Brilliant series Robin. Very useful for confirming one's instincts on a domestic renovation project without the cost and delay of bringing in an expert. My estimates are complicated but the fact I seem to have some 100mm IPE's in my French project and those don't figure in the UK tables but it's very reassuring to get figures in the right order of magnitude.
@andrepitt9226
4 жыл бұрын
Great approach and summary of the tools and how to use, simple and correct. Thank you also for the books recommendation, it's always good to get advice from an experienced engineer. Keep up the good work Robin!
@RobindeJongh
4 жыл бұрын
You're very welcome!
@user-sr1bd3qo6t
2 ай бұрын
Thank you for the video
@yogasciencemusic
4 жыл бұрын
You r the best. Thank you for teaching us.
@RobindeJongh
3 жыл бұрын
It's my pleasure!
@finbarrodonnell9106
4 жыл бұрын
Very interesting series of videos. Explained realy well.
@RobindeJongh
4 жыл бұрын
Thanks - hope you find these useful.
@tomfenn7149
4 жыл бұрын
An excellent refresher for my own engineering degree I sat 15 years back. Thanks Robin for these really good videos, which are nicely done (better than my lecturers who seemed more interested in their next cigarette breaks!). Really looking forward to any new ones from you.
@RobindeJongh
4 жыл бұрын
Thanks Tom!
@muhammadsadiq3260
3 жыл бұрын
Hi Robin, you have really simplified the concepts, thanking you Sir. Good work.
@AnthonyBroady
4 жыл бұрын
Thanks for another great video. Would you be able to explain in a video how building foundations are calculated? Preferably something like a reinforced strip. Or why you might use a raft in place of a strip.
@RobindeJongh
4 жыл бұрын
That's complicated but I'll give it some thought!
@johncarrigan9352
Жыл бұрын
Robin. Good content. One thing though. What if the wall you were removing was an external cavity wall. I assume you need two beams then or a padstone to bridge? What does needing two beams do to the calculation??
@RobindeJongh
Жыл бұрын
Hi John. Two beams are usually designed seperately, ignoring any effect they have on each other.
@ririchandra4005
3 жыл бұрын
You explained it more simple,.thanks alot!
@MrBaijesh05
3 жыл бұрын
Thank you very much describing in such a simple way . It helps us alot..
@RobindeJongh
3 жыл бұрын
It's my pleasure!
@gerrysweeney8432
3 жыл бұрын
Nice series of videos Robin - thank you.
@olgailyasova4480
3 жыл бұрын
Hi Robin, thanks for the video. Could you also cover how to calc retaining walls and how to calc punching shear.
@RobindeJongh
3 жыл бұрын
Hi Olga. Thanks for the suggestions!
@TDOWLP
2 жыл бұрын
Hello Robin, thank you for your Videos. I’ve noticed that with Universal beams you use ‘Buckling resistance moment’ but equal leg angle do you use Flexural buckling resistance F or is it not comparable. I’m trying to see if angle can be used.
@oliverkennedy-harris3341
3 жыл бұрын
Wow thank you so much for this series, It has really helped me understand designing a domestic steel beam. Can you do a tutorial on calculating Padstones?
@RobindeJongh
3 жыл бұрын
Thanks for the idea!
@786usernames
3 жыл бұрын
Really nice video. Can you show how to do a loft conversion beam calculation set? In a typical mid terrace house a loft requires usually around 4/5 beams and sometimes a post when there is a chimney. Thanks
@RobindeJongh
3 жыл бұрын
Hi. My steel beam beginner course is still open to pre-release members who can influence the content of the course. Sounds like this may be a good topic to cover there: structural.thinkific.com/courses/steel-beam-calculations
@raymolloy7462
Жыл бұрын
What does the 2.24 relate to....????
@desmondmunn5859
3 жыл бұрын
Hi Robin. Many thanks for the very useful series of videos on beam design. Have you covered padstone design in any of your other videos?
@MrMuhammadhafizuddin
2 жыл бұрын
Does it apply for rectangular hollow sect calculation?
@RobindeJongh
2 жыл бұрын
Yes, works for steel hollow section also.
@kylehill9970
3 жыл бұрын
Hi Robin, this is a fantastic video- the best I have seen. I have managed to follow this with ease! I am curious how I would now calculate the new take down load and if I have to consider if foundations are suitable for the new load?
