How to Design a Steel Beam

In this video we are going to design a steel beam together. We will check the beam for bending moment capacity and deflection (shear and bearing are not discussed in this video).
We will have a quick chat about dynamic effects, the difference between design section moment capacity and member moment capacity, effective length, lateral restraints, critical flange and much more.

Inside this video, I'll cover:

1. Introduction (00:00)
2. Numerical example (00:33)
3. Loading (01:44)
4. Bending action (02:57)
5. Deflection limits (03:15)
6. Design Section Moment Capacity (04:15)
7. Deflection calculation (04:45)
8. Dynamic deflection (05:35)
9. Full Lateral Restraint (06:40)
10. Examples of lateral restraint (08:18)
11. Beam flexural failure modes (09:40)
10. Lateral Torsional Buckling (10:09)
11. Critical Flange (11:15)
12. Member moment capacity(12:33)

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[mini]

Best explanation. I have been so confused on this for a while. Thankyou for clearing the confusion.

[AB-guui]

Amazing vids! Im in my third year and doing steel structures at the moment. Will be doing Timber Structures and Pile Foundations next semester as well !

[assasinman]

Being in the middle of studying for my own steel design exams, that skit had me laughing and crying. Love your stuff mate.

[Tamil.o.Official]

useful video, Can you tell us why we need ULS and SLS? Why don't we check everything under ULS, BM, SF, DF, etc.?

[RaymondBond-knkr]

Do you precamber steel beams to compensate for short and long term deflection? The PFC would have some restrant due to the joist connection plates that are welded to the flanges and web of the beam at 450 centres. Are you familiar with the publication called Steel Designers Handbook written by Ron Tinyou. He is a structural Engineering lecturer at UTS.

[sx]

Brilliant! More real-life examples with Aust. Standards, please!

[okoyedavid]

Wow, thanks for the quick class. I'm actually on a project to design a stanchion for overhead tanks. Pls do you have any advice for me?

[RaymondBond-knkr]

Just another question that I want to ask you. Are you on LinkedIn and are you familiar with John Bradfield?

[junaidgurmani]

Hi, where can I get the table of design moment capacity without FLR.

[Loksta]

Sorry to be a pain, i am having trouble repeating your dynamic deflection calc and obtaining the value for Ireq you got. What is the LHS value on the equation presented so we can solve for Ireq? Thank you

[Loksta]

Great video. thank you! i wanted to ask is there a standard document/book which shows the weight of building materials for Australia that Engineers refer too? this would help with Load takedowns in the real world. Preferably these values are in kn/m2

[daohoanghiepphan]

Hi mate, thanks for your informative video. Just have a question about the dynamic deflection, so could you please give more information or explanation for this point? Is it declared in the AS or somewhere else? I would like to read further about its applicable ranges, such as for other beams (cantiliver, fixed-ends), other usage purposes (residential, office...) or other restraints (full or without restraints). Thanks.

[hamidpasha]

Hi you hnave not taken the load of steel joist on steel beam in load calculation. These Jiost will apparently act as a point load on the main steel beam.

[tonpituwai]

the section moment capacity should be greater than the design moment! 37knm is less than 2889knm, this is not correct