Balanced | Under Reinforced | Over reinforced | RCC Sections

There are 3 types of RCC sections Balanced, under reinforced and over reinforced sections
In Balanced Section crushing strain in concrete reaches yielding of steel simultaneously, in Under Reinforced section yielding of steel starts first and than it reaches crushing strain in concrete, in over reinforced sections crushing of concrete starts first than yielding of steel.
In balanced section failure occurs simultaneously and is called balanced or critical failure.
In under reinforced sections failure occurs by yielding of steel and is called as primary tension failure.
In over reinforced sections failure occurs by crushing of concrete and is called primary compression failure.
Design codes prohibits over reinforced design as concrete is brittle and brittle failure will not give sufficient warning before failure because it is primary compression failure
____________________________________________________
IF THIS CHANNEL HAS HELPED YOU, SUPPORT THIS CHANNEL THROUGH GOOGLE PAY : [phone]
____________________________________________________
My Phone : amzn.to/311uFDW
Amazon Basics 50-Inch Lightweight Tripod with Bag : amzn.to/3ayCdkG
Laptop : amzn.to/3hi2yGp
Limit State Design of Reinforced Concrete Design by B.C.Punmia : amzn.to/315UEu2
Reinforced Concrete Design: IS:456-2000 Principles and Practice : amzn.to/315WLxY
Illustrated Design of Reinforced Concrete Buildings : amzn.to/349rM62
Design of Reinforced Concrete Structures : amzn.to/3142DYz
#underreinforcedsection #overreinforcedsection

[@anirudhparvatikar7990]

Explanations are clear and to the point. Thank u very much sir.

[@toshagrawal4629]

Hii when lets assume in T section which is under reinforced depth of N.A. from extreme compression fiber is 50 mm (maximum compresive strain is 0.0035) and depth of centre of tension reinforcement from NA is 500 mm(thus by compatibility of strain tensile strain will be 10 times maximum compresive strain) is that much strain allowed?

[@snehalrathod150]

Thank you sir , for teaching in such a nice and short way ......

[@direct_civilsite]

Hiii

[@kakidega6685]

Yes 🥰

[@direct_civilsite]

Are u snehal??

[@neethuraj5501]

Thank you sir... The concepts are cleared

[@structuralanalysisanddesign]

Welcome, all the best

[@shivatyagi4175]

Is under reinforced beam deeper when compared to a balanced beam section????

[@rajmanoj8345]

thank you sir this content is really helpful in this lockdown

[@structuralanalysisanddesign]

Glad to hear that, thank you so much, will be coming up with more videos, keep watching

[@abdulwahidturi4257]

All vedio u are presented is very fantastic vedio

[@structuralanalysisanddesign]

Thank you so much 😀

[@bhagyeshwadhale8101]

Sir, I want to do design structure so which software is good to design

[@amalasaseendran6113]

Thank you sir.This is very helpful to me

[@structuralanalysisanddesign]

Most welcome, happy to help, keep supporting

[@tulasiratna4405]

𝐓𝐡𝐚𝐧𝐤𝐬 𝐟𝐨𝐫 𝐲𝐨𝐮𝐫 𝐯𝐢𝐝𝐞𝐨 𝐬𝐢𝐫.

[@siyamali5978]

Thank you

[@SteelRCC]

Well done..keep posting on other topics

[@structuralanalysisanddesign]

Yes sir, coming up with analysis and design of all RCC structural elements

[@allanjonathan1349]

Wonderful video!

[@structuralanalysisanddesign]

Thank you very much! Keep watching and sharing

[@soranroshn7645]

الله یهدیك الی اصح الطریق

[@sudarshannikam5243]

Thanks sir , Your diagram is so proper that first time i could understand properly that how moves xu lim axis up and down in under and over reinforced section with proper reason.Thanks by heart..

[@structuralanalysisanddesign]

I am very happy that I made you understand the concept, support me by sharing with your friends, keep watching and keep learning, all the best

[@jigar_0072]

Very nice sir. Easily clear all concept and make more video... 👍👍👍

[@structuralanalysisanddesign]

Thank you so much Mehul, yes we are coming up with more videos

[@Vishalkoshta3000]

nise point to point explanation.

[@structuralanalysisanddesign]

Thank you

[@VishalKshettri]

Does 'Cr' mean effective cover?

[@prakulchauhan2924]

Which type of section give sign before fail

[@rajanalalalit1691]

thank you, sir...

