For photos see www.shastagrs.org. then click on Mike and Fran Evans under members’ layouts
I use 1 x 6 x 6 ft. dog eared redwood fence planks which cost about $2.00 each from Home Depot
I then nail 1" wide redwood lath to each edge of the plank and saw off the dog eared end flush.
Planks are joined end to end with a short 12" piece of the same redwood plank material and deck screws
Curves are cut from 1 x 8 x 6 ft and edged similarly along the inside and outside arc.
I then use concrete bricks or pavers under each splice board or increase the height/grade using more pavers, and conc. blocks. Use a 1/2" thick block taped to the end of a 2 ft spirit level to establish a constant 2% maximum grade.
Mike Evans