Deck Superstore Rough-Sawn Pergola System Installation Manual - Page 4
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Inner Beam
4
Inner Beams sit in the notch at the top of the 6x6 posts, and should be flush to the ends
of the posts. Attach with two 5" screws at each post. Pre-drilling is not necessary for all
of the 5" screws unless going through a knot.
5" Construction Screw
x2 per post
Mark your rafter spacing on top of the inner beam, before placing your inner beam.
OC Spacing
Rafter spacing (in inches) = (length of Inner Beam - 3") ÷ ( # of Rafters - 1)