Welding, Lapping, Coupling of Reinforcement in Column and Slab - Which is Best

[@Ameetk369]

sach me mahesh bhai apke jaisa detail me koi nahi samjhata youtube pe... kyunki bahot sare log hai jo chanel chalate hai lekin itna detail me koi nahi jata... bahot log sirf basic me ya defination me lipta dete hai magar apki video sab ke liye sikhne jaisi hoti hai... mai har video dekhta hoon aur samajhta hoon... kyuki mai infra me kam karta ho to mujhe bhi kayi sari problems aati hai magar apke video se problem solve hoti hai... so pls keep doin these videos ... makn ek suggestion dena chahunga ke ho sake to residential ke sath me infra ke components ke upar bhi video banayiye bahot acha hoga...👍👍👍👍

[@rajendrakalura.8770]

सर जी नमस्ते, बहुत ही अच्छी जानकारी दी है आपने, पहली बार ये कपलर मेथड के बारे में पता लगा है, और ये भी पता लगा है वेल्डिंग नुकसान दायक हो सकता है भले ही दिखने में मजबूत हो

[@SohanLal-ci3gx]

Overlapping provides proper compressive strength in vertical members if laping length is proper.Coupler joints make members in situation but not stand for strength , rebar and coupler bonding may not yield.

[@nayanjyotisaharia7420]

Very Informative Video Sir...Thnxx For The Knowledge....Hamara Ghar Banane Ki Baat Chal raha Hai...Yeh Video Bahut Helpful hoga mere liye

[@ankurbhaker786]

Precautions while using couplers: • The threads that are being developed on rebars by automatic threading machine must be observed that their length should be appropriate i.e. if the length of rebar coupler is 90 mm so the length of threads should be 45 mm in case of type-1 couplers. For inspection we must deploy an inspector at the steel yard whose duty should be just to inspect the length of the threads in lot of reinforcement before dispatching to the site for installation. • In case of type-1 threaded couplers, the inner threads must be made with a die instead of a lathe as the depth of the cut can be varied by later type of production. • The Contractor may try to hide the excessive threaded portion length on rebar by unacceptable means. Like in one instance, a contractor tried to use cutting disk to grind the excessive threaded portion and then after application of oil used sand to hide the shiny surface. So while inspecting the couplers the excessive length of couplers must be demotivated. • For the quality of reinforcement production at steel yard a full time QC practitioner should be deputed with sufficient experience in terms of reinforcement production for mechanical splices. • The Contractor must evaluate the quotations from different suppliers in terms of cost, quality and timely supply of the product. The approval is granted by the Engineer by thoroughly going through the technical performance certificates or test documentation commenting on the couplers. • The reinforcement bars must be cut by rotatory saw instead of cropping machine. The use of cropping machine results in an inclined end instead of being 90 degree cut therefore in order to engage fully the length of splice coupler the cut angle must be 90 degrees. • For lubrication in the automatic threading machine, only approved lube should be used and no cheap products or water should be used whatsoever. The quality of lubricant would have direct impact on the thread cut otherwise they would be damaged and would be irregular which not a good practice is. • The threads produced on the reinforcing bar must be checked in terms of pitch depth and accuracy. Pitch measuring tool or any other suitable tool might help in determination of suitability of the produced thread.

[@Vamshi-k]

Io

[@engr.asadallahrakha8738]

Bro if we have to maintain so much things then lapping is best😂

[@er.gurlabhsinghgill8254]

Best explained....please suggest some references to authentic literature/code for future implementations...thanks

[@shreekanthraja1133]

Thks a lot for sharing your experience and me too like you at work place very sincerely as the way you explain above

[@rohandoon1235]

Can we contact you

[@k.p.s.1959]

बहुत सुंदर जानकारी :- सकलानी बिल्डिंग कन्स्ट्रक्शन

[@pravinshaha5475]

Coupling is the best 👍 as per my 45 years experience in Mega Engineering Structure Pravin Shaha, Chartered Engineer and Government Approved Valuers

[@raghubanshprajapati5307]

@SP CREATION'S kitna price hota

[@BilalAhmad-vl1oz]

Main Saudi Arab main kaam karta hou jis building 🏢 main hum kaam karty hai os main Pora Coupler ka System hai Pory 53 chaat bane ge. So i think coupler joint is 100% best than others joints I am from Pakistan and watching your video from Saudi Arabia . Great work 👏👏

[@sampathr2]

Really wonderful explanation. For a layman like me, it is explained in simple and short. Tks for sharing.

