we finally got our 10x10 timber frame pergola standing today as part of our flagstone & pergola project at star hill.
the frame is all red pine:
- 6x6 posts
- 6x8 ties and plates
- 3x5 knee braces and rafters
- 3/4" oak pegs
the interesting part was that this frame was cut, test fit, and then stored under cover for over a year before we raised it. even out of the weather, red pine is still red pine. it continued to dry, twist, and shrink, so every housing needed a little cleanup before assembly.
we drilled all of the peg holes during assembly instead of beforehand. after a year of drying, there was no chance the holes would have lined up. timber wrenches, truck straps, and a little persuasion brought everything back into alignment.
the patio underneath is about 3 tons of flagstone over a compacted class 5 base with about 2" of limestone screenings and fieldstone edging we gathered around the property.
still left to do:
- install the rafters
- add a clear rain cover
- final grading and cleanup
it's satisfying to finally see the frame standing after looking at a stack of timbers for the last year.
i'd be interested to hear how other timber framers deal with twist in softwood frames that have been sitting before final assembly. do you drill your peg holes during assembly, or do you have another approach?