Installing Fences on a Grade
Fences on sloped land are typically installed using one of two
methods: raking or stepping. In a raked fence, each section of fence is
sloped so that the pickets are not square with the rails; the rails
remain parallel with the ground, and the tops of the pickets follow the
slope. Another alternative for a slope is to step the fence. In a
stepped fence, the rails remain level, but each section starts at
ground level so that the top of the fence looks like stair steps. One
drawback is that a stepped fence leaves an increasing gap under each
section on the downhill end. Depending on the size of the gap, a
stepped fence may not keep pets in the yard.