous and stable safety crib.
In the next post enjoy seeing the process of gathering trail timbers!
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