The rules of thumb for steel design

[@ninzo3727]

Thanks a lot Brendan, I've been designing Steel Structures for more than 4 years now and everytime someone asks me to roughly estimate the sizes of the members I always feel uncomfortable giving out sizes unless I've modeled the structure. This is really handy.

[@BrendanHasty]

Hi NinZo, thanks for the support. As said in the video it is only a place to start. It is also good to check your own work. Glad that I could help.

[@sh0wman2]

Thanks Brendan, I'm a structural engineering Student in QLD. Your videos are helping me a lot for my internship job. Cheers.

[@BrendanHasty]

Hi 박성원, thanks for watching and commenting, glad that my videos have been helping. hope my future videos keep helping you out.

[@joreilly]

Great content Brendan. I'm a structural eng. with 10 years in water resources and hydropower. I find your videos very helpful, nice to see somebody talk about common questions everyone has both as a student and practising professional. Great work and looking forward to your future content.

[@BrendanHasty]

Hi James, Thanks for the support. Hope to keep impressing.

[@TonioCartonio619]

Hello Brendan, I just wanted to say that I hope you keep doing videos like this. I think they are very informative (I guess it's the correct word) and also you make the topic easily understandable. Ciao from Italy

[@BrendanHasty]

Hi Tonio, thanks for letting me know and your support, it makes my day. Glad you found the video informative, I am trying to make it easy to understand and hopefully as entertaining as possible.

[@thesage1096]

Mr. Hasty, HUGE thank you for this video, i have to be honest and say this is one of my favorite videos by you, these rule of thumb is so so helpful when you are new and need atleast a starting point to beginning your design and member sizing. As you are aware, design is an iterative process so the closer your initial assumption, the faster you can complete the design. this is the kind of thing for some reason, atleast here, we are not thought, it might be different at the universities over where you are, i think . the theory and formulas are great, but id argue that these bits of practical pointers are almost just as important. this video was pure gold mate. cheers for leaving the numbers in the description. You continue to impress and soar past expectations, Mr. Hasty.

[@BrendanHasty]

Thanks Sage, Glad I have exceeded your expectations. University is the same here, they focus on theory not practical applications, I only leant them after starting to work. Agree it is a very important for engineers to know. Hope to keep impressing.

[@lafisk9906]

This is the most useful vid i saw on the internet today. Thank you so much

[@BrendanHasty]

Happy to hear that! Thanks for your time Lafi!

[@wns1212]

I'm enjoying your videos I'm a practicing Civil Engineer from Zambia.

[@hamidanghaie5197]

Many thanks Brendan, Great video

[@BrendanHasty]

Thanks for the support

[@TheunsGideonJudeel]

Great video! I really enjoy these videos where you get into the practical applications. I've also joined the patreon support, looking forward in engaging more and sharing my passion for structural engineering!

[@BrendanHasty]

Hi Theuns, back-to-back steel videos. I do not know how to thank you enough for your support, look out for next week for your shout out. Also, any topic you wish me to cover ask on Patreon, here to building a community with a passion for structural engineering.

[@milquetoste]

Thank you very much for your videos we really do appreciate it!

[@BrendanHasty]

Your kind words just made my day! Thanks for your support.

[@DeepakKrishna11]

Another day another superb content. Just loved these thump rule videos. Keep going mate.

[@BrendanHasty]

Hi Deepak again, thanks for you on going support, hope to keep up with your expectations.

[@prabinpathak9819]

One of the best Brendan. Thank you

[@BrendanHasty]

Glad that you enjoyed it. do you have any other rule of thumbs that i missed?

[@albertfoo1569]

Your videos surely needs to be part of EA CPD

[@BrendanHasty]

Hi Albert, it technically does under self-learning but would love it to officially be.

[@wongxiao8547]

Thanks for this video. As an architect, this is really helpful for me too. It saves my time on things that I should assume for rough structure when I am designing a building and this would help me better make coordination with my fellow structural engineers. Do you recommend a book where rough structural useful concepts and rule of thumb are recommended for architects for structures of brick and motor, RC design, steel design, timber framing and shell structures?

[@BrendanHasty]

Hi Wong, I have a video on concrete; it would require several books to cover these topics. Also, I have yet to see any good one other than the structural engineer's handbook by Fonia Dobb, but that is more for structural engineers. I will be putting together PDF and will take some time to ensure it is good.

[@wongxiao8547]

@@BrendanHasty Thanks for the reply! I couldn't really find the book. Can you please give me a link?

