I am definitely a novice, and that is an understatement. I'm going to put up an obstacle course for my 8 and 10 year olds soon. Essentially a zip line, but with various grips and ropes supported between two posts (see pic). The instructions for this thing reference mounting between trees, but we don't have any decent trees, so for me must be posts. The only thing it notes for a post is that they must "support 2,500 lbs at each end".
I've looked at a 6x6x12 Cedar, a 6x6x12 treated #2 fir, and a 4x6x12 #2 treated pine. The pine is roughly have the cost of the other two of course. Each one will be buried 4' deep and concrete poured into hole to support.
I know the 6x6x12 will work, but would I be good with a 4x6x12 for something like this as well?
I've looked at a 6x6x12 Cedar, a 6x6x12 treated #2 fir, and a 4x6x12 #2 treated pine. The pine is roughly have the cost of the other two of course. Each one will be buried 4' deep and concrete poured into hole to support.
I know the 6x6x12 will work, but would I be good with a 4x6x12 for something like this as well?
