Lec 27 - Torsion Reinforcement In Beams Design - IS 456:2000

[@iftiqarahmad8343]

sir upload lectures on cantilever and continous beam. i have watched all lectures of rcc. really amazing. nice work. thanks a lot.

[@adnanrasheed2920]

Excellent ❤

[@thammisettyvenkatrao7266]

Hi , could you please post the video on column design under torsional moment.

[@sudarshannikam5243]

Thanks Sir. Can we say couple acting on primary beam where the point of resting of secondary beam on primary beam. OR Are those same Couple and Torsion?

[@DCBAonline]

Yes if secondary beam is connected to primary beam integrally, the secondary beams puts a torsion on primary beam at the point of contact.

[@sudarshannikam5243]

Thanks Sir 🙏🙏

[@DBDBSAJHAR]

very helpful video

[@sathiyascivil1987]

Very useful video sir.

[@collelector5972]

Thank you Bhai!

[@sudarshannikam5243]

Sir , Does beam can be designed Doubly Reinforcement at near support (for Hogging Moment) in case of fixed end condition? OR Should we design doubly section only for span moment where sagging moment occurs ?

[@DCBAonline]

The reinforcement in a continuous beam is carried at both top and bottom, but it is given according to the reinforcement designed at the respective sections i.e support or span.

[@sudarshannikam5243]

Thank Sir. Can we use that under reinforced or over reinforced phenomena for beam occurs - ve moment (Hogging) i.e. fixed beam at end support or cantilever which have reversible forces means Tension at top and compression at bottom? Generally we used this theory for beam section having +ve momemt i.e Comp. at top & Tension at bottom.

[@shubhamsaurabh8353]

very nice lecture

[@sanjaybhat4694]

Hello could you please tell , where or which clause in code book did you find the ast and asc formlue?

[@nabinbista4213]

thank you so much helped a lot to understand

[@saurabhvidhate8533]

Sir from which concept formula for (moment due to torsion =Mt and shear due to torsion ) will come ??

[@crisolannarienza9064]

Good day, sir. How do I calculate or solve for Tu if given is a torsional moment of *kN.m dead load and *kN.m live load? Hoping for a response, sir. Thank you.

[@centlytical]

I know it's late but you need to factor out the live load and dead load using the load combination specified by the code example 1.2D.L +1.6 L.L

[@ajitkurey5225]

Sir your video is so good just tell me how can we calculate Tu for beam is IS code recommended any formula

[@DCBAonline]

Tu comes from analysis of structure, it is generally due to secondary beams on primary beams.

[@abhaytalathi2929]

👍👍

[@pauldaniel3989]

How to find Xu for designing singly reinforced section

[@saurabhvidhate8533]

Sir when we design a beam for torsion with today's steps then no need to again design for bending and shear separately ??

[@DCBAonline]

Yes

[@saurabhvidhate8533]

@@DCBAonline how sir we consider shear force and bending moment in torsion design steps so why we need again design

[@DCBAonline]

You asked no need to design so my answer is yes, we dont have to design

[@saurabhvidhate8533]

@@DCBAonline ok sir

[@flyingk2488]

Please sir make a video on torsion of beam ( numerical)

[@DCBAonline]

Its already made, check the next lecture to this.

[@civilspectrum24]

Is this channel for competitive exam, sir can i study for gate exam here,

[@DCBAonline]

Yes for structural subjects

[@karneshwetha6630]

when there is effective cover why to assume it as a clear cover ?

[@cadm-benzbuft21]

under what condition there is no tortion on beam??? does beam have tortional moment if it diesnt have secondary beam in between?

[@DCBAonline]

Yes why not, will depend on what type of loading is put on beam.

[@akshaydev5898]

Don't we have to convert the moment values to factored values..?🤔

[@DCBAonline]

If the load considered is factored then no need to factor the moment.

[@GomatiGoswami-YearBArchArchite]

sir, yeh Es and Fsc wala table kaha se milega IS456:2000 me?

[@DCBAonline]

IS 456 me nahi hai, koi ache author ke reference book me mil jayega.

[@GomatiGoswami-YearBArchArchite]

@@DCBAonline sir, el aur doubt tha - Asc = (M_t-M_u)/((0.87fy-0.446fck)(d-d^1)) yeh formula diya hai prof ne class me

[@DCBAonline]

@@GomatiGoswami-YearBArchArchite unse puch lena kaunse reference book me diya hai.

[@GomatiGoswami-YearBArchArchite]

@@DCBAonline sir but is456:2000 me toh Asc= Mt-Mu/(fsc)(d-d') - aapke formula me fsc-fcc kaise hua sir?

[@tejasbhokare9457]

It's in SP 16 BOOK

[@ranjitkaurjaswal]

In bt why we took 30 in bt=300-30*2-20*10-16

[@DCBAonline]

bt = 300 (width) - 30*2 (subtracting clear covers) - 2*10 (subtracting link from both ends) - 16 (subtracting half of bar dia from both ends)

[@GomatiGoswami-YearBArchArchite]

Sir ismai side face reinforcement calculate nhi kiya

[@DCBAonline]

The depth is less than 750 so it wasnt required.