Mininum dimension at end of tapered cantilver beam
Mininum dimension at end of tapered cantilver beam
(OP)
As per attached sketch, what should be the minimum dimension at the end of tapered cantilver beam. Normally it should be half of that at support. If beam depth is more than required, is there any codal requirement for minimum depth at end of cantilver.






RE: Mininum dimension at end of tapered cantilver beam
which is more than the required dimensions, satisfying the short and long term deflections. Lookinf for minimum 26"X? at end. Architect requires 16".
RE: Mininum dimension at end of tapered cantilver beam
RE: Mininum dimension at end of tapered cantilver beam
RE: Mininum dimension at end of tapered cantilver beam
You want also want to look at the slope of the moment diagram....theoretically this could also be the slope of your taper.
I would also recommend checking the load case where wind provides uplift and there is a seismic load. For the wind case, I would verify a deflection criteria. Also be careful if you are in a region of snow.
More than likely, I believe you are going to be deflection controlled, so your minimum section at the end will need to be sized for deflection not strength.
I would also recommend providing a cantilever coming from the other edge to meet at the corner. This will provide redundancy and I believe will be aesthetically pleasing (two tapers joining at the corner)
The diagonal beams coming to the corner is going to be a difficult connection. You may want to offset one of them to connect into an adjacent beam rather thna at the column (check AISC bolting / wrench requirements). That, or reframe, by providing only one diagonal. Check Deck span requirements.
RE: Mininum dimension at end of tapered cantilver beam
i presume you're also putting an edge member along the other sides, ie surrounding the dark grey area, ?
RE: Mininum dimension at end of tapered cantilver beam
BA
RE: Mininum dimension at end of tapered cantilver beam
I am thinking to convince architect for a minimum of 24" at end, just for placing rebars easily.
Looking for any design literature to check slab thickness for triangular shape slabs. I am using BS code, it gives me moment formula, but not how to check thickness of slab, like l/33 or l/?.
Any material for special shapes to estimate slab thickness is appreciated.
RE: Mininum dimension at end of tapered cantilver beam