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Provision of lap

 
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sspawar
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Joined: 05 Jun 2009
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PostPosted: Sat Mar 01, 2014 11:53 am    Post subject: Provision of lap Reply with quote

Dear All

Can rebars be placed as shown in picture ?

Regards



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umeshrao
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Joined: 23 Aug 2010
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PostPosted: Sun Mar 02, 2014 6:41 am    Post subject: Provision of lap Reply with quote

Dear Mr. Pawar saheb,  Yes. There is nothing wrong. Infact, if you do not wish to provide such long length you may weld the short bars to both reinforcement of length 15 * bar dia on both sides that is length of bar will be 30*25= 750 mm instead of 2500 mm. Only care to be taken is adjacent bar lap shall be staggered. It is normal and is also covered in SP 34 and earlier publication of Tor -steel Research Foundation in India. Regards
Umesh Rao    

On 1 March 2014 17:23, sspawar <forum@sefindia.org (forum@sefindia.org)> wrote:
Quote:
           Dear All

Can rebars be placed as shown in picture ?

Regards
     



     
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sspawar
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PostPosted: Sun Mar 02, 2014 10:04 am    Post subject: Reply with quote

thank you Rao saheb.

Actually at one place few full length rebars lengthwise have been oversized and could not be accommodated in a particular end to end span. while at the ends bars have L shape bend already.

in such cases this is easy to cut staggeringly and to put laps in that manner.

or otherwise re- straight the bars cut extra length then re-bend them is a major rework.
regards
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amarjeetsingh
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PostPosted: Sun Mar 02, 2014 11:08 am    Post subject: Provision of lap Reply with quote

sir

u can either weld as suggested by Mr Umesh Rao or can even provide mechanical couplers also as they may be competative for 25 mm bar.


regrds


amarjeet singh



On Sat, Mar 1, 2014 at 5:23 PM, sspawar <forum@sefindia.org (forum@sefindia.org)> wrote:
Quote:
           Dear All

Can rebars be placed as shown in picture ?

Regards
     



     
Download Attachments:
Lap joint Model (1).pdf




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umeshrao
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Joined: 23 Aug 2010
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PostPosted: Sun Mar 02, 2014 1:16 pm    Post subject: Reply with quote

sspawar wrote:
thank you Rao saheb.
Actually at one place few full length rebars lengthwise have been oversized and could not be accommodated in a particular end to end span. while at the ends bars have L shape bend already.
in such cases this is easy to cut staggeringly and to put laps in that manner. or otherwise re- straight the bars cut extra length then re-bend them is a major rework.
regards


dear Pawar saheb, That is beauty of civil engineering. All equations and construction practices are universal. But each site and project is unique and hence it is extremely difficult write an article or a book. Problems are unique and hence solutions are unique, that is reason all engineers in design office or at site needs to be saluted and appreciated, SEFI site is unique because all this is done under one portal[ roof] A mega/ super mart.
Regards
Umesh Rao
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Venkateshp
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Joined: 26 Jan 2003
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PostPosted: Sun Mar 02, 2014 5:05 pm    Post subject: Provision of lap Reply with quote

Sir, can we provide the coupler instead of lapping of two bars in beams? And Will it be more flexible compared to lapping of two bars?


Thanks and regards,
P. Venkatesh
GET On 02/03/2014 8:52 pm, amarjeetsingh <forum@sefindia.org> wrote:
sir

u can either weld as suggested by Mr Umesh Rao or can even provide mechanical couplers also as they may be competative for 25 mm bar.


regrds


amarjeet singh



On Sat, Mar 1, 2014 at 5:23 PM, sspawar forum@sefindia.org)> wrote:
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k.gangadharan
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Joined: 01 Apr 2008
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PostPosted: Tue Mar 04, 2014 4:36 am    Post subject: Provision of lap Reply with quote

dear friends.


I have to inform you   a very glad news. 

