Assembly Instructions
3E-Z Build Shed Building Guide 10'×10' ∙ 10'×12' ∙ 10'×14' ∙ 10'×16' ∙ 10'×20'
STEP 7. DOOR FRAMING
STEP 8. RAISING FRAMES
STEP 9. SQUARE THE BUILDING
STEP 10. FLOOR SUPPORTS
Figure 7
Figure 8
Figure 9
Use the door cutouts from the front wall framing
for the doors. Cut 1×4 boards and attach to the
door siding interior leaving the siding extending 1"
out top & sides. On one door extend a 1×4 board
out 1" for the center of one door; the other door in
1". Ensure bottom boards clear treated end frame
joist. Bend protruding 8d nails. Cut and fasten 2×4
cross braces. Cut 1×4 boards and attach ush to
door siding exterior. Apply hinges and hasp. See
Figure 7. Attach 1×4 trim to the front wall frame
and fasten doors on top of the trim.
From treated 2×4s, cut rim joists:
• 119" for a 10' building • 143" for a 12' building
• 167" for a 14' building • 191" for a 16' building
• 239" for a 20' building
Place rim joists 10' apart at the shed location.
Stand the front and back walls up at either end of
the rim joists. Plumb and temporarily brace. Nail
rim joists to the end walls using 10d nails. Place a
temporary brace across the roof frame members.
Stand up the remaining frames. Nail rim joists to
frames at the dimensions shown in Figure 8.
At base of building, measure
diagonally. Adjust building until
AD=CB. Building is then
squared. See right.
Figure 9. Cut (4) 21¼" oor supports and 22½"
oor supports from treated 2×4s (Use 10d nails):
• 6 for a 10' building • 8 for a 12' building
• 10 for a 14' building • 12 for a 16' building
• 16 for a 20' building
Temporary braces
Standard
Frames
12' Building Shown
21¼"
22½"
22½"
143"
22½" 22½" 22½" 22½" 21¼"
1½"
Toe nail in place
2×4 treated oor
supports.(typical)
1×4×6" gusset
plates at top and
bottom fold
locations (typical)
21¼"
22½"
22½"
1½"
Outside
edge of
frame to
outside edge
of frame
2×4
Brace
Treated end frame Joist
1"
1" Gap, Top & Sides
1×4
Pine
Boards
Hinge
locations
12"
12"
82½"
Front end wall shown with
optional T1-11 siding
A
C
B
D
45¾"
41½"
21¾"
21¼"
10'0"
10' × 12' Floor plan shown
Siding
2×4
Headers
Extra
2×12
Header
2×4 End
Frame
Rollup Door
Rollup
Door






