Who rattled your cage?? Depends what forces you are designing force, glad you are not my structural engineer, stick to mixing concrete (that would be 1-2-4 FYI)
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What is this joist doing?
- Thread starter senzubeansoup
- Start date
And this man is an expert so take note
Oh ok. Longer than my knob, but shorter than your post.
Do you know what torsion is? Have you ever loaded floor joists, prior to the floor and ceiling material being added?
Well I though it was analogous to twisting a bit like torsional resistance in I beams but I am more than happy to listen to your explanation of it as I like to think every day is a school day
No, Why?
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You can watch the joists begin to rotate as the buckle with mid-span point loads above. Only if you haven't installed mid-span blocking that is.
Yes, that's the dancer. Now you know how to help prevent it in longer span joists.
Can't understand where you are coming from Noseall as we are in agreement on the requirement for struts/noggins as per TRADA spec. The only issue is whether you go above and beyond these requirements which, as I stated earlier, your original posting seemed to infer. To that end I was half expecting one of your informative site photos (which are better than a thousand words) showing a flooring layout looking like a dozen ladders had been laid side by side with rungs at 1/4 or less knob spacing. But back to the OP, without the actual joist dims we are speculating in the dark as to the actual reason/resolution of the perceived bounceYou can watch the joists begin to rotate as the buckle with mid-span point loads above. Only if you haven't installed mid-span blocking that is.
Ivor please don't get involved
And another thread vanishes down the plughole of boring interpersonal willy waggling.
I'll say what the heck I like. You're telling me to shut up just because I've pointed out you're spouting nonsense. You seem to think that adding a load of strengthening to a structure won't make it stronger. Forces don't care what regulation whatever say about what you should do, if you add rigidity it becomes more erm... rigid!
Back on-topic.... find out whether the joist is supported. If it isn't then rip it out. If it is supported then think some more, but this is unlikely.
Are we forgetting that there's a layer of lath & plaster between the beam and the joists?!?
I'll say what the heck I like. You're telling me to shut up just because I've pointed out you're spouting nonsense. You seem to think that adding a load of strengthening to a structure won't make it stronger. Forces don't care what regulation whatever say about what you should do, if you add rigidity it becomes more erm... rigid!
Back on-topic.... find out whether the joist is supported. If it isn't then rip it out. If it is supported then think some more, but this is unlikely.
Are we forgetting that there's a layer of lath & plaster between the beam and the joists?!?
Willy waggling thats a new one for me, its so quaint sounding, something we would say in the infants schoolyard perhaps?
Not telling you to shut up Willy just asking you to not get involved in spheres outside your understanding of structures that may contain superfluous elements (that does not include those as specified by TRADA)
Hilarious. Has the OP asked about TRADA regulations? No, he's got a lump of wood sticking out of his ceiling and was wondering what the heck to do about it.
Didn't ask about bounce either but you know how things can go off at a tangent in these discussions, non existing leaks were mentioned in comment 10 but didn't like to mention it cos the writer was trying his best to be helpful bless , good to see you remaining focussed on the actual issue in question and not getting side tracked. As for the lump of wood I think in all reasonableness that had been sorted by the time we got to comment 7
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and yet you have just made post #41
lighten up - threads going off at a tangent is sometimes when they are at there best
Which backs up my tangent comment, thankyou
Couldn't agree more, leads to healthy discussions and learning
That's Post 43
Several posts ago you were questioning them and even referring to solid bridging as a 'phenomenon'. Seems to me like you were being a bit of a know it all and now you are back-peddling.
A bit silly really in context of the thread.
One row of solid bridging centrally placed does little to spread the load, keep putting those floorboards down.
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