@RobindeJongh
3 жыл бұрын
Hi Kyle. Thanks for your kind words. You get the beam support reactions from video 2: kzitem.info/news/bejne/zYx8yJOfiJpyp3Y and then would need to do a masonry check and padstone check, which is best carried out by an experienced structural engineer. They should also be able to advise on your foundations.
@macr3530
3 жыл бұрын
Great tutorial very informative, thank you.
@RobindeJongh
3 жыл бұрын
Thanks - glad you found it helpful!
@ahamdalam9653
4 жыл бұрын
Great video, keep up the good content
@RobindeJongh
4 жыл бұрын
Thanks!
@ahamdalam9653
4 жыл бұрын
@@RobindeJongh how can u design a moment connection by hand
@simonhandford1013
4 жыл бұрын
Great videos. Could you do a deflection calc for a ridge beam please as I believe it to be different to a standard beam. Thanks
@RobindeJongh
3 жыл бұрын
A ridge beam would be more or less the same - just take into account the pitch of the roof.
@aion2177
4 жыл бұрын
damn! so much stuff i don't know :)) Thanks :)
@the-not-bigkuhrbowsky4869
2 жыл бұрын
So let’s say I have a beam that’s too weak for my 40 foot opening, what can I do to reinforce it? I plan to knee brace it back to the posts, then do some bar joisting off of the braces below it. Obviously I don’t wanna overload beam with reinforcement as that would be counter productive….
@RobindeJongh
2 жыл бұрын
Hi - a 12m opening is a serious structure and I would definitely have a structural engineer look at it. There aren't many beams that can even span that far, so you would usually go with a truss.
@the-not-bigkuhrbowsky4869
2 жыл бұрын
@@RobindeJongh ya I plan to involve one here pretty quick. Don’t want it falling in on my resto project. So if I add the bracing to the beam will that work or is there a quick and easy formula / constant for “too much weight” overhead?
@discostuart1981
3 жыл бұрын
Once again fantastic well explained video.....how does the deflection number convert to mm. Designing a beam above a bifold so want it to a minimum
@RobindeJongh
3 жыл бұрын
Good question! This quick method uses span/360, so for example if you want 5mm deflection on a 5m beam, that would be span/1000, so you could adjust the 2.24 value by 1000/360 to get the smaller deflection. In this case, 6.22
@danglotzbach9955
4 жыл бұрын
Very good, if I have a 24' trusses and an opening of 22' under a 4/12 pitched roof what size I-beam am I likely to need to free span that opening? I am using 2x4 wall studs to build a room addition. I would like to sit an I beam on the walls to rest the trusses on. Thanks
@RobindeJongh
4 жыл бұрын
Happy to help: forms.gle/fSMzoXMJPrpzVctv6
@brucekirkman4041
3 жыл бұрын
Thanks for the video Robin. Some very useful stuff here, most of which I haven't fully understood yet. I need some advice on how to calculate steel sizes for cranked beams, such as from a ridge to an outside wall where the beam needs to support a hipped roof and also where a low ridge beam joins a higher one so has to be kicked up at an angle in order to do so. Can you help?
@RobindeJongh
3 жыл бұрын
Hi Bruce. Sure, that can be done. I may have a space for some consulting - fill in the form here forms.gle/2KaBVfsZoK6t3khPA
@estherbrizard1148
3 жыл бұрын
Hi Robin, I am removing load bearing walls in an apartment building of 5 floors (all are stacked vertically), do I need to add the distributed load of all the floors above? therefore would i start by calculating the bending moment to find the beam at the fifth floor, then do the same at the fourth floor by adding the distributive load of the 5th floor as well ?
@RobindeJongh
3 жыл бұрын
Hi Esther. Usually you would add the load of each floor and each wall storey, then apply the whole load to the beam to work out the bending moment. Be careful here - always get your calculations checked by an experienced structural engineer. It's the masonry strength that's often the critical thing.
@destinym462
4 жыл бұрын
Great video.... in South Africa our second moment of area is in mm^2 , so what must I do in order to get my Ixreq to be in mm^2 ?
@RobindeJongh
3 жыл бұрын
To get from cm^4 to mm^4, just multiply by 10^4
@swimminglikeabrick
3 жыл бұрын
So this calculation for the second moment of area will determine the minimum size of the steel required, disregarding the universal beam calculator on skyciv?
@RobindeJongh
3 жыл бұрын
Hi Alan. Skyciv (free version) doesn't do a deflection check, only the moment and shear force diagrams. So you need to do this check to see if the beam you've selected in video 3 is within the allowable deflection.
