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Questions tagged [cross-section]

9 questions
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How to calculate principal moment of inertia of an unequal angle?

Is there a formula to calculate the moment of inertia of an unequal angle? I am not talking about x or y direction but the maximum and minimum moment of inertia about its rotated axes (usually labelled u and v) through its centroid. I can get this…
Wilson
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Failure in Hollow, Thin Beam due to Collapse of Cross Section

I'm having trouble figuring out how to predict the failure of a hollow channel due to bending. If I'm correct, for a beam with a static second moment of area, $I$, the following equation could be used to find the bending moment needed to cause…
Nick Fingerle
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How do you ensure that a beam is loaded through the shear center?

Reading about shearing stresses in beams, it is commonly stated that it is necessary to load a section through its shear center, so no twisting is applied to the beam. This is specially important in thin-walled open section, that have very weak…
Msegade
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How to integrate ∫vᵢ(uᵢ² + vᵢ²)dA in calculating monosymmetry index of an angle?

I saw this question asking about calculating monosymmetry index of an unequal angle. What I need is a formula to calculate $\int v_i{(u_i}^2 + {v_i}^2)\text{d}A$, given the depth $d$, breadth $b$ and thickness $t$ of an angle. $A$ is the area and…
Jennifer
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Is there anything in BS 8888 regarding the scale of a section view?

If a section view isn't sufficient enough to show all details required, can it be at a larger scale than its parent view? Is there anything in BS 8888 regarding recommended scales in section views? Thanks!
sworks2021
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Which program should I use to find moment of inertia of complex sections?

It is an aluminium section for a mullion and transom and the autocad drawing I have is very complex and I tried using autocad mechanical but it does not work as I am not able to select the area as it is very complex. The properties say that the…
rukuto
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What is the difference between pipe section, hot-finished, and cold formed circular hollow section?

I was reading a steel catalog and saw that it categorizes steel sections separately into pipe section, hot-finished circular hollow section, and cold formed circular hollow section. Given the same design strength, for example S355, is there any…
Jennifer
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Determine shear flow direction in profile/beam section

I have been looking at the location of shear flow centers for profiles for my mechanics of materials course. I am trying to figure out how to determine the direction of the shear flow in a given beam section with a shear force which is either…
Maarten -Monica for president
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what is the minimum number of reinforcement bars in a circular tie rod?

I know that the minimum number of reinforcement bars in circular concrete section of columns are 6, is it the same for circular tie rod section?
Samir Benabdelaziz
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