1. A plate load test was conducted at a site to determine the soil's bearing capacity for construction. 2. The test was performed 10.5 meters below ground level in dense gravelly soil. A 0.3x0.3 meter plate was used. 3. The failure load was 10.5 tons, with a corresponding settlement of 3.7 mm. The ultimate bearing capacity was determined to be 116 tons/m2, and the safe bearing capacity assuming a safety factor of 3.0 was 38 tons/m2.

1. (Geotechnical Engineering Division)
SBC of proposed site for construction
*****
Please find herewith the test results of plate load test conducted at the site
The test results are as under:-
1. Depth of pit = 0.5m (10.5m below G. L.
approx.)
2. Size of plate used = 0.30m X 0.30m
3. Type of soil existing at 10.5m depth = dense gravelly soil
The test was conducted as per IS 1888:1982.
Failure load = 10.5 t
Corresponding settlement of plate = 3.7 mm
Ultimate bearing capacity Qu = 116 t/m2
Safe Bearing Capacity of soil = 38 t/m2
(assuming factor of safety = 3.0)
Observations of Plate Load Test
Load
(ton)
Dial gauge 1 Dial gauge 2 Dial gauge 3 Dial gauge 4
Avg cum.
Sett.
mm
Cumulative.
Settlement
(mm).
Cumulative.
Settlement
(mm).
Cumulative.
Settlement
(mm).
Cumulative.
Settlement
(mm).
1 0.52 0.31 1.22 1.22 0.82
2 1.11 0.74 2.48 2.48 1.70
3 1.9 1.35 2.8 2.8 2.21
5 2.06 1.54 3.47 3.47 2.64
6 2.21 1.81 3.75 3.75 2.88
7 2.36 1.85 3.95 3.95 3.03
8 2.37 2.09 4.16 4.16 3.20
9 3.99 2.61 4.72 4.72 4.01
10 4.27 2.8 4.93 4.93 4.23
11 4.64 3.2 5.22 5.22 4.57
12 5.5 3.94 6.02 6.02 5.37
13 6.42 4.75 6.84 6.84 6.21

2. Plate Load Test, Budhar
0
1
2
3
4
5
6
7
0 5 10 15
Load in Tons
Settlement(mm)
Note: The correction for water table has not been applied because soil was in
saturated condition due to heavy seepage water at the foundation level.