I’m building a set of outdoor stairs down a 14 foot drop over 60 feet. I’m going to use 6x6 as the front edge treads and then backfill.
This means the wood will be in contact with the ground. I am aware this will limit its lifetime. My question is whether PT will last significantly longer in this situation than hemlock?
The local sawmill has rough 6x6 hemlock for 550/1000 vs about 20 for a PT 8’. Unless the PT lasts way longer the 40% difference seems worth it?
Any other suggestions on outdoor stairs?