Formula involved in calculating Flexuliar Bending

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SUMMARY

The discussion focuses on calculating the flexural stress in a steel column supporting a signboard with an area of 16.60 sq. m subjected to a wind velocity of 130 km/hr. Participants confirm that the overall force can be calculated using the sign's frontal area and wind speed, which can then be distributed between two cantilever beams. The flexural stress can be determined using the formula σ = My/I, where M is the moment, y is the distance from the neutral axis, and I is the moment of inertia.

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ronmarie
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Hi! I'm new.

I was just want to size Cloumn using a steel which carries a sign board area of 16.60 sq. m and a wind velocity of 130 Km/hr. is it possible to caculate the stress using those two (2) given?

Thank you
 
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Yes.

Use the sign's frontal area and the wind speed to calculate the overall force. Once you have that you can assume the load is equally shared between the two beams. Treat them as cantilever beams with the force applied to the very end of the beam. From there it's basic beam theory to calculate the flexural/normal stress, i.e.

[tex]\sigma = \frac{My}{I}[/tex]
 

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