Questions and discussion for this lecture live here. Fire away by hitting Reply below 
Hi Sean,
I am a member but I can’t lunch vidéos of this course.
Hi Abdelhaq,
Yes as the course is still under construction (very nearly finished!), this lecture doesn’t actually have a video yet. The first video is on lecture 4.
Seán
[Edit → Video is now live…as you can see above 
]
1 Like
Hello,
First of all, thank you very much for everything you have done. I love improving my Python skills and my knowledge of structural analysis. Thank you.
I just realized that the course on the old site labs.degreetutors.com was “readable,” meaning there was a lot of very interesting text below the video. Will you be adding this text later? Because after watching your video, I like to read it.
Thank you.
(Sorry for my Franglish).
Pierre
Hey Pierre,
Yes absolutely - I’m literally in the middle of migrating the text lessons for this course over from my Labs site. By the end of the month (and hopefully a little sooner) I should have all text lessons for this course ported over.
Great to hear you’re enjoying the course!
Cheers,
Seán
Hi Sean,
This looks like an interesting course. Currently, I’m exploring a few specific questions, and I’m curious if this course covers the theory to calculate:
- The effective moment of inertia for steel-fiber reinforced concrete (to calculate deflection).
- T-section analysis when flanges are in tension (to calculate stresses in slab reinforcement and justify effective flange width for section analysis).
I also join other comments and want to thank you for all your work and efforts in sharing knowledge and building the community. It’s really inspiriting 
Hey @ilya,
We don’t cover moment of inertia calculation for fibre-reinforced concrete - that’s an interesting idea…I would have assumed it would be the same as a regular section - it’s not immediately obvious what influence the fibre reinforcement has on the I value - am I missing something??
We do look at the design of T-sections but not when the flange is in tension. I’m working remotely at the minute so don’t have access to my design guides and references so I can’t say what the EC2 guidance on this is. l guess that you’ve already considered the easy option of assuming a flange width equal to the beam width and this isn’t sufficient?
S
Hi Sean,
Thank you for the reply. I think I did not formulate the question correctly.
The moment of inertia of a gross section would, of course, be the same, but I wonder if steel fibre in concrete would increase cracking moment (by increasing modulus of rupture), or maybe it would affect the modulus of elasticity, which would affect distance to the neutral axis and, consequently, the moment of inertia of the cracked section. So, the problem comes down to figuring out how steel fibre affects concrete cracking which should result in the reduced deflection.
Regarding the T-section, the problem is that I am using a narrow beam (100mm wide rib in a waffle slab) and there is not much room for steel if we don’t use flanges.
I am using the New Zealand Code (which is largely aligned with the EC). It allows the use of reinforcement in the flanges only if the “total contribution of flexural tension force in each outstanding portion of a flange does not exceed 10% of the total flexural tension force,” which means that I can only consider reinforcement within the web and a little bit of steel in the flanges. There is a clause that says it is possible to use more longitudinal reinforcement from the flanges provided that a strut and tie analysis demonstrates that the shear flow in the flanges with longitudinal reinforcement is adequately connected to the beam web by transverse reinforcement. So the question is how to do the strut and tie analysis right
I am not sure that this forum is meant for this type of questions, but I would be grateful for any comments.
Thanks,
IM
Ah - yes I see what you mean re. steel fibres and the likely increased crack resistance. I must say that I haven’t worked with steel fibre reinforced concrete and wouldn’t be in a good position to advise you here - I have often wondered how one performs the section analysis on this type of section though! I would greatly appreciate your feedback, once you do work it out 
.
In terms of the strut and tie analysis - we do actually consider this in the course (lectures 30 and 31) when we consider longitudinal shear resistance. This should give you some insight into how to apply the variable strut model to your specific case.
You can ask any engineering question you like
Seán
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Hi Sean,
i saw previously that you were going to add servicability calculations and the columns and slab analysis. with the column please consider axial and bending moments too. also Nature of prestressing and properties of prestressed concrete. Prestressing techniques. Analysis of stresses in statically determinate and statically indeterminate prestressed concrete beams. Behaviour of prestressed concrete elements under axial loading, flexural loading, shear, torsion and combined loading.
Hi @miransadiq11 - there is more concrete content on the way - but I have a couple of other courses I’m working on releasing first - so I have no timeline as yet on the next concrete course. Just a head’s up though, I’m not likely to be covering prestressed concrete in the foreseeable future.
Seán
Hi, Thanks for the update. I’m currently studying Civil Engineering and just wanted to say your videos were really helpful last semester, especially the ones on beams and shear. They made a big difference in my understanding.
I’m preparing for next semester (starting in August), and we’ll be covering topics like reinforced concrete slabs, columns, staircases, footings, and retaining walls. I’d really appreciate any advice you can give on how to approach these topics and how to structure a study timeline. Your content has been super helpful so far, and I’m looking forward to learning more through it, hopefully before the next semester commences which is in August this year.
Hey,
Great to hear that you’ve found my courses and tutorials helpful.
In terms of a plan for studying RC design, I would say that the most important thing is a solid understanding of section behaviour (what we cover in this course). Everything flows from that - once you clearly understand the fundamentals of how an RC section resists bending and shear, designing other elements are just variations on a theme.
In reality, R.C, design of specific elements is as much about learning the ins and outs of the specific design code you’re using, BS8110, EC2, ACI, etc. I would also say that learning how to design each element can be done in relative isolation. By this, i mean that the design of staircases isn’t contingent on first learning how to design columns (we’ve another tutorial on this coming soon BTW). So, order isn’t that important, provided you’ve started with the fundamentals of section behaviour.
I hope that helps, good luck with the rest of your studies.
P.S. I notice that you had another question that you’ve since deleted - I’m guessing you’ve gotten to the bottom of it yourself but shout if you still have a question.
S
Thank you so much for taking your time to respond to me.
im surprised you saw of my deleted comment, it was actually about using factored fyd or not for the strain relationships, but ive understood that concept thats why i dint want to bother you more.
and glad to know you new tutorial coming soon, is it on columns only or does it have thigs like slabs and footings. if we could get a full course for slab plus footing together with columns, i think we would really appreciate it, and it make us more confident in our studies, but before August so we can study and practise before the semester starts. im actually from kenya and i am studying civil engineering BSC in University of nairobi.
I’m afraid I definitely won’t have a full course on RC design done by August! But there should be at least a couple of relevant tutorials to help you along.
Good luck with your studies - I hope you find EngineeringSkills a helpful resource along the way 
Seán