On 2008-06-13, JohnnyC wrote:

The floor of a 12x16 shed is PT 2x6 on top of a PT 2x8 mudsill. The bottom
of the floor frame varies from 6" to 12" above the ground due to a ground
slope. The mudsill is on solid concrete blocks. The decking is 3/4 ACX.

Use PT decking.

Wayne