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Design of RCC box culvert

 
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manoj_123
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Joined: 31 Aug 2009
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PostPosted: Sun Jan 30, 2011 3:39 pm    Post subject: Design of RCC box culvert Reply with quote

While designing RCC box culvert, I observe that the provided
reinforcement quantity is much higher than required quantity.
Please guide me to adopt optimum quantity of reinforcement.
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praveen_sefindia
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Joined: 21 Jun 2010
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PostPosted: Wed Feb 02, 2011 12:21 pm    Post subject: Box Culvert Reply with quote

Design of Box Culvert and quantity of rebars varies for 2D or 3D Analysis. It should be analysed for 3D. Moments in Haunches of Box governs its Design. Sufficient thickness of haunches should be provided in order to counteract the highest moments in that portion.
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gpsarathyy
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Joined: 28 Jun 2010
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PostPosted: Wed Feb 02, 2011 5:30 pm    Post subject: Reply with quote

Mr. Manoj,

Could you explain your problem in detail, it is not clear.

Regards,
G.Parthasarathy
Chennai
GPSARATHYY@GMAIL.COM
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manoj_123
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PostPosted: Thu Feb 10, 2011 3:31 pm    Post subject: box culvert Reply with quote

gpsarathyy wrote:
Mr. Manoj,

Could you explain your problem in detail, it is not clear.

Regards,
G.Parthasarathy
Chennai
GPSARATHYY@GMAIL.COM





Sir,

The box culvert in question is for storm water drainage purpose with depth upto 2 m and width 1.5 m . Now the section provided is 250 mm thick on side and bottom/top. The Ast required as per moment requirement considering IRC loading is coming less but provided steel

of 150 mm c/c is approx double of Ast required. Could you please explain the governing factor for such high quantity of provided steel.
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