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- เผยแพร่เมื่อ 27 ก.พ. 2017
- A short tutorial with a numerical worked example to show how to determine the reactions at supports of simply supported beam with a point load.
#SimplySupportedBeam #SupportReactions #PointLoad
Design to Eurocodes:
EN 1990 (EC0) - Basis of structural design
Design to Eurocode 1 - EN 1991 (EC1) - Actions on structures
Design to Eurocode 2 - (EN 1992 EC2) - Design of concrete structures including concrete bridges
Design to Eurocode 3 - (EN 1993 EC3) - Design of steel structures including steel bridges
Design to Eurocode 4 - (EN 1994 EC4) - Design of composite steel & concrete structures including composite bridges
Design to Eurocode 7 - (EN 1997 EC7) - Geotechnical design
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Thank you sir ❤
Mahid Sumandar you’re welcome 😀
@@Eurocoded there's a problem
Pinak Ganatra what’s the problem?
A beam 60m long is supported horizontally by vertical reactions at 1 end A and point B 40m from A.There is uniformly distributed load of 5km/min over the whole beam point load of 120kN at the middle point of AB and another point load of 80kN at the other end of the overhanging portion.Determining the reaction RA and RB
i almost died from the pen noise, but great vid
Haha. Now I use a different pen 😃
Mee to
Me too it was scarry
Same here bro
Hahahahhaa
Simplified presentation, always good for understanding.You are deserve to present more.All the best!
Thank you so much Sir. I was struggling in beam questions and your video has cleared all my doubts. Millions Likes for it !!!!!!!
You’re welcome.
I literally "felt" the pen and loved every bit
Thanks, I was suddenly can't figure out how to get the moment equations, you saved my life.
You are most welcome.
thank you. Just what i was looking for. The ratio for the reaction forces
You’re welcome
Am i the only one who loved the pen sounds lol thanks for this tutorial!
It seems like Ally 😃
No , they made me grind my teeth ... l don't like that sound
A simply supported beam AB 6m long has supports at ends A and B.The beam carries point load of 5kN at point c at 4 m from A and a uniformly distributed load of 2kN/m over length AC. Calculate
(a) support reaction RA and RB
(b) shear force and bending moment values at key points on the beam
(C ) Maximum shear force and bending moment values and their position
(d ) sketch shear force and bending moment diagram
The video is very nice.
It would be great if you upload more videos about calculating support reactions. Maybe more complicated ones.
Hi, Thank you so much for the great feedback. We will soon make more videos to show how to calculate support reactions. And we will include complicated loading scenarios.
how would you find the missing distance if one of the distances wasn't given ?
Is this a reaction "R= squareroot of the summation of squares of reaction forces vertical and sum. Frces horizontal" ?
This video will answer your question: th-cam.com/video/9QwivZK_Vfs/w-d-xo.html
Equation you have mentioned gives you a resultant force and it could be a reaction.
How did you get the 9 for RC I don’t understand ?
Wowwww this is amazing. Thanks so much. Exactly what I needed.
You’re welcome
I love your works, thank you
Emmanuel Okoro 👍🏻😀
Very helpful for understanding moments. Thanks!
You’re welcome
Love from INDIA
Dhanyawaad ( thank you )
You’re welcome 😀
Thank you my brother this was very exciting
unEDUCATIONIST 😃
how do I determine the maximum shear force in the beam
great content it was really helpful
As someone struggling to understand structural design just starting out, this was great. Thank you so much
Glad I could help.
Thank you so much! I've been struggling to understand on how to get the reactions on beams.
Don't skip the ads folks :)
Much appreciated 😀
Is this the same way of finding the magnitude of reaction forces
Thank you for your sharing information.
You’re welcome
Hello,
What value would the concentrated load be to make the support reactions zero?
0😃
Thank you. this helped a lot
Hi Isaac - you’re most welcome 😃
Very well executed.
thanks, helps me to re figure my previous subject.
BSM YTChannel Yes yes yes. Well done 👍🏻 and you’re welcome 😃
Can you make a video show designing slab with the column and double reinforced beam for house plan
Please any more videos of bending moment and share force with three support reaction?
How do i calculate the reactions of a beam including a self weight
excellent! you sound like you are from Sri Lanka!
Please how can one calculate support that is more than two
That was helpful. Thank you
You are welcome
Why are using equalbrium equation of all x action all x reactions
Hi, Is Anti clockwise for moments taken as positive according to Eurocode 3?
