Reply by bilyo

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696 posts in 1495 days

#1 posted 01-27-2018 03:46 PM

I m a little concerned because the landing slabs are “captured” on all 4 sides by steel – and the landing sits down flush into the structure. If I glue in place, I can t get clamps on it.
- bassman2

Walker suggests using wedges to squeeze the joint together until dry. Good idea.
I would be even more concerned about the slab being “captured” on all 4 sides. This would allow no room for expansion. If the slab expands there will be trouble somewhere. If the steel doesn’t give, the slab will likely buckle. With a slab that size, there is the possibility for a lot of movement. You should make sure that your wood to steel fasteners allow for adequate wood movement in both expansion and contraction. You can find tables on the web providing amounts of expansion/contraction to expect based on wood species.

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