In a previous post James wrote...
I am going to be building a woodshed next month. The primary stucture will
be pressure treated 4 X 6's, and the exterior will be covered with rough
sawn cedar. This woodshed will be built on skids, so that I could move it
a bit in the future if needed.


James:

Here's some stuff from my standard structural notes:

Members in contact with concrete or ground (mud sill) shall be pressure
treated per AWPA C2 with a water-born treatment to a minimum retention of
0.40 pcf.

Pressure Treatment - AWPA Treatment C2, for fresh water use, ACQ, ACZA or
ACA, minimum retention = 0.60 lb/cu. ft.

--- Comment: If you can find it go for the heavier treatment

Above ground members exposed to weather (deck) shall be pressure treated
per AWPA C2 to a retention of 0.25 pcf. Embedded poles shall be pressure
treated per AWPA C23 for round poles to a retention of 0.60 pcf and AWPA
C24 for sawn poles to a retention of 0.80 pcf. Cuts and Holes in all
pressure treated members shall be treated after fabrication with 2% Copper
Napthenate in accordance with AWPA M4.

Connectors and fasteners for pressure treated wood shall be hot-dipped
galvanized or stainless steel in accordance with IBC Section 2304.9.5.

Hope that helps!

--
Bob Morrison, PE, SE
R L Morrison Engineering Co
Structural & Civil Engineering
Poulsbo WA
bob at rlmorrisonengr dot com