Also is the point load taken as the design load? As normally you'd have to multiply the load by a partial factor (given by EC3) to find the design load.
lot's of love from india ❤️ I understand the concept 🥰 thank you so much 🙏🙏
You are welcome 😃
@komalrani
Plz I need help
Would you help me ?
@@bestmatters2753 yes plz what the problem
@@tech.sis_ how did he get 9kn for the reactions
Thank you very much sir.. it really helped me a lot..🙏🙏🙏🙏🙏
You are welcome
The down ward force is equil to the reaction force upward
Force at A = 3/5 x 15=9N
Force at C = 2/5 x 15= 6N
Isn't this an easier method to solve the problem?
it should've 2/5 for A and 3/5 for B
can i ask why Rc is producing counterclockwise moment?
Check this out: th-cam.com/video/6SJiDkYkOLs/w-d-xo.html
This video really helped me a lot in my work thank you sir
You’re welcome
It is better to tell whether it is a statically determinate structure or indeterminate structure then you can tell the bounday conditions for statically determinate structures. Your points are ok but for a pinned joint support you should mention the horizontal reaction and how it is going to zero.
Sir can U explain what is the maximum load the crane can safely lift?
Ali Sej It depends on on several factors such as crane weight, distance from crane’s centre of gravity to tipping point, length of boom, ground conditions, etc. Do you know above parameters?
A beam has a total length of 15m, force F1=15N F2=7N which ends of the beam, where should we place the fulcrum, in order to be in equilibrium?
15kN / (AB + BC) = 3kN
3kN * AB = 9kN
3kN * BC = 6kN
Why make it so hard ?
JC Legend; 11B thanks you
SALAM bro from🇲🇦
Thanks 👍👍
You’re welcome 👍👍
Please how can calculate for dl and ll
How to find moments couples of given weight of the beam
just a quick question, how'd you get the Ra and Rc KN measurements?
I want to know this too. How do you come to 9kn from the other numbers available. I don't get it.
@@MrBooojangles same he doesn't show or explain how he come about 9kn
5 x Rc is equal to 45Kn
Therefore to find value of 1 Rc = 45 divide by 5
1 x Rc = 9
can i request with 3 point load?
Are there any other ways to solve the problem?
Questions is... A trolley wire weighs1.2kg per metre length. The ends of the Wire are attached to two poles 20 metre apart. If the horizontal tension is 1500 kg find the dip in the middle of the span?
A simply supported beam AB 6m length is loaded as shown below. Construct the shear force and bending moment diagrams and determine the value of the maximum bending moment
thank you very much
Hi Daniel - You are welcome.
Good attempt and a good explanation although. noisy pen yes but the main issue I have is that you explain the CW and ACW (CCW) say one is negative but don’t indicate it or put it in the calculation and use it. Missed step is all I’m pointing out. Have a great day.
Hello sir
How are you
I have a question please help to solve my problem,
Question- we have a hollow 8" iron pipe with 8 mm thickness, width of the pipe 6 meter
We are applying a load of 600kg on the pipe,
How will we know the suitable weight for our pipe?
What will be the moment of force at any point of the beam???
Tarak Nath Halder watch this video: th-cam.com/video/Xvg38nlxkOU/w-d-xo.html
Thank You sir.
You’re welcome
thank you man
thanks i have a structural analysis test tomorrow
You’re welcome. Good luck with your test
Thank u sir, it helps alot
You are welcome
Super concept
hi, what if the beam has its own weight? thank you .
Hi Adobong. If the cross-section of the beam remains unchanged along the beam, the self-weight of the beam is a UDL (uniformly distributed load). You can replace the self-weight of the beam (UDL) with an equivalent point load. Watch this video: th-cam.com/video/pbyFNJTivrk/w-d-xo.html
Eurocoded thank you :)
You’re welcome 😃
Hey,I just wanna know something
My teacher has explained this for 3 hours and I haven’t understood and you’ve just tought it me in 4 mins
👍🏻👍🏻
Useful video.
Thank you
A bean is 12 m long and is supported at right end and 1m from the left end point load of 80kN is placed 4m from the left end a load of 20kN is place in the middle and a load of 40 kn at 1m from the right end
1.calculate the reactions
2.draw a shear force diagram indicating all your points
3.calculate maximum bending moment
4.plot a bending moment diagram indicating all points
Very good video❤️
Jack Daniel Manzon thank you :)
very understandable
Just sum the moments about the reactions.
In other to way a child in a laboratory a uniform plank of wood AB is 3.0cm long, A mass of 8.0kg is pevoted about a point 0.5m from A. The boys stands 0.3m from A and the mass is placed 0.5m from B in other to balance a plank horizontal. Calculate the mass of the Boy?
