Im planning to build a small shed in my farm using Survey tree timber / Nilgiri trees timber as pillars. I understand that the lifetime of such a pillar - if totally unprotected - is about 2 to 3 years due to termite damage. To enhance the lifetime, I am planning to surround the based of the pillar in concrete and make sure that soil / moisture / rain doesnt touch the tree/pillar. Since many people advice me against going in for survey pole, Another idea I had was to have stone pillars about 10 feet tall. But Im not sure if it will bear the weight of the roof and will crack .
Does anyone have any experience in such a structure ? is it a good idea to do this or I have to go in for metal poles ?
Can anyone suggest any other way to have pillars ? I want to have it eco friendly and aesthetic looking.