[@rahibulhoque4397]

Rahibul

[@wajid699]

We always do lapping..coupling to pehle bar suna hai...fir bhi good video sir

[@ImranSharif-z3t]

he said lapping is ok till M16 ABOVE M16 BETTER USE COUPLER, WELDING IS NOT GOOD FOR ANY CONDITION. THANKS

[@sanjaysrivastav3333]

Lapping is best. Coupling is very careful work and it needs skilled worker and sincere supervision. Needs threading which will take extra cost. So work may be delayed. More need of coupling is best for complete load transfer without eccentricity.

[@lovekeshsanwriya4597]

वा भाई ...भाई ने कुछ नया किया 👍👍👍

[@aishyadavvideos]

Always explain in a good manner .

[@mokbulhossain5926]

ঈশ্বর ঈশ্বরকে,

[@nagaraj5338]

Good innovation by using cupling method, super saver

[@rahilshaikh439]

Sir cupling best option hain you right and thanks

[@rameshwarbeldar3534]

अप्रतिम माहिती सर 🌷🌹🙏🙏

[@kanhaiyakumar-ur7rc]

Very very important video sir❤️

[@ManishPuri]

Good information bro

[@manits3547]

Welding is acceptable with both sides welded in double layers duly chipped of. In this case the overlap will be normally 10 X Dia. of Bar or as per Designer's specification. The Weld is further subjected NDT / X-RAY confirmation for perfect welding. But Weldind is not unacceptable under any circumstances.

[@Ranjeetkachhwaha]

First time see its important video Thanx Sir

[@shyamchaudhary.3359]

We are using lapping , in coupler use less steel but lapping is best, more stronger than coupler....

[@moharsai5278]

बहुत अच्छा जानकारी है सर

[@skumar1014]

In your next video- 1. Explain cost advantages of handling of heavier bars due to lapping, cost of additional handling due to threading machine. 2. Cost of threading machine, Cost of threading per bar and productivity of machine 3. Labour cost savings if couplers are used

[@dipalmehta4313]

Also cost of testing 😂

[@abdulmahboob3612]

Achcha vedio apne banaya bai .bohth impotan apnne pathaya . Sukriya .

[@londonoxfordstreet]

Boy, You are Excellent!

[@saravananpaddy798]

Very useful tips👌👌👌

[@mr.moktanvlog2753]

Over lapping is commonly used in building construction. So in my opinion lapping is best to transfer the load one bar to another bar

[@motipatel615]

Wah news great job sir....

[@viralcat-w4x]

Couplers are the best regarding strength, serviceability, ductility, and stiffness. Past research also shows that the stiffness of the coupler splicing region is even HIGHER than that of a continuous reinforcement due to the cross-section enlargement at the coupler location.

[@bk.gyanesh2553]

Very very nice information thank you sir ji 🙏🙏🙏🙏🙏🙏

[@RNGunding]

Very informative. Thanks.

[@borntoride2209]

lapping is best because cost is not important than life of people.. lapping has given instructions in is codes 50d for slab , 24 to 40 d for coloumn , for beam tension 45d, compression 24d and the distance center to center of lapping length should be 1.3 times of lapp length

[@esportzgaming1140]

More than 36 mm ?

[@AmanKumar-sf8it]

WONDERFUL EXPLANATION

[@janardhanreddybanala3778]

Vertical bars coupling is ok what about horizontal bars coupling is acceptable or not ?

[@vijaykumhar9403]

Good question

[@Amit-yb4sd]

Sir for horizontal joints lapping is recommended

[@janardhanreddybanala3778]

Amit thank you 🙏🏻

[@Amit-yb4sd]

@@janardhanreddybanala3778 sir lapping for horizontal bars can be done only in columns, other than column, lapping cannot be done in the middle of the beams, so couplers dont work ...

