limitation of the concrete beam width
limitation of the concrete beam width
(OP)
Dear all
is there any limitation in the codes regarding the concrete beam width (minimum or maximum limitation)?
is there any limitation in the codes regarding the concrete beam width (minimum or maximum limitation)?





RE: limitation of the concrete beam width
It is normally related to the depth as well. If the width to depth ratio is too high, then the beam is too wide to transfer the loads in it to the supports via shear. There ends up being secondary flexural action in the transverse direction at the support.
RE: limitation of the concrete beam width
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: limitation of the concrete beam width
RE: limitation of the concrete beam width
So this in effect limits the beam width based on span and lateral bracing.
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RE: limitation of the concrete beam width
but the sentence "which is the least width of the compression flange/face of the beam" not clear for me , would you please to give me more clarification.
RE: limitation of the concrete beam width
Your question is what they mean by "least width of the compression flange/face of beam". That is the width of the beam on its compression face (usually top face for a simple span gravity beam).
So if your beam is 12 inches wide and 24 inches deep, the maximum span is 12 x 50 = 600 inches = 50 ft.
If the beam varies in width - say the ends are tapered wider - then the "least width" is the one you use for the maximum span.
So using the L(max) = 50b criteria, ACI is essentially making a minimum width requirement (b(min) = L/50)
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RE: limitation of the concrete beam width
RE: limitation of the concrete beam width
so now only cases will be critical and governed by the equation cantilever beams and inverted simple or continues otherwise the compression width is very long because the b will be the width of flange.
RE: limitation of the concrete beam width
Check out Eng-Tips Forum's Policies here:
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RE: limitation of the concrete beam width
RE: limitation of the concrete beam width
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: limitation of the concrete beam width
my rule of thumb , width never less than 200mm (8 inches) for ease of construction placing reinforcement etc...