Very helpful for my assignment question☺️☺️☺️☺️
Hi Rohit. Great. Let me know if you have any questions. Good luck with your assignment 😀
@@Eurocoded yes.i hve a question.how can I ask it.i mean any email id or something else
@@rohitnegi9430 You can post here or check the about section of my channel for the email address.
You sound like Arnold Schwarzenegger, cool vid
Thank you 😃
Same problem explain
How to find maximum bending moment
Hi Komal - We will upload a video soon covering how to calculate maximum bending moment using the same example.
W(L^2)/8
How to find moment about B
Thanks 👍 ❤
I have a problem please help
Can somone tell me how it works if Ra and Rc were not right at the ends?
Daryl Stephen do you mean you have two overhanging beam ends with the same loading arrangement?
@@Eurocoded I mean like what if RA was 1 meter away from the end towards the centre and RB was 0.5 meters away from the other end towards the centre
Would all the reactionary forces be equal if they are Symmetrical? I can't find a sample problem online for such a case.
The problem I'm working on has a distance of R1 > R2 = 6m ; R2 > R3 = 3m ; R3 > R4 = 6m
The thing that's bothering me is the 3m distance, would it make R2 and R3 different with R1 and R4?
Why is this in my recommended still at least I learnt something
wonderful
Kurutu Fm 👍🏻
Sir jisme niche se bhi force lg rha h vo kaise krenge
From google translate what I understand is that you are asking what to do when an upward force is applied to the bottom of the beam. Is that correct?
Its nice but need complecated ones and as well of all types of reactions
More videos coming soon 😃
simple and straight to the point
Thank you 👍
thanks !
You’re welcome
isnt Ra negative 6 ?
Hi Artika. R_A is drawn as a vertical upwards reaction. Calculated R_A value is a positive value. That confirms R_A is a vertical upwards reaction and drawn direction of R_A is correct. This is a simply supported beam and the direction of R_A is expected to be vertical upwards. This video might help you understand the concept: th-cam.com/video/6SJiDkYkOLs/w-d-xo.html
Are you able to mathematically calculate the collapse of WTC7?
Shawn Drumm I’m not sure whether you can calculate exact figures without knowing the imposed load effects. But certainly the structural failure can be explained.
Eurocoded Maybe it’s nothing to worry about then. It’s probably nothing, right?
Super teacher
what about the direction because it is the one that confused
Hi Njabulo - Watch this video: th-cam.com/video/6SJiDkYkOLs/w-d-xo.html
Thanks sir
You’re welcome Amar.
I just wanna get direct communication with you, I have found that you good in physics
Ali Haji You can use the email on ‘about’ page on my channel. Or message on Facebook.
@@Eurocoded A certain rod AB of length 10m is at equilibrium, the rod is supported at C and D ,if the support at support C is 100N and 500cm from end A and distance that separate C and D is 8m.Find the weight of the rod, find thrust at D?
Ali Haji is the rod simply supported? Is 100N the vertical reaction?
wouldn't that be a negative 15
Hi Jonathan - External force acting downward (vertical) considered to be positive. This results in upward (vertical) reactions. If the external force was negative then it would result in a hogging moment. Please check out this video about typical sign convention: th-cam.com/video/m9Ecdii47Fk/w-d-xo.html
Thanks
You’re welcome 😃
How ti identify if its clockwise or anticlockwise??
First imagine the point where you are taking moments is the centre point of an analogue clock face and then consider the beam elements to be clock’s hands. Now you should be able to figure out whether the force in question will rotate the beam (i.e. clock's hand) in clockwise direction or anticlockwise direction.
If it is still not 100% clear to you then please let me know. I will explain in bit more detail.
@@Eurocoded how to know the appropriate rotation for taking the summation of moments? Is it based on our decision if it is in clockwise or counterclockwise?
I am not sure I follow your questions. When a structural system is in equilibrium, the summation of moments would be 0. Typically clockwise moments are taken as positive moments and counterclockwise moments are taken as negative moments.
Check out this video where I talk about clockwise and counterclockwise moments: th-cam.com/video/6SJiDkYkOLs/w-d-xo.html
@@Eurocoded thank you😁
You’re most welcome 😃
hello sir i'm your channel's new subscriber .please make a video on how load transfer from slab to foundation
Ok I will try to make a video.
@@Eurocoded Thanku Sir
How did you get 9
45/5
💗
Really helped me out! But my teeth were 😬
Tq
You’re most welcome :)
How to solve a cantilever beam with point load and concentrated moment