[@brijeshsharma4325]

Yes gud question

[@civilengnepal]

learn everyday ! very good content sirji !

[@SohanLal-ci3gx]

Only over lapping is effective.other aulternates like welding , coupling,the vertcal element(column) may shear up, horizontal element( beam) may effect tensile strength as well as compressive strength.

[@borntoride2209]

nice video brother good coupling is also good it reduces cost but i cant feel safe

[@chttaranjansarkar4098]

Lapping ache

[@ShyamPrasad-A-Love-S]

So super very nice video 👌❤️🌹👍

[@mukuljha804]

GREAT INFORMATION.THANK YOU SIR JI.

[@lotsofgaming9207]

Sir very useful good information

[@maheshj660]

Sir , In case coupler joint came in beam junction or slab area is technically wrong ???

[@bikramjit15]

Thank you very much Sir 👍👍👍👌👌👌😊😊😊

[@jaimabharti9182]

Lapping is best.

[@rai_vloger5290]

Tab shyad apne video nhi dekha

[@aamirthesinger0007]

It depends

[@basimmohammad5299]

Upto 36dia

[@vertexmalakar]

Tino best hain bash sahi jagah sahi terike se karna chahiye

[@ak_homes_design]

Useful Video Sir .......

[@jaydevmandal4416]

Coupling is best

[@saileshsingh1]

You always bring practical and great topic! Thank you from Bottom of my heart.. Can you plz bring something on topic FAR.. Jaye Krishna Janma Asthami! Thank You. Shailesh Singh

[@LearningCivilTechnology]

Sure... Jai Shree Krishna

[@ishadulhaque3130]

1st Lapping is best and strong 2,rd over Steell lapping is good but not using the bending oir the over lapping Steel welding is a very good option and strong 👍 I am Ishadul building construction senior worker from the Kerala 10 20 30 40 floor building overlapping Welding system work

[@biswapramanik221]

I love you sir ji ❤️ important education

[@Merabharat9254]

Very nice technique

[@prabujayk]

daily I am watching your videos. I learned lot of information in your chanel. In this video Can u please explain how we can threading for tmt steel ? Threaded steel Is readily available in market with coupling?

[@zohebimran7593]

To use couplers,rebar should be forging and treading. For basic couplers, its 2 type of treading half length of couplers tread in rebar its called type A. Full length of couplers treading in rebar its called type B. Type A for vertical bars n B is for horizontal bars.

[@Life_is_Awesome_Civil]

Very nice

[@LearningCivilTechnology]

Thank you sir 😊

[@ajayhaldwani5850]

Coupling available hai market main sir best idea coupling

[@kolamallik5185]

Good explanation. Thank you sir

[@rsd6317]

Coupling- Cost of making threads ? How far it is economical and practical?

[@LearningCivilTechnology]

Soon video will come

[@naukheznomani2792]

Case of Heavy dense reinforcement work can use self compacted concrete or smart dinamic concrete (Japan technology based). And in which use hammering instead of vibrator.

[@Tour_and_Knowledges]

For couple we need to get rod threaded that can also increase cost

[@Sneha1235-u2q]

And also take time.

[@abhishekthakur8573]

Kya baat hai sir mauj kar di fir se

[@Boss-gk8kc]

Hi I really enjoy your videos. You explain things very well. I have a question; what if lapping method is used but the bar is not bent to make stagger ie it’s just joined straight , is that safe? Is it ok according to IS code ?

[@rahulbadgandi]

No boss

[@KaushalKaushal-wu9lb]

Popular ek hi Jagah joint Hota Hai

[@SurajKumar-rw7gd]

You are great👍

[@karthikgowda3530]

High pressure gas welding is the best and cost-efficient

[@हिन्दुराष्ट्र-ङ3ण]

बढ़िया जानकारी

[@abhikhatri5414]

Coupling is recommended for column and lapping is recommended for beam but not coupling and also welding is not recommended for either of ...

