Can anyone tell me what’s happening here in the attic?
Are you sure this in the attic? Looks like floor structure to me.
If it is floor, the builder forgot to come back and nail those cross braces which help keep the joists from rotating.
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This is the crawl space my mistake
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It’s also a crawl space on a slab
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When the builder nails the bottom of the x bracing it ties the whole floor together making it much stronger. However when they forget to nail off the bottom it does no good at all.
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Okay, a little back ground info on these braces. Many builders wait until the flooring material (such as hardwood) is laid and nailed before they nail in the cross braces. The cross braces if nailed in advance may cause some buckling etc. They need to the floor to flex a bit before nailing the braces, sometimes they will wait several days or a week. In this case, they forgot to come back and do it.
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(Bridging) 
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I think bridging is more accurate. But, until they are nailed, they are braces! LOL
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^^This Exactly! I routinely find this on 100+ year old houses and can only conclude that the builder (or “craftsman” as he was called in 1920) got his check and never came back. On some level I suppose it’s comforting to know that builders were dirt bags 100+ years ago too.
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Morning, Ahmadd. Hope this post finds you well.?
The left arrow indicates that floor joist shifted by the split wedge.
The right arrow indicates the bridging was not completed.
Personally, I am use to running across bridging in planked sub flooring.
Write up what you see.
Observation: Structure. Flooring. Wood joists.
A: Loose detached bridging. Various locations.
B: Floor joist damage. Minimal.
Recommend a licensed carpentry or general contractor Bridge, Block or Strap loose floor joists to prevent joist rotation and damage.
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No, once again you are WRONG!
The Left arrow is exactly the same situation as the Right arrow.
You need to get your ‘perspective’ in order before replying to posts!
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You are a complete idiot. You should be permanently banned from the message board.
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And sometimes, the cross braces no longer fit between the joists after they have adjusted them to fit the 4X8 sheathing. (They nail the tops before laying the sheathing down because it is easier.)
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The cross bridging shown was not nailed on the bottom edges. No split wedge, just perspective.
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The sheathing is applied after the framing. The framing is not adjusted to the sheathing.
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Looks like the wood joist is split to me.
That shadow is proof.
Likely when the wood floor joist rotated, an uncentered fastener on the inside edge of the wood floor joist facilitated in splitting a small wedge section you captured in your image.
Blocking or strapping would save time. Personally, I mostly see bridging used on old planked sub floors.
Looks to me like camera flash shadow. What are you seeing more specifically?
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He is not comprehending the photo. It is obviously a brace hanging down captured in the photo at an awkward angle.
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I don’t see that Robert. Don’t over think it. It is just bridging that never got nailed.
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