ArtisticDecks-Bob said:Do you gentlemen know about bo-dark? Farmers have used those trees for fence posts for near on a 100 years and I bet they are still there and in good shape. A bo-dark tree makes a chain saw cry. Bob
I haven't seen anyone buy new railroad ties. I've seen people buy ones that had pulled up due to cracks (these will rot fast if not treated), and I've seen fake new ones.I often remove old railway ties sitting in dirt in people gardens. They are usually hollow and full of bugs.
All the creosote ones (cedar posts) are considered hazardous waste now. The crossties were also cedar that was incised and pressure treated. Roughly 3X5X8', they make pretty good fence posts after their electric service life for a couple decades or so. The creosote eventually leaches out, it isn't entirely fixed into the wood.I dunno, John. Phone poles are treated with creosote, and they last longer than any deck posts I'm aware of...
Telephone poles are or were soaked in creosote I believe and the bugs leave them pretty much alone......Railroad ties last because they are sitting on gravel. Creosote has no protection from rot or bugs..
I don't like the way concrete above grade looks for fence posts. Just my opinionI can still get .60 PCF treated 4x4s, but most are .4 or .20 now.
I don't have any 30 year old fences to base this on, but running the concrete above grade and sloping it seems to help a lot. More work to make it look nice.
I base my understanding on retaining walls I have torn out. The timbers were rotted and infested with termites. It's a given they were used ties.I dunno, John. Phone poles are treated with creosote, and they last longer than any deck posts I'm aware of...