Situtation & Context
Plan to hand a bookcase on a barn door in front of this opening. It will open in front of a sliding door that has a vertical blind that sits ~4.25" from drywall face.
To do this I need to sister/build out a "beam" that is 14' long from wall to wall that can support the material and the bookcase.
questions at end
- remove drywall in front of headers (fireplace & slider)
- reinforce/fill in the fireplace headers with more supports
I need 5" to create enough overhang in front of the sliding doors blind
I will countersink 6" Grade 5 Lag Bolts &
Use strap iron or twist straps to attach the layers to ceiling joists (24" on center)
- I have 3/4" strap iron, I'm considering wrapping each of the layers if I can figure how to hold them tight to the ceiling.
- two 2x6 kiln-dried pine + 1.75 LVL engineered beam + then a TBD veneer (likely rough-cut 4x8x3/4 sheet of fir)
Additionally, instead, of lag bolts, I'll likely use full bolt & nuts w/ washers to the fireplace 2x10 header
- Number of lag bolts to go across the 14' expanse?
- I figured two every two feet with ~8" between them vertically.
- size of lag bolts? 6" grade 5, but... 1/4" or 3/8"
- examples of how to strap a beam tight to trusses in the ceiling?