How would I or anyone else know like me know the grade of PT lumber used after a long period of time in years?
You can say anything on that basis, as you know we don't have one in that regard. So, that's exactly what you're doing. We can only state our observations. That, I will continue to do without restraint or owing proof of some sort that you know we can't substantiate.
But, neither can you prove to me and the rest of the readers of the lifetime of your deck and supports and so forth. Nor do I question it, as there is no way you can prove that. Its too bad you don't see the difference in this perspective....
Navy 20 year + retiree here. The pier supports are visibly rotting at the time they're normally replaced in reference to what I said before. I won't comment on federal or state landlubber employees at this time except to say that you sure sound like one. God help us, my opinion based on observation of your replies.
Uhh, you used a weblink example where a bridge crossing wetlands has its PT supports in concrete to support your point. And, the concrete terminated right at soil level. Smells awfully like riding the fence here, my observation.
Concrete is porous, water leaks by and gets in the wood. The wood gets wet, etc. etc. etc. Doesn't matter if its PT or not. The organisms enter from the top of the concrete termination. That's where, PT fence posts for instance rot/degrade. Doesn't matter if the fence post or support are loose in the concrete or not, it will happen if near or below the soil line. Good digression attempt, but not valid.
I am not arguing. I am stating facts and my observations. I'm not making an emmotional issue as you previously impled by "arguing", reemphasized. Oh well, you just don't get it, and never will.