Basic Rules for Lapping length in Column - Lap length in RCC Column || By CivilGuruji
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Basic Rules for Lapping length in Column - Lap length in RCC Column
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In this video Er. Akash Bohare & Corporate Trainer of Civil Guruji (Civil Engineers Training Institute) is Explaining About Basic Rules for Lapping length in Column - Lap length in RCC Column
When we provide lapping in a column, all the rebars should be lapped in zone-B as shown in the drawing. The top and bottom portion of the column, i.e. zone-A ( L/4 length ) should be avoided as there will be a maximum moment in this zone due to lateral forces acting on the column.
If the length of the column is L, then the L/4 length from the top & bottom of the column is categorized as tension zone A and the center L/2 length of the column (zone B ) is considered a safe area for the lapping purpose.
All the bars that are lapped should be staggered within zone B as shown in the above drawing. In any case, not more than 50% of rebars should be lapped in the same level. If all the column bars are lapped at the same level, it leads to failure of the column.
The spacing of the stirrups in the lapping zone should be minimum when compared to the regular column c/c stirrup spacing.
If the designed regular spacing for the column stirrup is 175 c/c, then the spacing of stirrups in the lapping zone maybe 150 c/c or 125 c/c as according to the column design.
As per IS code, if the bar diameter is greater than or equal to 36mm, then you should consider welding those bars instead of lapping. If welding is not possible, then you can lap these bars with an additional spiral of 6mm bar at the splice length.
For the rebars of diameter greater than 12mm, you can consider providing a joggle of 1 in 6. That means if the bar dia. is 20mm then the length of the joggled part of the bar can be calculated as
J = 6 ×Diameter of rebar
= 6 × 20mm = 120mm.
When we tye the rebars in the lapping zone, the joggled part of the bar should be placed over the inner surface of the bottom bar (as shown in the above drawing ) to get a uniform clear cover from the concrete surface.
If you tye the joggled portion of the rebar over the outer surface of the bottom bar, then the lapping zone invades the concrete cover area provided for the bars.
Пікірлер: 373
Best way to learn laping.....very ease explanation.....thank you so much sir......aise hi direct site se hi video laate rhiye sir jo important hai construction me Hum engineer k liye....aur sath hi jo pdhai kr rhe hai usko bhi visualize tarike se smjhne ko milta hai.....♥️♥️
@Civil_Guruji
3 жыл бұрын
Lilesh ji thank you... Bilkul apke learning ko hamesha badhane k leye Civil Guruji apke according videos laate rahega.... Keep learning keep sharing
Sir you are really a experience holder. I am happy that i am your subscriber. I hope you will continue to bring such videos.
Impodent vedio.... shaander vedio sir🙏🏼🙏🏼 tq civil guruji
Many concepts clearl just in one vedeo,thanks sir.
@Civil_Guruji
3 жыл бұрын
Amarendra i feels good to hear that keep learning keep sharing
Tq sir for sharing ur precious knowledge to us
excellent column bar lapping length calculation & rules #👍👍
Thank u sir ji for valuable information 🙏
Thank u so much for giving your valuable time i think this video is valuable for everyone..
@c42c1
3 жыл бұрын
I am thankful for knowledgeable video. I have one query , I am constructing house there is column shifted in retaining wall while basement shuttering , now ground floor column is out now rebar should be from basement or Frist floor level. Which is correct one.
Sir i liked your teaching. Your videos always be a complete informatable videos
Thanks sir you are doing great work
Love u sir for ur concept ...all doubt clear...
@Civil_Guruji
3 жыл бұрын
Thank you Ujjal.. Bahut acha feel hota hai ki aap sab apni learning ko le kar aahe badhna chahte hai... Ise tarah se aage badhiye Civil Guruji hamesha apke support k leye hai...
Qty of Rate analysis in excel per video banaiye sir
@vikaschourasiya6542
3 жыл бұрын
Please sir
@Civil_Guruji
3 жыл бұрын
Shubham is topic par video available hai.. Please go on playlist to check
@shubhamshegokar
3 жыл бұрын
@@Civil_Guruji Thank you sir
But U r provided lap on L/4 junction. As per rule lap are provide after L/4. Means =3200 clear distance then we provide lap above 800mm means 800+lap length
@Fun_Tech_GK
2 жыл бұрын
you are right..... but in this video it shows lapping in non lap zone it's wrong.....
I am a diploma civil engineer from 1968 batch , and wish to suggest so many my experiences to society of engineers.
@sahilpatel7308
2 жыл бұрын
Can you please share your experiences.? It would be helpful to us
@rickmorthy4576
Жыл бұрын
Please help share us some of your knowledge
Column is the most important part of structure
Thanks sir....khup mast details sanghitale lapping zone
Thank you very much for your nice and fàntastic video .
