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AISC TABLE 3-10 MISSING BEAM SIZES (W14x176)

AISC TABLE 3-10 MISSING BEAM SIZES (W14x176)

AISC TABLE 3-10 MISSING BEAM SIZES (W14x176)

(OP)
Hi All,

Why are beam sizes missing from table 3-10 AISC. I always thought they had the moment capacity for all beam as long as span to depth ratio is with in 30. I might have been lucky with beam sizes I was looking all these year but this morning I came across beam W14X176 used on one of my project. I was looking for the moment capacity of beam it is not even on AISC table 3-10. Could someone enlighten why is this missing on the table. I definitely think there is specific reason to it to be not available on the Table 3-10 for any spans. I would appreciate your comments.

Thank you,

RD

RE: AISC TABLE 3-10 MISSING BEAM SIZES (W14x176)

Just glancing through, I don't see any beam sizes from that roller set in 3-10. If I had to guess, I'd say that only a very few mills have that set of rollers, and they probably only use them for special orders. The largest W14 is a x132, which is the largest beam in the next set down.

The tables are meant to be design aides, and not the end-all, be-all of our designs. As such, they only put information for commonly used and readily available materials. If they put EVERYTHING in the table, it would be illegible.

RE: AISC TABLE 3-10 MISSING BEAM SIZES (W14x176)

(OP)
Thank you PhamENG. There are only few handful of beam missing from W14 and W16 i see most them on the table. As you mentioned that could be the reason and it seems if it does not perform in flexure then those seems to be not included as well.

RE: AISC TABLE 3-10 MISSING BEAM SIZES (W14x176)

that is a monster beam, I have only seen those used as parts of a truss, in which case the loads were primarily axial. Could be why they wouldn't be considered a typical beam.

As Pham indicated, technically you can used the provisions in the design codes to design any shape as long as you know the geometric properties. So unfortunately you may just have to do that one the old fashioned way.

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