@swimminglikeabrick
3 жыл бұрын
Right so the deflection check could potentially indicate that any particular beam selected could be unsuitable? So long as the deflection reading is below the second moment of the selected beam then it will be suitable?
@RobindeJongh
3 жыл бұрын
@@swimminglikeabrick The formula will give you the required I value. Check this against the value for the beam. The beam value needs to be equal or greater.
@samsmith1182
3 жыл бұрын
Thanks for this, really interesting videos and very informative. Do I need to get a SE now to do these same calcs for me to remove a wall and install the beam I have now calculated? Thanks very much.
@RobindeJongh
3 жыл бұрын
Hi Sam. You would need to involve an SE at some stage to either check what you have done or to do their own calculations. There are lots of other things to consider such as padstones, wall stability.
@samsmith1182
3 жыл бұрын
@@RobindeJongh ok, thanks very much, I'll contact one then.
@nasserashouri2528
3 жыл бұрын
Dear Robin, thanks for your very informative videoes. The only point that I couldn't follow was how did you calculate 2.24 for Ix? is it a constant? thank you
@RobindeJongh
3 жыл бұрын
Hi Nasser. It's a constant, worked out by substituting L/360 and values of youngs modulus into the deflection calculation.
@nasserashouri2528
3 жыл бұрын
@@RobindeJongh Thanks very much Robin
@nasserashouri2528
3 жыл бұрын
I have another question if you wouldn't mind addrssing pleas, What happens if two beams are used in patallel right next to each other instead of using one single beam? does the load capacity double up or does it get multiplied by a certain factor? many thanks
@mzuwt
3 жыл бұрын
Second moment area required (I) = (5/384) x (WL^4/Es x deflection) Es = Youngs modulus = 205x10^3 N/mm^2 Deflection = L/360 If the deflection is 12mm then enter the deflection as 12x10^4 this way your answer will be in cm^4. Enter the value for L in millimeters. Finally Robin's method works as well and obviously it's easier; for curious minds the calculations above should help.
@lukemarshall9267
3 жыл бұрын
Hi Robin, Thanks for the video. Where did the 2.24 come from Robin?
@lukemarshall9267
3 жыл бұрын
Just found the answer below!
@userjn-wv6xu
3 жыл бұрын
Hello Rob, 2.24 x W x L3 Which L? Is this the length of the beam or the length to be supported by the beam?
@RobindeJongh
3 жыл бұрын
It's the length of the beam.
@userjn-wv6xu
3 жыл бұрын
@@RobindeJongh thank you..
@alanjohnson9119
3 жыл бұрын
I wish to calculate 1 RSJ only to open up a load bearing wall max width 3 mtrs would your new book allow me to carry this out
@RobindeJongh
3 жыл бұрын
Hi Alan. Yes, the steel beam course would allow you to do this. See the course at geni.us/beamcalculations
@ashanurrahman6232
3 жыл бұрын
Sir please I want to steel beam full load calculation mathod picture or vedio
@richiejanukowicz
3 жыл бұрын
Hi Robin - can I ask why you're recommending the out of print version of the Structural Engineer's pocketbook over the Eurocodes version?
@RobindeJongh
3 жыл бұрын
Good question! Here in the UK the standards institution has adopted Eurocodes but the majority of structural engineers have stuck with British Standards for a multitude of reasons. Unfortunately book publishers superceded BS versions of their books with EC versions, even though they are not like for like. BS are easier for a beginner to get their heads around, which is why I recommend sticking with BS on this channel, though it makes little difference to what I'm teaching whichever code you wish to go with.
@richiejanukowicz
3 жыл бұрын
@@RobindeJongh Thanks for your response - I'm a very junior Structural Engineer here in the UK (after a career change) and just want to say I'm really enjoying your channel and informative vids. Please keep up the good work!.
@RobindeJongh
3 жыл бұрын
@@richiejanukowicz Thanks Richie - much appreciated!
@markr8604
3 жыл бұрын
Hi Robin - Can i ask, why do you prefer to use BS literature and not the Eurocodes versions? Is there a time frame of UK phase out of Residential design to BS codes? Just wondering if this gets picked up by building control and what their response would be? Thanks. Oh, and one final comment, you mentioned the book, chudleys, for specification. Do you know any good websites that off a specification template for residential as a starting point? Thanks - and great videos!!!
