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Structural Steel Dimensions?

Structural Steel Dimensions?

Structural Steel Dimensions?

I am looking for all feature dimensions for steel structural c channel.  Looking in the Ryerson book only shows overall dimensions.  I am looking for radius and taper dimensions.  I know these are not held that closely but I would like to be in the ballpark.

RE: Structural Steel Dimensions?

Do you mean how the flange tapers from the web outward?That's a 2:12 slope, or 16-2/3 percent for "C" channels, and something different for "MC" channels.  The AISC Manual should has that information in part 1 of the 3rd LRFD edition.  I don't know about the radius.

RE: Structural Steel Dimensions?

The flange slope is as noted above.

The problem with the radius is that it apparently varies from one mill to the next- that's why they don't tabulate it. I normally come up with a radius based on the "k" values in AISC-ASD (for pictorial use).  Note also that there is a radius on the tips of the channel webs which isn't tabulated anywhere.  The "k" value is probably based on the largest common radius, while the tabulated section properties are probably based on the smallest common radius.

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