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On the stair opening test, the near truss is missing plates connecting the webs to the top chord. There is no rule requiring the opening to be framed with double ply trusses. The spain to the girder truss at the head of the stair might be short enough to only need the one ply girder. The stringers should be attached with hangers or into solid web members, but neither is shown. I could only count ten risers and for an indoor space I do not think your going to get a full story of headroom below the bottom of the trusses. The hangers are a odd single strap configuration with no bucket. Since I am being picky the metal gusset plates should have holes indicating there are teeth. Fun game.
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