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human909's latest activity
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human909 replied to the thread Beam Reinforcement Calculation.But while it remains a symmetric member about the neutral axis there still is no longitudinal shear flow, even for "side channels or...
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human909 replied to the thread Beam Reinforcement Calculation.There lies the rub. There is negligible composite behaviour in this situation. And as a corollary to this; minimal shear flow (force...
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human909 replied to the thread Valid Pin Boundary Condition?.Well yeah and that is a problem. It is typically the most highly loaded areas in a portal fame. It would also be quite unconservative...
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The critical force effect in most frames like the OP's would be the moment at the top of the column, and a fixed base assumption just...
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human909 replied to the thread Valid Pin Boundary Condition?.Really? Surely that could readily be unconservative. The bolt positioning and the plate thickness doesn't lend itself to a high...
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human909 replied to the thread Valid Pin Boundary Condition?.Since @driftLimiter called me out. I'm going to go on a nit-picking, pedantic crusade. But most 'nominally' pinned connections also...
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human909 replied to the thread Valid Pin Boundary Condition?.You called? [tiphat] I'm not sure there is much to add, the above responses pretty much have it covered. Yeah this is typically...
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human909 replied to the thread Odd Vertical Bracing.Yes that is correct the eigen value is essentially the critical load factor, in fact this is where the concept of at least the initial...
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human909 replied to the thread Odd Vertical Bracing.And if you add that single framing member back into the analysis with a lateral restraint you get the previous 'Mode 2' becoming the...
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human909 replied to the thread Odd Vertical Bracing.And here are the buckling modes modelled. Note the single framing member has been removed for for this modelling. Load is 210kN from a...
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human909 replied to the thread Odd Vertical Bracing.Ok.... So I though I'd do post some pretty pictures based on a real work example. Here is the example: Circled yellow is the...
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human909 replied to the thread Odd Vertical Bracing.Thanks for the elaboration CDLD. I agree that for most beams mode 2 would be more critical though I can imagine a torsion ally strong...
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While, I agree that this mode isn't directly accounted for in codes, I feel that it is fundamentally the same sort of check as mode 1...
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human909 replied to the thread Odd Vertical Bracing.I concur too. As we all know even concentric loads become unstable, afterall that is what buckling is about both axial and LTB. I'll...
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human909 replied to the thread Insurance Limits.I'm in a different market to you but surely the premium increase from $2mil to $3mil isn't that big? Have you tried shopping around...