[@BrendanHasty]

Its available on Amazon geni.us/BUeqO

[@anthonypradeepalles7330]

Thanks Brendon this is very useful

[@BrendanHasty]

Glad that you found this helpful

[@anthonypradeepalles7330]

Thanks

[@BrendanHasty]

Thanks for the support.

[@PottersClay360]

Hello Mate. Your continuous content creation and knowledge transfer is well appreciated. I'd like to get clarification on the bolt connection aspect on 2 of your episodes. On this episode @ minute 1:30 you mentioned that no.s of bolt = member depth/100. Whereas in your episode "The rules of thumb for steel design" @ minute 13:10 you specify no.s of bolt = depth/10. What's the difference pls? Or which is correct? Thanks

[@tafadzwamusekiwa659]

Hi Brendan, thanks for the Informative videos.

[@BrendanHasty]

Thanks for the support, Tafadzwa.

[@shvannajeeb2615]

Great video. Thanks for your effort

[@BrendanHasty]

Glad you enjoyed it!

[@leonardpeposhi5154]

Hi Brendan, This is an informative video, Which forces are classified as uplift forces in a floor beam?

[@michaelbeck402]

Spot on, as usual

[@BrendanHasty]

Hi Michael, thanks for the support. comments help alot.

[@MsDJ619]

Rule of thumb for concrete next video perhaps ?

[@BrendanHasty]

Hi Brooks, Maybe not for the next video but it is on the list, thanks for the suggestion

[@ammarahmad4440]

Hi Sir Brendan! I recently got admission at University of Wollongong for my Masters in Civil(Majors in Structural Engineering) and your videos are very inspiring for me as I am seeing first time that an experience person in this field is teaching us with practical knowledge. I have been doing structural RCC design in Etabs and Sap 2000 from a while bcz basically I am from Pakistan and I am moving to Australia in Feb 2023. I have seen many of your videos and you always encourage your juniors. Can you please guide me, I should work more on Etabs, Sap 2000 and Tekal structures if I want to be a successful Structural Engineering at Australia or do I have to add more software? Any recommendations will be too much worthy for my career. Thanks a lot for what you are doing for us

[@1216manting]

Nice video Thanks Brendan!

[@BrendanHasty]

Thanks ManTing

[@argkex9091]

Great video and thank you for sharing your knowledge. I am a site engineer and we use portal frames for our buildings. Regarding the haunch length the rule of thumb is an 1/8 of the frame span? For portal frame columns only the ratio span to depth (up to 50) affects the size? Does the ratio of span to height of column play any role?

[@BrendanHasty]

Hi Argiris, the height and stiffness of the column would impact, as a starting point it is good to still start at a span on 50. then detail computations can confirm, but you should still be in the ballpark.

[@user-bz9ii9qn1j]

for more explain perfered detailing shema explain phenomena

[@WincherterOwns33]

Great vídeo, thx so much

[@ayadjasim9911]

Excellent .. we hope to talk about the size of steel column VS height of story as a thumb rule ? .. Thx

[@BrendanHasty]

This is something I can do next time I did cover column based on number of floors

[@MarcusMussawar]

could you point me in the right direction for information or formulas for shock loading steel members with steel chains the problem is a 1000kg load dropped 1m what is the chain needed? all that i can find requires me to know displacement or duration of impact which i don't know for steel chain on a steel beam

[@qureshisiddig9274]

Many thanks you've unique way to deliver the information I want to get into calculation of built up section with reference you recommend to me Preferably if American references

[@BrendanHasty]

Hi Qureshi, Thanks for the support. do you mean how to design/ build up unqiue steel sections?

[@qureshisiddig9274]

@@BrendanHasty what is recommend spacing between the secondary beams to be econmically and constructable

[@congchu8654]

Thank you for the video

[@BrendanHasty]

Thank for watch Cong.

[@congchu8654]

@@BrendanHasty Ah Can I have a question? Do you think Melbourne polytechnic is better than a university?

[@kartiksapolia]

Very helpful

[@BrendanHasty]

Glad you found it helpful Kartik.

[@osamagad1710]

Very organized

[@BrendanHasty]

Hi Osama, Thankyou for watching and support.

[@shaunreddish5628]

Hi Brendan, another great video! Is there any chance you could share the studies you have seen that tell us the deflections are roughly 20% better than you expect them to be?

[@BrendanHasty]

Hi Shaun, will see if I can find the studies that you will be able to open freely. Thanks for watching and your support.

