Comments on: Stability – AISC’s Approximate Second-Order Analysis B1 B2 Method https://howtoengineer.com/stability-aiscs-direct-analysis-method-b1-b2-hand-calc-method/ Engineers In Training Sat, 02 Jul 2016 01:10:05 +0000 hourly 1 https://wordpress.org/?v=4.4.14 By: Edgar Peetam https://howtoengineer.com/stability-aiscs-direct-analysis-method-b1-b2-hand-calc-method/#comment-515 Wed, 29 Jun 2016 14:40:33 +0000 https://howtoengineer.com/?p=636#comment-515 Dear Ryan,

I have two questions for you. I wonder your view on how to deal with it.
1) To run a second order analysis for ASD it is directed by AISC to multiply the loads by 1.6. But how to deal with it if for these loadcases a 1/3 increase is applicable. Should this factor by reduced to 1.2?
2) If the structure is braced with braces designed to take the lateral loads and the ratio of max second order drift to max first order drift is (say) <1.5, is a first order analysis not always adequate enough?

Thanks.

]]> By: Lane Wilder https://howtoengineer.com/stability-aiscs-direct-analysis-method-b1-b2-hand-calc-method/#comment-306 Mon, 24 Nov 2014 20:02:43 +0000 https://howtoengineer.com/?p=636#comment-306 Newbie here. Is there a part 2 of this post? I’d be very interested. Thanks.

]]>