What is the primary purpose of the 2x8 boards attached to the sides of the I-beam joists used as rafters?
a. They provide exposed tails for the roof overhang.
b. They improve compressive strength above the exterior load-bearing wall.
c. They provide improved nailing connections for anti-rotation blocking.
d. They provide the extra strength needed to support a roof overhang greater than 4 feet.
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