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Concrete cover
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sharvil_faroz
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Joined: 02 Jun 2018
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PostPosted: Sat Jul 28, 2018 11:30 am    Post subject: Concrete cover Reply with quote

Concrete cover can be specifically design for a designated service life so that it satisfies the criteria for probability of corrosion initiation.
Feel free to ask more about durability based design of concrete structures.


Regards,

Dr Sharvil Alex Faroz PhD,

Infrastructure Risk Management.


On Fri, Jul 20, 2018 at 12:23 AM, Seshadri <forum@sefindia.org (forum@sefindia.org)> wrote:
[quote]            Satyapaul has covered many key points. Just to compliment his answer, the concrete cover thickness is decided mainly from durability angle, for the specific exposure condition - mild to . It should be minimum 20mm in mild exposure conditions (of rebar) and min 75mm in extreme exposure conditions.



S. Seshadri



On 16 July 2018 at 09:57, SATYAPAUL forum@sefindia.org (forum@sefindia.org))> wrote:
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venkatesh
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PostPosted: Sat Aug 04, 2018 10:05 am    Post subject: Reply with quote

what is the cover of liquid retaining structure when the reinforcement is placed in middle (single) , as in the case when the thickness of wall is only 100 mm. whether to consider normal cover or the distance between center of bar to extreme fibre.

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Venkateshwar Rao
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ibu_4_u
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PostPosted: Sun Aug 05, 2018 3:27 am    Post subject: Reply with quote

As the structure is normal water retaining structure. Minimum cover from water face is 45mm, however if both side water is there and you want to place reinforcement in center then increase the wall thickness,(cover+cover+vertical+horizontal bar) 45+45+8+8=106 provide minimum wall thickness in case of water retaining 115mm



venkatesh wrote:
what is the cover of liquid retaining structure when the reinforcement is placed in middle (single) , as in the case when the thickness of wall is only 100 mm. whether to consider normal cover or the distance between center of bar to extreme fibre.

Thanks & Regards
Venkateshwar Rao
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saikiran gone
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PostPosted: Sun Aug 05, 2018 11:36 am    Post subject: Re: Concrete cover Reply with quote

sathyace wrote:
Hi all,

What should be the minimum thickness of concrete on the external face of the structural section(cover) to transfer the tension from HYSD bars of grade 500 and above?

Please provide your guidance.

Thank you,
Sathya.



Hi Sathy,

Can you provide the input for which structure you require the concrete clear cover to the reinforcement.

Regards,
Saikiran Gone.
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abhio
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PostPosted: Mon Aug 06, 2018 5:38 am    Post subject: Re: Concrete cover Reply with quote

sathyace wrote:
Hi all,

What should be the minimum thickness of concrete on the external face of the structural section(cover) to transfer the tension from HYSD bars of grade 500 and above?

Please provide your guidance.

Thank you,
Sathya.


Dear Sir,

The concrete cover is not counted in the confinement of the bar. You ought to provide adequate confinement to the bar by means of properly developed stirrups.
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sathyace
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PostPosted: Mon Aug 06, 2018 3:43 pm    Post subject: Reply with quote

Thank you all for your valuable reply.

My doubt is for the higher steel grades like Fe 500 and above,the concrete cover thickness will be the same as per IS Codes?

Thanks,
Sathya.
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