STEP 15: Attach Roof Border 2 and 3 (parts I2,I3) to the long edge of the roof.
Attach Roof Border 1 (part I) to the short edge of the roof.
Attach the Center Rib Braces (part K3) as shown in the diagram.
Attach the Corner Rib Braces (part K2) as shown in the diagram.
STEP 16: Attach Roof Plate Border 1 (part I5) to the long edge of the roof, and Roof Plate Border 2 (part I6) to the short
edge of the roof as shown in the diagram.
K2× 4
K3× 4
