PILE LOAD TESTING REPORT Name of Client
Rays Power Infra Pvt. Ltd.
Name of Work
Pile Load Testing at Solar Power Project
Report No.
DCC/201706/22
Location
Village Mohari, Kharda, Jamkhed, Dist. Ahmadnagar, Maharashtra Prepared By DOLPHIN TESTING LAB. (AN ISO 9001-2008 Certified Lab.) Plot No. 15, Bhadla Jav, Opp. Sankar Garden, Hanslav Ki Pal, Mandore, Jodhpur Rajasthan - 342304 M.No. +91 9928366291, +91 +91 9001891168
[email protected] www.dlab.co.in
Pile Load Testing at Solar Power Project Ahmadnagar, Maharashtra
BRIEF DETAIL OF PROJECT SITE
CLIENT
Rays Power Infra Pvt. Ltd.
NAME OF WORK
Pile Load Testing for Solar Power Project
LOCATION
Village Mohari, Kharda, Jamkhed, Dist. Ahmadnagar, Maharashtra
TESTING AGENCY
DOLPHIN TESTING LAB. Plot No.15, Bhadla Jav, Opp. Sankar Garden, Hanslav Ki Pal, Mandore, Jodhpur Rajasthan – 342304. M.No. +91 9928366291, +91 9001891168 www.dlab.co.in
Ref. Code
IS : 2911 (Part-4) -2013 Code of Practice For Design and Construction of Pile Foundations Part-4 :- LOAD TEST ON PILES
Pile Type
Concrete Pile with C-Section
No. of Pile Load Test
Pullout Test: 4
Dolphin Construction Co. Jodhpur
Pile Load Testing at Solar Power Project Ahmadnagar, Maharashtra
CONTENTS
Sr. No.
PARTICULARS
1
Introduction
2
Objective
3
Field Work
4
Methodology of Pile Load Test
5
Load Calculation
6
Typical Calculation Tables & Graph
Dolphin Construction Co. Jodhpur
Pile Load Testing at Solar Power Project Ahmadnagar, Maharashtra
1.0
INTRODUCTION:
Pile Load Testing for Solar Power Project, was referred to us by Rays Power Infra Pvt. Ltd. With reference to above we deputed our engineering team for the purpose of testing from 26 th June 2017 under the supervision of Mr. Omprakash, Dolphin Testing Lab., Jodhpur, Rajasthan.
2.0
OBJECTIVE: Object of the Pile Load Tests to Check the Uplift Capacity, Lateral Load Capacity and Vertical Load (Compression) Capacity. As per IS: 2911(IV) – 2013 respectively.
Dolphin Construction Co. Jodhpur
Pile Load Testing at Solar Power Project Ahmadnagar, Maharashtra
3.0
FIELD WORK:
3.1
Scope of Work: 1)
3.2
As per I.S.: 2911 Part-4 -2013 Clause No. 9.4 Pile Load Test by Pull Out Method, Routine Test.
Pile Load Test: (1) (2) (3) (4) (5) (6)
Mobilization of necessary equipment, technical supervisors, skilled & unskilled labour etc. for successful execution of work. Carrying out all necessary arrangement for Pile Load Tests. Fix Hydraulic jack according to direction for loading. Fix displacement Meters for measurement of displacement of Pile due to applied load as per IS Code . Apply load using hydraulic pump and measure displacement at different load as per scope of work. Submission of report containing all field data, calculations, results etc. complete with all respect.
Dolphin Construction Co. Jodhpur
Pile Load Testing at Solar Power Project Ahmadnagar, Maharashtra
4
METHOD OF TESTING: The load from structures to the foundation can be compression (downward), tension (upward), or lateral (sideway). The upward load carrying resistance of a foundation encompasses most of the load condition considered. In order to replicate these often enormous loads, several methodologies have been devised.
