STRUCTURAL ENGINEERING FORUM OF INDIA [SEFI]

rayeesnaqashbandi · General Sponsor Joined: 27 Oct 2013 Posts: 5

Respected all
Kindly provide valuable guidance how to calculate the bearing capacity after providing stone piling in loose soil strata
The NSBC of particular area is 3.3t/sqm
But I need to improve the value to 7.0t/sqm

Regards
CEng Rayees Naqashbandi
M. Tech (Structural Engineer) B.E. (Civil Engineering)
+919419018103

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Mueed rasool · SEFI Member Joined: 01 Mar 2017 Posts: 2

Sure sir.You can contact on me on 9906921840.

Regards
Mueed Rasool

On Fri, Sep 1, 2023, 7:21 PM rayeesnaqashbandi <forum@sefindia.org (forum@sefindia.org)> wrote:

gondelamahesh · SEFI Member Joined: 14 May 2020 Posts: 2

Please share related site pic

On Fri, 1 Sept 2023, 16:50 rayeesnaqashbandi, <forum@sefindia.org (forum@sefindia.org)> wrote:

KANNAN.M · SEFI Member Joined: 10 Dec 2019 Posts: 3

Try with plate load test.

On Fri, Sep 1, 2023, 9:23 PM rayeesnaqashbandi <forum@sefindia.org (forum@sefindia.org)> wrote:

lagnajit das · SEFI Member Joined: 14 Nov 2016 Posts: 3

You may adopt Under reamed pile.

On Sat, 2 Sep, 2023, 3:37 am rayeesnaqashbandi, <forum@sefindia.org (forum@sefindia.org)> wrote:

KANNAN.M · SEFI Member Joined: 10 Dec 2019 Posts: 3

I have suggested try the plate load test.Kannan.MKarthick Associates
Chennai
9486100506

On Sat, Sep 2, 2023 at 3:48â€¯AM karthi associates <karthickassociates61@gmail.com (karthickassociates61@gmail.com)> wrote:

sspawar · ... Joined: 05 Jun 2009 Posts: 1204

You have to assess bearing capacity of group of stone piles and the sum of NSBC and stone pile group may be increased by add more stone piles to attain required SBC.
following literature may helpful for you
Regards

Bhimaji Dashrath Kanawade · SEFI Member Joined: 04 Oct 2020 Posts: 3

Respected sir,

Very low SBC means, might be it is dumping ground in past.

Remove all soil upto min 1m. Use stones, gravels material. For overall part, do compaction. Stabilize soils with chemicals, grouting materials.

Thanks & Regards

Bhimaji Dashrath Kanawade

On Fri, 1 Sept 2023, 4:50 pm rayeesnaqashbandi, <forum@sefindia.org (forum@sefindia.org)> wrote:

glnp12 · SEFI Member Joined: 31 Jan 2009 Posts: 5

Sir,
It is not clear, as indicated...stone piling....
Is it stone column by coarse aggregate and vibro-compaction ? This method has many uncertainties.
It is difficult to justify the prediction of SBC by any empirical / numerical methods. Better to go with field testing. Contractor, may promise many things. But designer should ensure SBC with adequate FoS.
With 3.3 t/sq.m., it seems to be marshy land. There will be difficulty to contain the stone column material properly. With application of load, it may start bulging and collapsing at the final load.
Is it possible to give more details about type of soil, ground water level, etc. ?
One should be extremely careful in such cases.
G. Prabhakar.
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On 01-09-2023 04:46 PM, rayeesnaqashbandi wrote: [quote] Respected all Kindly provide valuable guidance how to calculate the bearing capacity after providing stone piling in loose soil strata The NSBC of particular area is 3.3t/sqm But I need to improve the value to 7.0t/sqm Regards CEng Rayees Naqashbandi M. Tech (Structural Engineer) B.E. (Civil Engineering) +919419018103 --

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RENJERLA · SEFI Member Joined: 13 Jan 2012 Posts: 2

Dear Nagashbandi,

Please refer to the Professional Standard "JGJ 79-2012, Technical Code for Ground Treatment of Buildings" for composite foundation calculations.

Regards
ravikumar

On Fri, Sep 1, 2023, 11:43 PM rayeesnaqashbandi <forum@sefindia.org (forum@sefindia.org)> wrote: