How to determine steel strength formulas

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Discussion Overview

The discussion revolves around determining the appropriate steel strength formulas for selecting steel tubes for sign support. Participants explore comparisons between different tube dimensions and wall thicknesses, as well as considerations for steel plate design.

Discussion Character

  • Technical explanation, Debate/contested, Homework-related

Main Points Raised

  • One participant seeks to compare the strength of a 5 x 5 inch tube with a .25 wall to a 6 inch tube with a 3/16 wall, expressing difficulty in finding relevant formulas.
  • Another participant suggests consulting the AISC Steel Construction Manual 14th edition for guidance on steel design and capacities.
  • A different participant mentions the importance of evaluating the second moment of area (beam moment of inertia) when comparing square and round tubes made of the same material.
  • One participant inquires about materials related to the design of steel plates, indicating a broader interest in steel design.
  • Another participant requests more specific information to provide a useful response, highlighting the need for clarity in the inquiry.

Areas of Agreement / Disagreement

Participants express varying levels of specificity in their questions and responses, with no consensus reached on the best approach to determine steel strength or the most relevant formulas.

Contextual Notes

Some assumptions about material properties and design criteria may be missing, and the discussion does not resolve the mathematical comparisons needed for the strength evaluation.

craigbrown18
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not sure if I am in the right place or not but nevertheless need some help

I am trying to figure the correct steel to use for sign support.
I am trying to determine if a 5 x 5 inch with .25 wall is as strong or stronger than a 6 x inch tube with a 3/16 wall. Can't find any formulas to help me out.

thanks
 
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Check out the AISC Steel Construction Manual 14th edition.

It usually governs for steel design/capacities in the public works arena.
 
i am looking for materials with regard to design of steel plate
 
You will need to be a lot more specific if you want a useful response.
 

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