4.1
Pull out Load Test Method: The methodology adopted for Pile Load Test by Pull Out method is in such a way that the hydraulic jack is made to rest on rolled steel joist resting on two supports on the ground. The jack reacts against a frame attached to the top of the pile such that when the jack is operated, the pile gets pulled up and the reaction is transferred to the ground through the supports. The framework shall be capable of lifting the entire load through hydraulic jack. The dial gauge shall be placed to measure the displacement of piles of 0.01 mm sensitivity. The dial gauge positioned at equal distance around the piles and normally held by datum bar resting on immovable supports. This test accurately predicts the foundation response at required full Pull Out design load. This method is applicable for both initial and routine test. This test is also known as Uplift load test. The framework can be attached to the pile top with the reinforcement bars which may be threaded or to which threaded bolts may be welded. It will have threads at top for fixing it to the framework. For larger loads the number of rods may have to be more and depending on the set-up these may be put in a line or in any other symmetrical pattern. For routine tests, the framework is normally attached to the reinforcing. Application of Load – The test should be carried out by applying a series of uplift incremental load of safe load on the pile. The Safe load shall be taken as the least of the following (as per IS:2911-Part-4 1985 Clause No.9.4) Dolphin Construction Co. Jodhpur
Pile Load Testing at Solar Power Project Ahmadnagar, Maharashtra
a)Two‐Third of the final load at which the total displacement attains
a value of 12 mm or the load corresponding to a specified permissible uplift, and b) 50 Percent of the final load at which the load ‐ displacement curve
shows a clear break (downward trend).
Dolphin Construction Co. Jodhpur
Pile Load Testing at Solar Power Project Ahmadnagar, Maharashtra
5
LOAD CALCULATION: Pressure:1 = 10 / = 14.50 10 / =
.
/ = 1.019716 /
14.50 = 1.019716 / 1 = 0.07032 /
Example 1. For Example an RCH 206 cylinder with 30.7 cm 2 effective area operating at 100psi pressure will generate what force? Solution:Hydraulic working pressure (P) = = 100
2
2
= 100 0.07032 / = 7.032 /
Cylinder Effective Area A=30.7 cm 2 From Basic Hydraulic we know Force = (Hydraulic working pressure) x (Cylinder Effective Area) F=PxA
2
2
= 7.032 / 30.70 = 215.88 = .
Dolphin Construction Co. Jodhpur
Type of Test : Pile Load Test Client : Rays Power Infra pvt. Ltd. Name of Work : Pile Load Test at Solar Power Project Ahmadnagar, Maharashtra Summary Sheet Pullout Load Test Average
S. No.
Pile ID
Depth (mm)
Dia (mm)
Load MT
Reading A (mm)
Reading B (mm)
Displacement Cumulative
Safe Load MT
(mm)
1 2 3 4
P-01 P-02 P-03 P-04
1450 1450 1450 1450
300 300 300 300
1.295 2.591 2.591 2.591
12.80 0.55 0.60 0.25
14.55 1.68 0.40 0.71
13.675 1.115 0.500 0.480
0.65 1.73 1.73 1.73
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Type of Test : Pile Load Test (Pullout) Client : Rays Power Infra pvt. Ltd. Name of Work : Pile Load Test at Solar Power Project Ahmadnagar, Maharashtra Pile ID : 1R1-52-3-2
P-01
Depth of Pile :
1450 MM
Date of Testing :
24-06-2017
Dia. Of Pile: 300mm Date of Casting : 22-06-2017
Jack Cylinder Effective Area=30.7 Sq.cm
S.No.
