Steel Structure Optimization: Part 6B - Optimization using Tapered member-An Overview || Taper Depth

Have you ever wondered why in PEB industry, tapered sections are used as a rafter or column member? Is it only for economic design? Also, how these tapered profiles and section depths are calculated along the span?
If we design a steel structure in STAAD using traditional design approach, then we need to manually review the design results and change the section size so that the optimum section is used. This process is time consuming, also it is very hard to find out the most economic section by trial and error method.
Optimization does not mean use of an economic section only, rather we need to ensure proper distribution of material where it is required. And with this approach, we can further reduce the steel quantity and overall construction cost of any structure.
In this video, I will cover the basics of tapered member design, how the profiles are determined, how the section depth at various location is fixed. Also I will cover the factors which affect the section selection process including high shear, interaction and serviceability conditions.
Previous Session:
Part 6A - Optimization using Castellated & Cellular Beams || AISC DG31 -- • Steel Structure Optimi...
Next to Watch:
Modelling Analysis & Design of PEB Structure: Part 1.0 - Introduction and Contents -- • Modelling Analysis & D...
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Complete Series on Steel Optimization -- • Steel Structure Optimi...
Implementation of IS800:2007 code in STAAD.Pro CONNECT Edition -- • IS800:2007 code implem...
Modelling Analysis and Design of PEB Structure -- • Modelling Analysis and...
Design Automation with STAAD -- • Design Automation with...

[@player30190]

Very great explanation..... plz keep making videos on various steel structures by using indian and international codal practices also.....👍

[@surojit_ghosh]

Thanks for your suggestion, Darshan. I will try to cover IS, AISC and Euro code in my upcoming videos.

[@sadanandaswamy6918]

Very nicely presented sir. Your contents are really helpful... Thanks for all your efforts.

[@surojit_ghosh]

Thanks for the feedback Sadananda. Nice to hear that you enjoyed this video.

[@sadanandaswamy6918]

@@surojit_ghosh sir is it possible to have a detailed video on modelling a peb in physical modeler with all the design parameters and loadings

[@dextergellizeau9330]

Hello Surojit, Thanks for the speedy reply. The excel macro sheet I am referring to is for the Design/Optimization of Tapered Member.

[@surojit_ghosh]

I have developed this only for IS800:2007 code at this moment. Several OpenSTAAD functions which are required for tapered optimization are not available and I have to develop the entire Indian design code engine by myself to make this work. Unless those functions are implemented, I am not in a position to implement tapered optimization for other design codes, hence this will not be published soon.

[@mainuddinfaisal4532]

I really grateful to you Sir.

[@MohanA-ll1zq]

Hello surojit, Can you explain the bending moment and shear force match with staad results.. it will be great helpful to all. Tnqq

[@prawingajbhiye8816]

thank you so Sir much for the explanation

[@josephlucas4115]

May you please prepare session of design of steel structure with haunch in Staad pro as we know haunches is not directly available in Staad but there is a way which that can be taken into account and design them accordingly

[@usmanraza7587]

Would you be willing to share this Excel design sheet..?? It'll be highly appreciated By the way nice content. Helps me a lot as a structure designer. Love from Pakistan

[@1989ENgVic]

why Physical member Design not yet implemented in all Codes only AS? other software like Prostructures etc have such.

[@rajashekharsb9813]

please explain how to optimize taper member itself

[@shehzadattarwala9936]

Hello Surojit Sir, your work is fabulous in the field of automation. Can we prepare same MTO for RCC as well?

[@surojit_ghosh]

This template can be used to extract concrete information (volume, weight). But right now reinforcement information cannot be extracted using this. As there is no direct function available to get the reinforcement information for any concrete member, it is a bit tricky to extract the bar information. Also RCDC can generate a very extensive BOM for concrete member. That's why I have not included this facility in the MTO template. I will include concrete member in future.

[@imranmohiuddin968]

Hello Sir, Your videos are really helpful. Is the excel macro sheet for the Design/Optimization of Tapered Member available for download. pls upload it if its finished. Thank you

[@mohammedkashifhussain6423]

Hello Sir, Very informative video. How can i get acess to the excel sheet you are using in the video

[@indramlimbu6886]

sir, please make a video on connection designs especially that of bracings.

[@surojit_ghosh]

You know, it is really very easy to design any connection including horizontal and vertical bracing connection directly using the STAAD model data using integrated connection design module. If you assign a connection tag to any member, then the end connection is designed automatically once the analysis is complete, else you need to manually assign the connection template and design. I have some plans to create a new video series on connection design. Keep watching.

[@indramlimbu6886]

@@surojit_ghosh sir...I've been trying to design sag rod bracings both in RAM and idea statica...but it's not working. Sir, please make one dedicated video..especially on rod bracing (sag rod). It would be very helpful for freshers likes me...please sir.

[@win-pe7ud]

thanks sir.

[@vikashkumar-xj1rw]

Sir, i watched the topic and impressed for convincing way the design of peb structure. Pl continue for spread of design methodology.May i request for providing the online course for our updation on the subject and share.kindly share the contact or mail id .The involved excel sheet. Regards vikas Kumar

[@sureshkumar-ji5kn]

How to design castaletted beam? What are the checks we should do?

[@surojit_ghosh]

Not sure which design code you are referring to. For Indian design code, there is no specific guideline for castellated member design. If you want to know about the design rules and different checks, go though DG31 code. Also you can check part 6A of this optimization series for more details.

[@sureshkumar-ji5kn]

@@surojit_ghosh sure sir

[@AbhishekVerma-yx2dv]

Greetings of the day sir Why you have considered wid and seismic cofficient as 0.6...... please explain me

[@surojit_ghosh]

Are you referring to the wind and seismic load combination factor 0.6? Check table 4 of IS800:2007 code, you can notice for limit state of strength, the combination factor is mentioned as 0.6 (DL+LL+CL+WL/EL).

[@AbhishekVerma-yx2dv]

@@surojit_ghosh waaaoo.... You replied within an hour..... I will refer that clause... Keep making such videos Salute to you

[@dextergellizeau9330]

Hello Surojit, how soon the excel spread sheet macro will be available for download.

[@surojit_ghosh]

Which excel sheet are you referring to?

[@rajashekharsb9813]

sir , please tell us how to optimize tapered members please

[@surojit_ghosh]

There is no in-built option available in STAAD to optimize any taper member. We can manually optimize it, by guessing the dimensions, but it will take more time and will not be accurate. We can guess a range of section depth(which I have discussed in this video) and then go for trial and error. But the most efficient way to optimize a section is by using any custom macro. Optimization is a multi-step approach where depending on the selected section, section forces are modified and that further changes the section dimension. So it is always better to take the help of any software or any custom macro.

[@debayandebnath641]

Great. please check mail