Structural Tubing Dimensions

[nornrich]

Hi All,

I am looking for the relationship between the corner radius on various sizes of structural rectangular and square tubing. Is there a relationship between the wall thickness and the corner radius? If not, is there a table anywhere on the web that gives the dimensions for a range of tubing?

rich.....

Richard Nornhold, PE
nornrich@redrose.net

 

[jdkuhndog]

nornrich,

I believe the relationship is outside corner radius = 2xwall thickness.

jdkuhndog

 

[Mandrake22]

That is an elusive subject, I have been carrying around a paper chart for the last 25 years. Give this site a try.

http://www.copperweld.com/pdfs/StructuralSpecifications.pdf

The ASTM A500 standard calls for the OUTSIDE radius to be no more than 3X wall thickness. There is a chart in the Copperweld spec. sheet that gives values for varying thicknesses and also qualifiers depending on perimeter and size proportionality.

 

[ieshadover]

ASTM A 513-00 page 10 gives a chart of ret. & sq. tubing corner radios tolerence. This is the standard for Electric-resistance-weld carbon and alloy steel Mechanical tubing.

The chart goes from 1/2" to 8" size and 3-24 Ga. wall thickness

I do know at standard a 6a/6m 02b is for structural steel bars, plates , shapes and sheet piling but I 'don't believe there is anything in it on tubing.

 

[DesignerMike]

I have also been looking for a steel chart showing the other properties for rectangular tube (moment of inertia, section modulus, area etc)...my old text books have some of the sizes, but not nearly complete.

I hate to re-calculate every time I want to pick a different size (plus my numbers come up a little different), and have been too busy to do a spreadsheet. Sizes like 8" x 2" x 1/4" or 6"x2"x7ga

 

[engineer84]

DesignerMike,

Check out

http://www.engineerstoolbox.com.

It's a good site to calc moment of inertia, section modulus, area etc on line.

 

[DesignerMike]

good resource!

Thanks for the tip.
Mike