@Civil_Guruji
2 жыл бұрын
Jayanta thank you for your words... Keep learning
Ap ne Bahut achhe se samjaya
Sir, Kindly make a video of tolerance limit of plumb of various components of R.C.C.members with reference to I.S. Code.
This one is mistake bro...lap should be at the mid section of the column. I mean rod must be cut at h/4 + lap length from the plinth beam. However, in this case, lap is not at the mid section.
@anuragkhati4547
2 жыл бұрын
Wahi to 800 mein hi lap kar dala isne ,
@ahmedzohair9905
2 жыл бұрын
Lap should be in zone B. Either in mid or up and down but shall not enter in zoneA, that is L/4 from top and bottom
@Adarsh_Yadav1
Жыл бұрын
yes bro he made mistakes
@shadikansari7505
Жыл бұрын
Sahi bola bro, ye to khud hi galat sikha raha hai logo ko
@musarratrazakhan4389
Жыл бұрын
True👍
thanks for each lecture
Good detailed video.Thanks
GOOD VIDEO BROTHER KEEP DOING
Well done Akash bhai ✅
Bottom portion se kaise lap ho skta hai...ek to galat bhi pdha rhe,upar se itna confidence..bhagwan bchaye civil engineers ko civil guruji se
Sir please use imperial units as it is more convenient for engineers as well as clients.
Excellent concept
Good analysis👍
Pranaam Civil Guruji. Please make video on Shuttering of Stairs
Very informative and useful post subject to lap, please upload next video so that purpose of this video will be best, don't delay.regards.
Sir gajab kya explain kiya Meri nazre nahi hati 11 minutes tak
@Civil_Guruji
Ай бұрын
Thanks for the love, @user-ld6oh7fz6k! 🌟 Khushi hai ki aapko video pasand aaya.
Sir this video very helpful
Masha allah. Great.
informative ..thank you
The top most important learning platform is here for civil engg.I can guess that how much your team is dedicate,passionate to provide the knowledge to others that's why the channel has not been monetized till now.U r Great Sir. 🙏🙏
@kaakib8841
2 жыл бұрын
O course bech k paisa chhapte hain... Sab business hai
excellent video sir aap ke jaise teachers agar collages main ho to desh ka cehra badal jayega.
@Civil_Guruji
3 жыл бұрын
Maruti ji thank you for such a lovely comment... Hume bhi bht inspire karta hai apka support.. Keep learning keep sharing
Very good lecture
Thankyou so much sir
@Civil_Guruji
Жыл бұрын
Welcome😊
Vrry good information
@Civil_Guruji
4 ай бұрын
Thank you for appreciating our content! We're glad you found the information helpful. Stay tuned for more valuable updates.
thanks ❤ for nice sharing
ZABARDAST G ♥♥♥♥♥♥♥♥♥
@Civil_Guruji
Жыл бұрын
Thank you Irfan Gul Hame bohat khusi hai ki aapko hamari mehnat pasand aai , Civilguruji isi tarah civil engineers ko aage badane ke liye mehnat karte rahega aur aap bhi knowledge dusro ko share karte rahe. KEEP LEARING, KEEP SHARING.
Shukriya sir ji aap ek footing se lekar slab tak ka single video banadijye with full details
Want to see more video sir......
@Civil_Guruji
Жыл бұрын
Watch this Video kzread.info/dash/bejne/dGSF2c6bXZfek5c.html Hope this Video Will help you.
Aapka vedio bht hi ACHA hai.. Great knowledge ke saat
Good explaining...👍👍👍👍
Well done 👍
Great information
Thanks for sharing❤
@Civil_Guruji
11 ай бұрын
Thank you for your comment! We appreciate your support. We strive to provide the best Knowledge for civil engineers,
Sir ,Please make a video quantity of reinforcement of Column
Wow awesome video
Very nice video
@Civil_Guruji
3 ай бұрын
Dhanyavaad! Aapka samarthan hamesha humein prerna deta hai aur hume encourage karta hai. Aise hi hum aapko informative aur helpful content provide karte rahenge.
Clear Height between plinth beam top and roof beam bottom-11 feets Zone-A-11/4=33 inches Zone-B-11*12-66=132 -66=66 inches There are 6 bars 16mm@4,12mm@2 At zone B top- 2 no of lappings At zone B middle(30 inch below top lapping points)-3 no of lapping At Zone B bottom (30 inch below middle lap point)-1 lapping Whether the above arrangement is allowble? Whether lintel tie beam can be provided any zone? What if lintel tie beam falls on zone-A top area?
