We constructed this modular 12' x 16' shed off-site at our workshop in 8 modules, then transported it to the job site. Because the modules fit precisely, erecting the walls took less than half a day. Before the siding and trusses can be installed, some work still needs to be done. In the right foreground of this photo, you can see the first piece of the top plate has been installed.
The sub-floor is elevated above the soil. Heavy duty ground cloth is followed by 3" of gravel. On the "low" side, two courses of 1" blocks. Then 4" x 6" pressure treated. Followed by 2" x 6" with two coats of Zinnser primer (or bones paint). For a total of 16" to 17" of separation between the soil and the floor. The underside of the floor is also treated.
That's me, at the end of a day's work. The sun came out, but temps were chilly. My client did a great job of leveling the blocks for the pressure treated 4 x 6's. Pressure treated tends to warp a bit. I make sure the bow (if any) faces up. The plywood will be glued to the joists. Other surfaces will be primed before the plywood floor is installed.
I'm stoked to receive my deck of Humandalas Cards from Daniel Levy. "Make sacred geometry with your bodies! Create mandala patterns with connected hands, movement and visualization. Use this 52 hex-card deck to guide your group in a healing and transformational activity." http://www.humandalas.com/
The 12' back wall is constructed in two modules, an 8' module and a 4' module. I decided not to use two 6'-wide modules. Although 6'-wide modules are easier to handle than 8' modules, modules of 8' & 4' make more efficient use of the materials.
The 8'-wide module hangs off the edge of the jig.
Window: 36" x 12". Jeld-Wen brand shown. Availability varies, I may substitute comparable quality and size. Brand and vendor at my choice.
White vinyl, double glazed, argon. Translucent glass on this size window. Includes screen.
This shape window is generally placed high, it's sometimes used as a basement (or bathroom) window. From the top of the (7' 9") wall to the top of window measures approximately 10". This puts the bottom of the window at approximately 5' 11".
Cascade Windows are manufactured in Portland, Oregon. http://cascadewindows.com/
The third module is complete. The left and right side walls measure 15' 9". The side walls each consist of two modules. The first module measures 8' long, the second module measures 7' 9". The second module is designed so that the 16" on-center spacing of the studs continues. The siding panels have vertical grooves every 8", these grooves match the studs for nailing. In the right foreground you can see that the end of the wall has a "California corner" to strengthen the corner and to anticipate drywall.
Building to the measurement of 15' 9" is very cost-efficient. By cutting 3" off of multiples of 4' (8, 12, 16), very little waste is created. Only a couple inches is cut off each board. 8' lengths of trim are sufficient.
Six sheets of plywood will be enough for the floor of this 12' x 16' shed.
The plywood is marked with instructions to leave a 1/8" gap all around for expansion.
I treat the under side of the flooring with a "mis-tint" paint or stain. Most paint shops have a few cans around that are deeply discounted. My paint shop calls them "bone paint." Perhaps it's because of the bonehead who mixed the wrong color. More likely, because no one cares what color you paint the "bones," you can use any color; people only care about the color of the "skin."