I came across this weird configuration of a floor joist. I’ve never seen anything like this. The actual joist is 2x12. Theres a 2x6 nailed to the bottom, like an I-beam, and then along the sides of the joist there are 2x4s, one at the top, and one at the bottom. I’ve never seen anything like this. Has anyone else seen it? I’m not sure how to call it out.
There are two metal columns in the basement about two feet apart. From the front wall to a joist the span is 18ft. From the other column to the back wall the span is 16 ft. Any insight would be appreciated.
Same here floor vibration or bounce. Adding additional lumber changes the stiffness of the floor joist. Typically bouncy floors are associated with long span joists, especially engineered I-Joists. Bouncy floors may be acceptable for as load carrying or structural capacity, but fail serviceability requirements for deflection and vibration.
I never seen anything like that either. I’d be looking for any documentation or drawings that came from an Architect or engineer.
Not a standard type of floor framing I’ve ever seen.
Have seen something similar a couple of times. One was a homeowner who built a stone fireplace above. The other had a thousand gallon salt water aquarium. And yes, sometimes an attempt to “fix” a “bounce-house” loose floor. Wonder what was above the pictured area?
Hey everyone, thanks for the feedback. The area above was the master suite. They had a jetted tub, but nothing out of the ordinary that would have added any weight. I’ve seen similar setups without the need for additional bracing.