Time
Pressure in PSI
Load in Kg
Load MT
Reading A (mm)
Reading B (mm)
Average Displacement Cumulative (mm)
Displacement Between Each Increment (mm)
1
11:15
0
0
0
0.00
0.00
0.000
0
2
11:15
100
216
0.216
0.00
0.07
0.035
0.035
3
11:20
200
432
0.432
0.00
0.25
0.125
0.090
4
11:25
300
648
0.648
0.17
0.38
0.275
0.150
5
11:30
400
864
0.864
0.45
0.65
0.550
0.275
6
11:35
500
1079
1.079
0.85
1.10
0.975
0.425
7
11:40
600
1295
1.295
6.10
6.30
6.200
5.225
8
11:45
700
1511
1.511
12.80
14.55
13.675
7.475
Pile ID : P-01 1.6 1.4 1.2 ) 1 T M ( d 0.8 a o L 0.6
0.4 0.2 0 0.000
2.000
4.000
6.000
8.000
10.000
12.000
14.000
16.000
18.000
20.000
Displacement (mm)
Note: The Safe load shall be taken as the least of the following (as per IS:2911-Part-4 2013 Clause No.9.4) (a-1)Two-Third of the final load at which the total displacement attains a value of 12 mm or the load
corresponding to a specified premissible uplift. Total Load applied: 2/3 of the load =
1.511 MT 1.01 MT
(a-2) safe load is Half of the load at which the load displacement curve shows a clear break. Total Load applied:
1.511 MT
Half of the Load :
0.76
Least of (a-1) and (a-2)
0.76 MT
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Type of Test : Pile Load Test (Pullout) Client : Rays Power Infra pvt. Ltd. Name of Work : Pile Load Test at Solar Power Project Ahmadnagar, Maharashtra Pile ID :
P-02
Depth of Pile :
1450 MM
Date of Testing :
24-06-2017
Dia. Of Pile: 300mm Date of Casting : 22-06-2017
Jack Cylinder Effective Area=30.7 Sq.cm
S.No.
Time
Pressure in PSI
Load in Kg
Load MT
Reading A (mm)
Reading B (mm)
Average Displacement Cumulative (mm)
Displacement Between Each Increment (mm)
1
10:00
0
0
0
0.00
0.00
0.000
0
2
10:00
100
216
0.216
0.01
0.08
0.045
0.045
3
10:05
200
432
0.432
0.02
0.13
0.075
0.030
4
10:10
300
648
0.648
0.03
0.20
0.115
0.040
5
10:15
400
864
0.864
0.04
0.26
0.150
0.035
6
10:20
500
1079
1.079
0.08
0.30
0.190
0.040
7
10:25
600
1295
1.295
0.09
0.40
0.245
0.055
8
10:30
700
1511
1.511
0.10
0.60
0.350
0.105
9
10:35
800
1727
1.727
0.16
0.85
0.505
0.155
10
10:40
900
1943
1.943
0.25
1.08
0.665
0.160
11
10:45
1000
2159
2.159
0.32
1.34
0.830
0.165
12
10:50
1100
2375
2.375
0.42
1.50
0.960
0.130
13
10:55
1200
2591
2.591
0.55
1.68
1.115
0.155
Pile ID : P-02 3 2.5 ) 2 T M ( d 1.5 a o L
1
0.5 0 0.000
2.000
4.000
6.000
8.000
10.000
12.000
14.000
16.000
18.000
20.000
Displacement (mm)
Note: The Safe load shall be taken as the least of the following (as per IS:2911-Part-4 2013 Clause No.9.4) (a-1)Two-Third of the final load at which the total displacement attains a value of 12 mm or the load
corresponding to a specified premissible uplift. Total Load applied: 2/3 of the load =
2.591 MT 1.73 MT
(a-2) safe load is Half of the load at which the load displacement curve shows a clear break. No Clear Break. Least of (a-1) and (a-2)
1.73 MT
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Type of Test : Pile Load Test (Pullout) Client : Rays Power Infra pvt. Ltd. Name of Work : Pile Load Test at Solar Power Project Ahmadnagar, Maharashtra Pile ID :
P-03
Depth of Pile :
1450 MM
Date of Testing :
24-06-2017
Dia. Of Pile: 300mm Date of Casting : 22-06-2017
Jack Cylinder Effective Area=30.7 Sq.cm
S.No.
