Bearing Capacities
3
By E-mail : [email protected] Our Ref. : C-27/70559/5492/ Dated : 28.07.2012 M/s Jaiprakash Associates Limited, Project Office, Sultanpur, Sector - 128 Noida – 201 301 (U.P.) Kind Attn.: Mr. S. C. Sharma Sub. : Geotechnical Investigation under various phases of work for ‘THE ORCHARD” at sector-128, Noida (U.P.). Dear Sir, This is in reference to e-mail dated 27.07.2012 we received from Mr. Nitin Yadav of your structural consultants M/s Civtech Consultants in respect of the subject work. As desired we have computed the bearing capacities of sub-soil strata for open spread strip / isolated (square) footing foundations laid depths 6.00 m & 7.00 m below the existing ground level as per IS:6403-1981, IS:8009 (Part-I)-1976 & IS:1904-1986. The following are the values of bearing capacities thus arrived at from shear failure criteria & settlement failure criteria :- Sl. No. Type of foundation Depth of foundn. below existing ground level (m) Size/width of foundation (m) Safe bearing capacity obtained from shear failure criteria (t/m 2 ) Allowable bearing pressure obtained from settlement failure criteria (t/m 2 ) (A) At the location of bore hole BH-A1 : (a) Open spread Strip Footing 6.0 2.0 3.0 4.0 9.2 9.4 9.8 15.8 11.1 8.2 7.0 2.0 3.0 4.0 9.2 9.4 9.8 17.4 12.3 9.7 Contd…2/-
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Transcript of Bearing Capacities
By E-mail : [email protected]
Our Ref. : C-27/70559/5492/ Dated : 28.07.2012
M/s Jaiprakash Associates Limited, Project Office, Sultanpur, Sector - 128 Noida – 201 301 (U.P.) Kind Attn.: Mr. S. C. Sharma Sub. : Geotechnical Investigation under various phases of work for ‘THE ORCHARD”
at sector-128, Noida (U.P.). Dear Sir, This is in reference to e-mail dated 27.07.2012 we received from Mr. Nitin Yadav of your structural consultants M/s Civtech Consultants in respect of the subject work. As desired we have computed the bearing capacities of sub-soil strata for open spread strip / isolated (square) footing foundations laid depths 6.00 m & 7.00 m below the existing ground level as per IS:6403-1981, IS:8009 (Part-I)-1976 & IS:1904-1986. The following are the values of bearing capacities thus arrived at from shear failure criteria & settlement failure criteria :- Sl. No.
Type of foundation
Depth of foundn. below existing ground
level (m)
Size/width of foundation
(m)
Safe bearing capacity
obtained from shear failure criteria (t/m2)
Allowable bearing pressure obtained from
settlement failure criteria (t/m2)
(A) At the location of bore hole BH-A1 :
(a) Open spread Strip Footing
6.0 2.0 3.0 4.0
9.2 9.4 9.8
15.8 11.1 8.2
7.0
2.0 3.0 4.0
9.2 9.4 9.8
17.4 12.3 9.7
Contd…2/-
GROUND ENGINEERING LIMITED Our Ref. : C-27/70559/5492/ Dated : 28.07.2012
– 2 –
Sl. No.
Type of foundation
Depth of foundn. below existing ground
level (m)
Size/width of foundation
(m)
Safe bearing capacity
obtained from shear failure criteria (t/m2)
Allowable bearing pressure obtained from
settlement failure criteria (t/m2)
(A) At the location of bore hole BH-A1 :
(b) Open spread Isolated (Square) Footing
6.0 3.0 x 3.0 4.0 x 4.0 5.0 x 5.0 6.0 x 6.0
11.3 11.5 11.8 12.2
22.5 20.8 19.6 18.8
7.0
3.0 x 3.0 4.0 x 4.0 5.0 x 5.0 6.0 x 6.0
11.3 11.5 11.8 12.2
24.4 22.3 20.8 20.0
(B) At the location of bore holes BH-A2 & BH-A3 :
(a) Open spread
Strip Footing
6.0 2.0 3.0 4.0
12.0 12.0 12.3
16.8 13.6 12.9
7.0
2.0 3.0 4.0
12.0 12.0 12.3
17.7 15.9 14.1
(b)
Open spread Isolated (Square) Footing
6.0
3.0 x 3.0 4.0 x 4.0 5.0 x 5.0 6.0 x 6.0
14.8 14.9 15.1 15.4
23.6 23.3 22.7 21.9
7.0
3.0 x 3.0 4.0 x 4.0 5.0 x 5.0 6.0 x 6.0
14.8 14.9 15.1 15.4
26.0 25.1 24.1 22.9
Contd…3/-
GROUND ENGINEERING LIMITED Our Ref. : C-27/70559/5492/ Dated : 28.07.2012
– 3 – NOTES : (1) Open spread strip / isolated (square) footing foundations analyzed at depths 6.00 m &
7.00 m below the existing ground level have been considered at 1.00 m depth below the lower basement floor level.
(2) For open spread isolated (square) footing foundations analyzed depths 6.00 m & 7.00
m below the existing ground level, the existing soil overburden up to the lower basement floor level to be removed for laying the foundations has already been added to the values of allowable bearing pressure obtained from settlement failure consideration.
We hope you will find the above in order. Thanking you, Yours faithfully, for GROUND ENGINEERING LIMITED (NEERAJ KUMAR JAIN) EXECUTIVE DIRECTOR C.C. : Mr. Nitin Yadav e-mail : [email protected] I:\REPORT (NEW J)\BEARING CAPACITIES\Bearing Capacity - New (LK-2).doc