@RobindeJongh
3 жыл бұрын
Hi Mark. Good question! I prefer BS because it is prescriptive and pragmatic, and has stood the test of time, whereas Eurocodes are bloated, easy to make mistakes with, and hard for the beginner to decipher. BS are still widely accepted in the UK and I can't see that changing, especially now that the UK is outside the EU.
@markr8604
3 жыл бұрын
@@RobindeJongh having been surrounded by engineers for the last 15 years, they echo your thoughts. BS 5950 all the way!!! I honestly didn't know people were still designing to BS and that it was still accepted. I know you more or less get the same answers. Obviously partial safety factors a different, but I guess you get the same result given the utilisation factors/capacity within steel design. Really interesting. I have Chanakya Arya's Element design book, updated with eurocodes, but have always ignore the front portion as it was being phased out (or so I was told). I may just get it in writing from BC just so I have something. Appreciate the info!
@TheLuminousOne
4 жыл бұрын
Hi Robin - thanks again for another fantastic, valuable video. Regarding the 2.24 value, am unsure how this is derived?
@RobindeJongh
4 жыл бұрын
Good question! If you take span/360 and substitute it into the deflection formula, and take into account unit conversion, this is the shortcut formula you end up with.
@stevegittins6470
4 жыл бұрын
I was just about to ask the same. So is this a constant you use regardless of span?
@RobindeJongh
4 жыл бұрын
@@stevegittins6470 Yes, the 2.24 is a constant. What I have done is taken the values for E and span/360 and turned them into a constant to make the formula much easier to use.
@kalkvand
2 жыл бұрын
@@RobindeJongh Is it span/360 or span/400? My handbook says 400 But other sources including you go with 360 😅
@neilwilliams9494
3 жыл бұрын
Is the 2.24 * w * L^2 formula only applicable to a simply supported beam with a UDL?
@RobindeJongh
3 жыл бұрын
Hi Neil. That's correct. There are other formulas for other cases.
@neilwilliams9494
3 жыл бұрын
Brilliant thank you Robin. I don’t suppose there’s a chance of a video of some other cases? For example, if there was say a simply supported beam with 2 point loads. I suppose you could calculate the equivalent UDL that would give the max moment so the 2.24 formula can be used.. but if there are other simple formulas then that would be useful (if you don’t mind obviously)
@RobindeJongh
3 жыл бұрын
@@neilwilliams9494 It would be good to have you on the pre-release group for the course I'm creating at the moment: gum.co/kNpxfO In the group you will be able to let me know what topics you want in the course, and then have lifetime access to the finished course.
@garvitaswami5445
3 жыл бұрын
He'll sir i need this book
@RobindeJongh
2 жыл бұрын
💥Get the table with the values for this calculation here: geni.us/steeltables
@markwoollacott8402
3 жыл бұрын
Hi Robin, Great video and so well informed. It would be good if you tutored some real life examples of standard construction, flat roofs, concrete lintels, Catnics, structural timbers. Thank you for everything! The blue book section explained a lot, which was bugging me ....keep up the good work!
@RobindeJongh
3 жыл бұрын
Thanks for your feedback, Mark. Glad you found the tutorial useful!
@markwoollacott8402
3 жыл бұрын
Most definitely helped, this is also great CPD, I’m practicing now and really enjoying it. Just a few more schooled examples would be great. Suck a breath of fresh air to have these videos. What’s the 1.2xspan for, when selecting beam size in blue book. Why 1.2? Cheers
@RobindeJongh
3 жыл бұрын
It’s a factor for restraint at the supports, 1.2L + 2D.
@RobindeJongh
3 жыл бұрын
@@markwoollacott8402 Hi Mark. The 1.2 is a factor for effective length based on the degree of restraint at the supports. See pages 33-34 here: www.steelconstruction.info/images/0/0e/Sci_p360.pdf
@borabora7870
4 жыл бұрын
That pen writing sound killing me.
@scottnever8732
Жыл бұрын
so I sat through 4 parts of a video just to be told I need to buy a book?
@jmileshc
Жыл бұрын
Look at the online Blue book he used in Pt3 for the deflection, the tables he shows in the Structural Engineers book are there too. The SE book is worth having too though and The Architects Pocket book, among others...
@RobindeJongh
Жыл бұрын
Hi Scott. No, the videos gave you the process to design the beams without any books using pen, paper, and free websites. Can't get more generous than that. Get the books if you are serious about structural engineering.
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