Angle L2x2x3/16 vs L2x2x1/8

[m1208]

I had specified L2x2x3/16 angle bracing for a very small (12" wide x 12" tall) bracing system. The length of the brace is 13" The shop has fabricated the bracing system with L2x2x1/8. I checked the allowable load and L2x2xx1/8 is still satisfactory to resist the load. My question is the AISC tables do not list L2x2x1/8 and is there any reason for that? Since the calculations satisfy the L2x2x1/8, is there any problem using it?

 

[m1208]

Correction:
I am sorry it was TS 2x2x3/16 vs TS 2x2x1/8 (not angle).

 

[JedClampett]

There's sections that the AISC Manual, for whatever reason, don't list. Maybe they're not big or "structural" enough. They might be listed on line or in some catalogues.
If it works, use it.

 

[TehMightyEngineer]

Yep, the W6 and W4 sections are not listed in any of the AISC manual quick reference tables either dispute being very common sections. They're just not big enough for typical building uses and thus AISC annoyingly ignores them.

Professional and Structural Engineer (ME, NH)
American Concrete Industries

http://www.americanconcrete.com

 

[transmissiontowers]

I thought the AISC tabulated the most commonly produced sizes here:

http://www.aisc.org/steel/searchForm.aspx?id=2044

_____________________________________
I have been called "A storehouse of worthless information" many times.

 

[BUGGAR]

They're known as bar shapes.

 

[Triangled]

if the geometry of the section and the quality of the material is sufficient both for the member and its connections, I don't see a problem

 

[DETstru]

If the section can handle the load, it's fine.

Side note: if you look at open web joist shop drawings or calcs you'll notice that they often used angle shapes that aren't listed in the manual. They go down to 1/32" increments rather than the 1/16" that you'll find in the book.

 

[JedClampett]

If angles are anything like plates, with the processes they have today, they can roll them to any decimal number you want and hit it dead on. So, if I know anything about the OWSJ business, they get a large order for joists, like a big warehouse, and if they need 1" x 1" x .157" angles, they order them. Same thing in the tank business. They order plates for the tank they've designed to the gnat's hind end. If it saves them 500 lb of steel, that's $1000 in their pocket, not to mention shipping.