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*Benchmark problems* from the _AISC 2010 Specification for Structural Buildings_ (commentary, page 16.1-276) have been reproduced in [ETABS|etabs:Home]. The intention of AISC benchmark problems is to indicate whether or not an analysis software is capable of performing rigorous second order analyses which include P-Δ and P-δ effect.

[ETABS|etabs:Home] captures both sources of [nonlinear geometry|kb:P-Delta effect] with great accuracy, well within the 3% and 5% limitation of AISC. This capability is validated in the benchmark-problem results, shown below, where a column is divided into segments and subjected to compression.

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!worddavcba72aaf0cd02a75e43befd1031e218c.png|align=center,border=0!

{center-text}Figure 1 - P-δ response{center-text}

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!worddav73c94609e8a8d32659d38874dbbb67fb.png|align=center,border=0!

{center-text}Figure 2 - P-Δ response{center-text}


h1. See Also

* [P-Delta analysis parameters|P-Delta analysis parameters]


h1. Attachments

* [Case 1 ETABS model |AISC stability benchmark problems^prob1.EDB] (zipped EBD file)
* [Case 2 ETABS model |AISC stability benchmark problems^prob2.EDB] (zipped EBD file)