Dr. N. Subramanian,  our famous sefian, has won the  lifetime achievement award constituted by INDIAN CONCRETE INSTITUTE & L &  T, For the year 2013,. for his contributions  to the computer aided design and consultancy in concrete structures.


This news is published in the IEI NEWS Letter (no.10) dated jan  1 2014  with his photo which was released this week. 


Hearty congratulationas to Dr.NS.


regardes

K. Gangadharan 

general sponsor. 







Click here to Reply or Forward








On Sun, Mar 2, 2014 at 8:51 PM, amarjeetsingh <forum@sefindia.org (forum@sefindia.org)> wrote:
[quote]            sir

u can either weld as suggested by Mr Umesh Rao or can even provide mechanical couplers also as they may be competative for 25 mm bar.


regrds


amarjeet singh



On Sat, Mar 1, 2014 at 5:23 PM, sspawar forum@sefindia.org (forum@sefindia.org))> wrote:
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satish wagh
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Joined: 19 May 2008
Posts: 32

PostPosted: Tue Mar 04, 2014 6:09 am    Post subject: Provision of lap Reply with quote

Hearty Congratulations Dr N. Subramanian !

From: k.gangadharan [mailto:forum@sefindia.org]
Sent: Tuesday, March 04, 2014 11:37 AM
To: general@sefindia.org
Subject: [SEFI] Re: Provision of lap



dear friends.


I have to inform you a very glad news.

Dr. N. Subramanian, our famous sefian, has won the lifetime achievement award constituted by INDIAN CONCRETE INSTITUTE & L & T, For the year 2013,. for his contributions to the computer aided design and consultancy in concrete structures.


This news is published in the IEI NEWS Letter (no.10) dated jan 1 2014 with his photo which was released this week.


Hearty congratulationas to Dr.NS.


regardes

K. Gangadharan

general sponsor.







Click here to Reply or Forward








On Sun, Mar 2, 2014 at 8:51 PM, amarjeetsingh forum@sefindia.org (forum@sefindia.org))> wrote:
Quote:
sir

u can either weld as suggested by Mr Umesh Rao or can even provide mechanical couplers also as they may be competative for 25 mm bar.


regrds


amarjeet singh



On Sat, Mar 1, 2014 at 5:23 PM, sspawar forum@sefindia.org (forum@sefindia.org) (forum@sefindia.org (forum@sefindia.org)))> wrote:
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umeshrao
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PostPosted: Tue Mar 04, 2014 6:20 am    Post subject: Provision of lap Reply with quote

Dear Mr. Venkatesh,Yes you can couplers in lieu of lapping. Couplers have been tested for dynamic fatigue test and these test were carried out 40 years back. Hence, you can use it without apprehension. I have used it in 1982 or so crimping couplers with Fe 500 reinforcement and has been performing well.
Regards
Umesh Rao 






On 4 March 2014 11:41, Venkateshp <forum@sefindia.org (forum@sefindia.org)> wrote:
Quote:
           Sir, can we provide the coupler instead of lapping of two bars in beams? And Will it be more flexible compared to lapping of two bars?


Thanks and regards,
P. Venkatesh
GET On 02/03/2014 8:52 pm, amarjeetsingh wrote:
sir

u can either weld as suggested by Mr Umesh Rao or can even provide mechanical couplers also as they may be competative for 25 mm bar.


regrds


amarjeet singh



On Sat, Mar 1, 2014 at 5:23 PM, sspawar forum@sefindia.org (forum@sefindia.org))> wrote:
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V Ramachandran
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Joined: 02 Feb 2009
Posts: 137
Location: Bangalore

PostPosted: Tue Mar 04, 2014 9:48 am    Post subject: Provision of lap Reply with quote

Congratulations Dr. N. Subramanian, SEFI is proud of you. Wish you more laurels in the years to come.

V. Ramachandran.



On Tuesday, March 4, 2014 2:39 PM, Venkateshp <forum@sefindia.org> wrote:

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