[@sanmukhchauhan1668]

Very good idea bhai

[@henrykharnaior5786]

Lapping is the best coZ we are in the quake zone 🙏🙏🙏🙏coupling is dangerous

[@अजयकुमार-झ7फ4ल]

.

[@sameerbabu1856]

Very good video Sir

[@taringsanjay9846]

Make a vedio on estimated comparison on this top

[@LearningCivilTechnology]

Video banaya hua hain

[@aishyadavvideos]

Excellent explanation

[@simrankaur-nx3wr]

Amazing sir 🙏🙏

[@davidrajumamilla125]

Lapping is Right

[@Joker-gh2eh]

I am Muslim from Bangladesh, you are great explainer

[@raushankumarjaisiriram8188]

सर रड में गुना के लिए बताएं,,👍👍

[@FilmiBate_2.1]

गुना मतलब ??

[@RizwanKhan-we9rr]

Yes sir coupling is very best option

[@virandergoswami1811]

What if dia of same vertical bar is to be reduced in case of columns for upper storeys....will coupling work?

[@LearningCivilTechnology]

Yes

[@khajaismailmohiuddin2925]

@@LearningCivilTechnology but it is very complicated and difficult task to make threading for both Lower and upper bars.what is the solution?

[@akkatfiresafety8567]

Very good information .Thanks

[@yashaggarwal7105]

Coupling may be good for column/pillar but not for horizontal beams

[@travelguide786]

Correct

[@Standwiththehindus]

Thank you for the valuable information. Jai Shree Krishna

[@ArchiDesignHub]

Lapping, ❤❤💯

[@subhamkundu620]

Really good explanation sir, I liked it. But I had a question that does coupler is a good option in terms of stability of the suructure.

[@pynzkurbz3796]

I don't think so

[@nanduxyz6169]

leping is tha best option 👌👌👌👌

[@AakashDudwe16]

Lapping my best👍💯 choice system

[@rurutarkar8203]

क्या सभी साइज की स्टील मैं कपलर use kr सकते है ????

[@shuyebsiddiqui8727]

Good information sir

[@samj923]

Welding in image is worst and wrong construction.. Lapping is the correct procedure to increase height

[@khudirammunda5927]

Coupling is best 👍👍👍

[@arunannamalai7035]

Welding is not recommended for reinforcement lapping as it alters the material properties of the reinforcement due to heat produced during welding. Also there is reduction in the cross section of the reinforcement

[@jahirabbas2732]

Very good explanation

[@satyaallidona]

LAPPING IS BEST

[@shayekchowdhury8189]

😂

[@khawlajamshaid5303]

Very good sir thank you

[@nakulakoushalya6976]

Lapping is right

[@manmohannegi3062]

coupler is good or no?

[@ManishPuri]

NYC bro

[@borntolive2097]

Very informative video..will wait for your next video of price comparison between using couplers and providing lapping length for higher diameter steel

[@rupinderkaur8164]

Nice video good knowledge

[@faheemahmad945]

I hope lapping is best for safety

[@suhanisingh3770]

बहुतअचछीतरहसेसमझाए सर

[@sonushahjahan5446]

Dear Sir 1 Question hai Sir Difference between Pile Foundation And Raft Foundation 2. Question. Pile Foundation And Raft Foundation which Area me karte hai. Please sir Give me Ans.

[@vikashkumargupta3955]

Q1) pile fondation:- below the ground level and used in breeze but Raft or mat foundation both are same used in appartments.it is generally used in that area where soil strata has low bearing capacity.

[@q138mahtorahul4]

Thanks bhai ❤❤❤❤❤

[@shahidulislamshumon4383]

Thank you. I want to know about DPC. Please do a video on DPC.

[@laxmanrajofficial3389]

Bahut achhi know sir

[@manasmohanta7355]

Drawback in coupling is to makeing thread on steel bar in leathe which is costly

[@ImranSharif-z3t]

very nice explanation keep it up. regards

[@Ritesh_kumar_007]

Sir, share something related to highway engineering also.