4x6 would be better, with the 6s in line with the load and poles set at 60* opposite angles. There is no need for concrete if you spend good time tamping the backfill.
Be sure to avoid...
Type: Posts; User: MDSH
4x6 would be better, with the 6s in line with the load and poles set at 60* opposite angles. There is no need for concrete if you spend good time tamping the backfill.
Be sure to avoid...