Time
Pressure in PSI
Load in Kg
Load MT
Reading A (mm)
Reading B (mm)
Average Displacement Cumulative (mm)
Displacement Between Each Increment (mm)
1
8:40
0
0
0
0.00
0.00
0.000
0
2
8:40
100
216
0.216
0.00
0.00
0.000
0.000
3
8:45
200
432
0.432
0.10
0.01
0.055
0.055
4
8:50
300
648
0.648
0.18
0.02
0.100
0.045
5
8:55
400
864
0.864
0.26
0.09
0.175
0.075
6
9:00
500
1079
1.079
0.30
0.11
0.205
0.030
7
9:05
600
1295
1.295
0.35
0.13
0.240
0.035
8
9:10
700
1511
1.511
0.40
0.22
0.310
0.070
9
9:15
800
1727
1.727
0.42
0.24
0.330
0.020
10
9:20
900
1943
1.943
0.48
0.28
0.380
0.050
11
9:25
1000
2159
2.159
0.50
0.30
0.400
0.020
12
9:30
1100
2375
2.375
0.55
0.38
0.465
0.065
13
9:35
1200
2591
2.591
0.60
0.40
0.500
0.035
Pile ID : P-03 3 2.5 ) 2 T M ( d 1.5 a o L
1
0.5 0 0.000
2.000
4.000
6.000
8.000
10.000
12.000
14.000
16.000
18.000
20.000
Displacement (mm)
Note: The Safe load shall be taken as the least of the following (as per IS:2911-Part-4 2013 Clause No.9.4) (a-1)Two-Third of the final load at which the total displacement attains a value of 12 mm or the load
corresponding to a specified premissible uplift. Total Load applied: 2/3 of the load =
2.591 MT 1.73 MT
(a-2) safe load is Half of the load at which the load displacement curve shows a clear break. No Clear Break. Least of (a-1) and (a-2)
1.73 MT
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Type of Test : Pile Load Test (Pullout) Client : Rays Power Infra pvt. Ltd. Name of Work : Pile Load Test at Solar Power Project Ahmadnagar, Maharashtra Pile ID :
P-04
Depth of Pile :
1450 MM
Date of Testing :
24-06-2017
Dia. Of Pile: 300mm Date of Casting : 22-06-2017
Jack Cylinder Effective Area=30.7 Sq.cm
S.No.
Time
Pressure in PSI
Load in Kg
Load MT
Reading A (mm)
Reading B (mm)
Average Displacement Cumulative (mm)
Displacement Between Each Increment (mm)
1
12:10
0
0
0
0.00
0.00
0.000
0
2
12:10
100
216
0.216
0.06
0.11
0.085
0.085
3
12:15
200
432
0.432
0.06
0.25
0.155
0.070
4
12:20
300
648
0.648
0.11
0.38
0.245
0.090
5
12:25
400
864
0.864
0.13
0.53
0.330
0.085
6
12:30
500
1079
1.079
0.13
0.53
0.330
0.000
7
12:35
600
1295
1.295
0.13
0.57
0.350
0.020
8
12:40
700
1511
1.511
0.15
0.60
0.375
0.025
9
12:45
800
1727
1.727
0.18
0.63
0.405
0.030
10
12:50
900
1943
1.943
0.23
0.68
0.455
0.050
11
12:55
1000
2159
2.159
0.25
0.71
0.480
0.025
12
13:00
1100
2375
2.375
0.25
0.71
0.480
0.000
13
13:05
1200
2591
2.591
0.25
0.71
0.480
0.000
Pile ID : P-04 3 2.5 ) 2 T M ( d 1.5 a o L
1
0.5 0 0.000
2.000
4.000
6.000
8.000
10.000
12.000
14.000
16.000
18.000
20.000
Displacement (mm)
Note: The Safe load shall be taken as the least of the following (as per IS:2911-Part-4 2013 Clause No.9.4) (a-1)Two-Third of the final load at which the total displacement attains a value of 12 mm or the load
corresponding to a specified premissible uplift. Total Load applied: 2/3 of the load =
2.591 MT 1.73 MT
(a-2) safe load is Half of the load at which the load displacement curve shows a clear break. No Clear Break. Least of (a-1) and (a-2)
1.73 MT
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