[@structuralanalysisanddesign]

We are happy this video helped you, stay tuned for more videos

[@wadani4924]

What is critcal depth and actual depth

[@ravishanker2663]

Thank you very much Sir 🙏

[@structuralanalysisanddesign]

Most welcome, all the best

[@AnandKumar-pu6bp]

thanku sir

[@jitendrashah205]

What type of beam provide that may not failure and remain safe.

[@structuralanalysisanddesign]

According to IS Code it is stipulated to provide under reinforced beam

[@fayazkhan5186]

Thanks sir

[@structuralanalysisanddesign]

All the best

[@ethandkharofficial2804]

Sir what is meant by yielding of steel

[@devendrabagul84]

Thanx sir

[@structuralanalysisanddesign]

Most welcome, all the best

[@yimmytjahjono6262]

Please explain, in the case of under-reinforced beam vs the rest, how is it that the ability to visualize excessive stress in concrete beams is better that the ability to support such stress? Let's say an under reinforced concrete beam will start to bend to support 10 tonnes of stress, while the over reinforced beam will be able to support 12 Tons of stress comfortably, if the load is 12 Tons, how is the under-reinforced beam better performed when it clearly failed?

[@meleyotanoyeleke4800]

While engineers design against failure, I have learnt they design things to "safely" fail too. An under-reinforced beam failing on applied 10 tonnes load fails by yielding gradually, using up all the ductile properties of the steel in tensile region, this makes it easier to detect it's failing and allows engineers to act on correcting the structure before it completely fails. But a 12 tonnes capacity over-reinforced beam will fail suddenly if it exceeds capacity making it very dangerous to use.

[@aneetareddy9889]

🙂🙂

[@gamirambhul1847]

super sr

[@structuralanalysisanddesign]

Thank you so much, keep watching

[@chandudileep840]

Thank you sir

[@structuralanalysisanddesign]

Welcome, all the best, keep watching and sharing

[@440xavier]

Sir hindi me accha se samajh aata hai

[@wasiullah5623]

I think that over reinforce strain diagram suffle with under reinforce strain diagram.

[@shrawanshah8291]

Sir didn't get what is critical neutral axis

[@structuralanalysisanddesign]

its maximum

[@leeladhargadgil6029]

What will happen if I also provide steel in top side of beam in Over reinforced beam ?

[@structuralanalysisanddesign]

Dear first of all u should not provide over reinforced beam, and if its over reinforced section why you want to provide extra steel on top?

[@leeladhargadgil6029]

In this case, I'm still not able to get difference between all three sections. I meant to say is if I provide 3 bar in bottom and 2 or 3 bar in top also, will be that be an over reinforced section ? Does Ast play any role in deciding the type of section ? And in your balanced section, what if I provide 2/3 bars in top also ?

[@naveenreddy8501]

@@leeladhargadgil6029 then it becomes doubly reinforced beam, u should also satisfy the max percentage of steel reinforcement in beam I,e 4% of bd

[@VirendraKumar-pr4oj]

Nice sir ji

[@structuralanalysisanddesign]

Thank you so much

[@chandudileep840]

Could you please explain prestressed concrete sir

[@structuralanalysisanddesign]

Your request noted, will try to come up with some videos on this topic

[@ahtishamkakar6652]

Kindly clear that Area of steel is greater than Area of steel in critical section

[@JawadAhmad-]

Dear Sir, I want to talk to u

[@sathish2868]

Stress diagram

[@handsam5]

I would rather believe in real life demonstration (tested or proven) and what grade of steel they are using. rather than only on "THEORY".

[@rohitrajak4120]

sir agr engilsh me samjna hota toh ham book hi padh lete 😅

[@440xavier]

Sir English me samajh nahi aaya🤐

[@kasanadevesh]

not good

[@structuralanalysisanddesign]

Kindly you can make video and explain it in a better way

[@badAssfighter007]

in most cases when fe 250 is provided as compression reinforcement then it will attain its design yield point but in case of fe415 and fe500 steel,it is not possible WHY ???????????

[@VishalKshettri]

Does 'Cr' mean effective cover?

[@ramkumarv2874]

Thank you

[@structuralanalysisanddesign]

You're welcome

[@Manas_Gupta]

Thank you Sir 🙏

[@structuralanalysisanddesign]

Most welcome, all the best, keep sharing

[@Durgeshkumar-ip1ls]

Thank you

[@structuralanalysisanddesign]

You're welcome