PM: Storage Shed -- Roof

First build a jig for assembling the trusses.

Cut a sheet of plywood and a 2x4 to match the width of the shed and nail the 2x4 to the plywood flush with an edge. Measure 24" from each end and mark the 2x4.
To establish a 5" pitch, lay a framing square on the plywood and against the edge of the 2x4 at the 24" mark. Then, mark the plywood 10" above the 2x4.
Lay a straight 2x4 against the corner of the jig 2x4 and angle it to intersect the 10" mark. Butt a second 2x4 edge to edge against the angled 2x4 and nail the second piece to the plywood.
Repeat from the opposite end of the jig and mark the vertical centerline on the plywood and 2x4s.

7. Build roof-truss jig on a plywood platform, then nail and glue 1/2

8. Lay trusses between the walls and then tip up the end trusses. Center and toenail them to top plates.

Cut all the pieces for the first truss to fit the space on the jig. Use the first set as a pattern for the rest. Lay the members in place, and nail the joints together with gussets that are made of 1/2" plywood (fig. 7). Use 7d nails and construction adhesive on the gussets. Place gussets on both sides of each truss, except the two end trusses. Mark the wall top plates every 24". Lay the trusses upside down on the walls and then tip up the end trusses and align them with the top plates. Toenail these trusses in place (fig. 8).

Run a string between the rafter ends of the two end trusses and align the remaining trusses with this string. When all are toenailed to the walls, plumb the first truss and position the rest of the trusses to match.

To create an overhang on the ends, nail doubled 2x4 rafters to each end truss rafter (fig. 9). Then, rip 1/4" plywood to fit underneath the rafter ends to create a closed soffit. Finally, sheath the end walls as well as the roof and add the 1x6 fascia (as shown).

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