Taper steel design principles

Michael1983au — Fri, 15 Mar 2024 06:55:58 GMT

Dear all,

I'm working on a research of taper steel design approaches comparing efficiency of various structural analysis packages.

I've modelled sample tapered rafter in Space GASS (using automatic generator of prismatic members), Robot and Strand 7. Robot and Strand 7 came with nearly 100% match on NTM , deflections results. I had a bit of a look at help file at Strand 7 and can see all the theoretical background about splitting the beam into specified number of integration points.

My question is - does Robot have an explanation on how exactly the stresses are calculated in the software, which method is in use? And how does the steel member design exactly calculate the capacity of the member?

Unfortunately, I couldn't find theoretical background in Robot helpfile on this problem and can't prove that this software is the best to model taper steel than Space GASS to my manager.

I've attached an example of Strand7 help file with full details of implementation of the method to the end user.

Or this link could be used instead - https://www.strand7.com/strand7r3help/Content/Topics/ResultsInterpretation/ResultsInterpretationBeamTaperValidation.htm

So it would be nice to have something similar from Robot knowledge base.

Thank you for your help in advance.

Re: Taper steel design principles

G_sus91 — Thu, 27 Mar 2025 02:40:31 GMT

I’m looking for the same information on 'Taper steel design principles' and the closest thing I’ve found on the topic is this article. How deflection of tapered beams is calculated in Robot Structural Analysis.

I’ve found differences in the working ratios when reviewing tapered steel members with other softwares, like SAP2000, using the American standard AISC 360.

topic Taper steel design principles in Robot Structural Analysis Forum

Taper steel design principles

Re: Taper steel design principles