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Pile foundation design

 
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bhavya
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PostPosted: Wed Jan 04, 2017 5:17 am    Post subject: Pile foundation design Reply with quote
Hi all,

I have performed pile design calculations for a steel column 1470 mm above ground level and extended 800 mm below ground. Have checked compression capacity, tension capacity, lateral capacity and bending moment for a 300mm dia pile and depth 1.5m. The pile is extended by 200 mm above ground level so the total length of pile is 1.7m. Checked bending moment using IS 2911 and Brom's method. Please could you give your inputs and suggestions.

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saikiran gone
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Joined: 22 Apr 2016
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PostPosted: Wed Jan 04, 2017 10:37 am    Post subject: Re: Pile foundation design Reply with quote
bhavya wrote:
Hi all,

I have performed pile design calculations for a steel column 1470 mm above ground level and extended 800 mm below ground. Have checked compression capacity, tension capacity, lateral capacity and bending moment for a 300mm dia pile and depth 1.5m. The pile is extended by 200 mm above ground level so the total length of pile is 1.7m. Checked bending moment using IS 2911 and Brom's method. Please could you give your inputs and suggestions.



Hi Bhavya,

The figure 4 from IS 2911 you should use this graph for long piles. In your case pile is categorized as the short pile. The deflection formula for short pile you should include as per brooms. The formula given in IS 2911 is purely for a long pile.

What is the lateral deflection limit you consider?As above pile calculations is for solar module supporting structure.


With Regards,
Saikiran.
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bhavya
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Joined: 21 May 2016
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PostPosted: Wed Jan 04, 2017 10:46 am    Post subject: Reply with quote
Thanks Mr. Sai Kiran for your response. The limit considered for lateral deflection is 5mm (as per IS 2911- Part 4- Pile load tests.)

Any other suggestions??

Regards

-Bhavya
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saikiran gone
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PostPosted: Wed Jan 04, 2017 12:03 pm    Post subject: Reply with quote
bhavya wrote:
Thanks Mr. Sai Kiran for your response. The limit considered for lateral deflection is 5mm (as per IS 2911- Part 4- Pile load tests.)

Any other suggestions??

Regards

-Bhavya


Hi Bhavya,

You should not consider the bottom of the pile as a depth of fixity for deflection or lateral load resistance calculation. It completely depends on soil modulus (i.e nh , k ). You calculate the lateral resistance and deflection as per the broom method for short piles. For long pile you can follow the IS code.
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bhavya
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PostPosted: Thu Jan 05, 2017 9:57 am    Post subject: Reply with quote
Hi Saikiran,

Thanks for your reply. It is not possible for me to disclose a few aspects on the forum is it okay to share your contact details?

-Bhavya
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saikiran gone
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PostPosted: Thu Jan 05, 2017 5:36 pm    Post subject: Reply with quote
bhavya wrote:
Hi Saikiran,

Thanks for your reply. It is not possible for me to disclose a few aspects on the forum is it okay to share your contact details?

-Bhavya

Hi Bhavya,

Please contact me on below mail,
saikiran.gone@gmail.com

With Best,
Saikiran Gone.
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