धन्यवाद सर
@Civil_Guruji
Жыл бұрын
Most Welcome
Sir very good helpfull
Could you upload a video how they make the jackle aligned? I keep seeing the crank/jackle getting out of alignment each time the stirrups/ties is fitted on the column.
Sir if the beam is setting eccentric except the center of the column then what should be the size of the column at that time.
Thanks sirji super video
Sir, favourable and Unfavorable Bond condition ki ak video upload karia sir, it will be very helpful for us... (IRC 112-2011) Where Lape Length is varying.. according to Bond condition...
Thanks for the video sir 9:49
@Civil_Guruji
Жыл бұрын
Most Welcome
Happy to see you
@Civil_Guruji
3 жыл бұрын
Puzara keep learning
Nice information
Excellent.
Come with some beam Reinforcement details also sir from site.
Sir cover black ke upar video banaiye sir
@Civil_Guruji
Жыл бұрын
Hello Shashank Rajput Please watch this video kzread.info/dash/bejne/fYGOq7ptopTZhLQ.html Hope this video will help you.
Road survey ke upar koi video banaye sir l humbly request only for uuuuu not ur another team because ur voice is 100 % understand.. So please sir.. Make a video related on road survey.
Nice.. Tecnical view
Yes, i want more video related to site visit.
Nice lecture sir
Very good sirji
@Civil_Guruji
3 жыл бұрын
Thank you Devji
Daubt sir ji... 1. Lap/splices column k centre (L/2) me hi kyu dete hain? 2. Or 50D hi Q? Lap length? 3. Joggle dete wkt 1:6 slope pe modna q jruri hain?
If the only 40cm length available above the ground floor slab column. Can you please advice me about the lap lengths is ok for the first floor to second columns.
Very nice 👍
please make a video on cheak shear force in beam so we can evaluate our beam is safe or not, without using is code
What will be the length or ratio required for Lap of joggle / what will be the joggle length ?
Good information
Thank u so much.......
Clear Engineer 😀👍
Thanks sir
@Civil_Guruji
Жыл бұрын
Welcome acting lover himansh10 Hame bohat khusi hai ki aapko hamari mehnat pasand aai , Civilguruji isi tarah civil engineers ko aage badane ke liye mehnat karte rahega aur aap bhi knowledge dusro ko share karte rahe. KEEP LEARING, KEEP SHARING.
Thank you sir
Good
@Civil_Guruji
Жыл бұрын
Thank you chandra shekhar mahto Hame bohat khusi hai ki aapko hamari mehnat pasand aai , Civilguruji isi tarah civil engineers ko aage badane ke liye mehnat karte rahega aur aap bhi knowledge dusro ko share karte rahe. KEEP LEARING, KEEP SHARING.
Sir, plz make a video on beam column junction as per IS 13920....
Sir pls make a video aboy Types of steel and which is best for consideration?.
Namaste 🙏 Nepal 🇳🇵
Very nice
@Civil_Guruji
Жыл бұрын
Thank you Meraj Meraj Hame bohat khusi hai ki aapko hamari mehnat pasand aai , Civilguruji isi tarah civil engineers ko aage badane ke liye mehnat karte rahega aur aap bhi knowledge dusro ko share karte rahe. KEEP LEARING, KEEP SHARING.
All stirrup ke baare me video banaye sr
Nice sir G
sir beam laping pr bhi video banaye 👌🏻
@Civil_Guruji
3 жыл бұрын
Sure will make it soon
Sir make video on retaining wall steel design
आजकल तो लोग पाइलिंग पर घर बनवा रहे हैं जमीन के अंदर 10 फीट तक जो पाइलिंग की जाती है। •उसमे क्या सावधानियां रखें। • उसकी रिंग बनाते समय क्या सावधानियां रखनी है। इन सब टॉपिक पर एक कंप्लीट वीडियो बनाएं।
Sir ji interview k liye or barbending trade k liye please vedio dijiye
Sir aisehi information dijeye🙏
Pls make video on upvc pipes
Kindly make video about highway work sir
Design of footing ka videos banaye
Coner column stirrups calculated quality.
Very nice idea sir ❤️👌thank you so much 🙏🙏 maine aapko add karliya hai ,ho saketo mujhe v add kijiyega 🙏🙏 mai new hu sir
Can we cast 12m bar for column without cutting , for clear height 4m (2Floor) ?
If you use more english words(especially for numbers) it's been best explanation
Sir helpful video hain sir dog legged Staircase ka steel placing and positioning of 1st and 2nd flight pe ek video baniya na
@Civil_Guruji
3 жыл бұрын
Jau ji thank you... Sure aage aane wale videos m zarur cover kiya jayega apka topic...
V very nice👍