[@HariOmSharma-cw6rs]

Helpful!!😄😇

[@BrendanHasty]

Thanks.

[@peterchrien]

Do you have a video about cutting sizes of steel for welding? Should be there some tolerance or not?

[@BrendanHasty]

Hi Peter not yet but it should be around 10mm tollarance, different elements will have tollarance for example casting bolt it is around 4mm

[@PNS28]

Hi Brendan, nice explanation, how about a rule of thumb video aimed to Architects? so I guess a bit more general/simplified? Thnx

[@BrendanHasty]

Hi Pietro, thanks. that would be good this will be something that I will work on.

[@liewyingket9686]

I don't think QTY of bolt equal to depth of beam/10 is correct for instance if the beam depth is 300mm then will end up to using 30 bolts for each connection?

[@BrendanHasty]

Did I say 10 it should be 100 so 300 deep 3 bolts

[@tojogbaby2733]

Hey, as per the thumb rules,could please explain per m3 concrete, how many kg reinforcement used in colum,beam and slab

[@BrendanHasty]

Hi Tojo, thanks for your support. I will add it to the list this would be a useful video.

[@argkex9091]

Any rule of thumb for anchor bolts size regarding diameter and depth?

[@BrendanHasty]

Hi Argiris, typically I just design them as they have so many variables.

[@pebriantonjoko2013]

is it possible to cantilever with a span of 6 meters using a wide flange with a height of 300 mm and a width of 150 mm

[@BrendanHasty]

Hi Pebrianto It would depend on the load and back span.

[@ayadjasim9911]

Plz for No. of bolt .. beam 12 inch we need 12 bolt to connect.. 6 for each side ? .. is that you mean ? .. Thx

[@BrendanHasty]

Hi Ayad that rule is for mm. For inches it would be divided by 4, so for 12 inches/ 4 would by 3 bolts.

[@mbartarin]

Hi Brendan, I'm from Brazil and I'm finishing my degree in civil engineering, I currently work in a steel structure company and I would like to know what software do you use for analysis, dimensioning and detailing of steel structures? PS: I really like your videos

[@BrendanHasty]

Hi Matheus, thanks for the support. For analysis Spacegass, excel, mathcad and my own programs written in pythong. for detailing and dimenioning Bluebeam and Revit.

[@murtaza6542]

Hi Brendan! I am considering to studying structural engineering however i am having issue with making the right decision. As far as my research structural engineering is not too easy as you would have to learn all theories and principles which takes time and lots of effort. On the hand , the salary is not as good as it should be. I have friends who are strctural engineers making 70grand while my other friends who are trades making almost double. My question to you is it worth putting all these effort and time ?

[@BrendanHasty]

Hi Murtaza, structural engineers can start low but can increase over time. But I would recommend that you do something you would find more enjoyable, you don't get rich on a salary look into compound interests. Also typically trades are great while you are young but get harder when you are older. Hope this helps yes engineering is can be alot of effort to learn but I enjoy it.

[@ebenezerannam3391]

Hello

[@Osama-Anwar]

What is the unit of deflection in that frequency formula. Millimeters?

[@BrendanHasty]

Hi Osama, it is in Millimeters, sorry I would have put that in.

[@jasonRhawt]

Do you have any videos on timber?

[@BrendanHasty]

one coming out tomorrow look out for it, it is really only an introduction to timber. there will be future videos on timber design as well

[@ayadjasim9911]

Plz in no. If bolt for beam 12 in .. we need to 12 bolt .. 6 for each side .. is that true ? .. Thx

[@BrendanHasty]

Hi Ayad that rule is for mm. For inches it would be divided by 4, so for 12 inches/ 4 would by 3 bolts

[@ayadjasim9911]

@@BrendanHasty Hi Brendan .. in mm Will be. 300/10= 30 bolt not 3 bolt ?! .. plz can you clear that point

[@BrendanHasty]

Hi Ayad it should be /100 so 300/100 would be 3 sorry if I made a mistake

[@BrendanHasty]

Depth / 100 in mm 300/100 is 3

[@irfanriyadi8884]

What the mean "span/depth"? And what unit of span?

[@BrendanHasty]

Hi Irfan, these are based on mm, however, it would align in inches. for example Span/depth = X therefor beam depth should be ~ depth = Span/X

[@BrendanHasty]

Ratio is 20 to 24 with 60 m max

[@BrendanHasty]

So no more the 60 meter on average

[@HariOmSharma-cw6rs]

Steel design😁😁😇

[@BrendanHasty]

Steel Designers