Falling Head Permeability Test Sample 515k4c
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KUMPULAN IKRAM SDN BHD FALLING HEAD PERMEABILITY TEST PROJECT: PENYEDIAAN Pelan Induk Tebatan Banjir Bagi Negeri Melaka (SG Batang Melaka) BOREHOLE NO.: BH1
LOCATION:Sek. Sukan Bandar Penawar, Kota Tinggi.
TEST NO.:
PT1
CASING DIAMETER:
TESTING DEPTH: TESTING DATE:
12.9 m 26.7.2007
GROUND W. LEVEL:
CASING DEPTH:
FIELD DATA: Time on Clock
10.67 m 140 mm
(Note: O.D)
12.73 m
GRAPH: Time Elapsed (mins) 0 1 2 3 4 5 6 7 8 9 10 15 20
Depth of Water, mbgl = dt 9.601 9.854 10.109 10.300 10.484 10.658 10.826 10.985 11.100 11.227 11.366 11.824 12.065
ht= GWL - dt
ht/ho
3.13 2.88 2.62 2.43 2.25 2.07 1.90 1.75 1.63 1.50 1.36 0.91 0.67
1.00 0.92 0.84 0.78 0.72 0.66 0.61 0.56 0.52 0.48 0.44 0.29 0.21
12.730
Casing G.L
Value of ht/h0
0.37
Column F
dt Depth of water during testing ht
GWL GWL Casing Depth L
0.20
Borehole
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 T Time (min)
Testing Depth D
CALCULATION: K=
A FT
where,
A=
0.02 m2
F=
2.82
T=
12.0 min
K= A= F=
Soil permeability Cross sectional area of borehole Intake Factor (refer to BS5930:1999, Fig. 6, pg. 50, case (d)) 2πL loge[(L/D)+(1+(L/D)2)1/2]
L= D=
Testing depth - Casing depth Diameter of borehole
= 2.23m
Therefore,
K=
7.58E-06 m/s
x 0
y 0.37
Column F
Calculations (do not change) 14.01 15.93
143.29
4.96 2.82
LOCATION:Sek. Sukan Bandar Penawar, Kota Tinggi.
TEST NO.:
PT1
CASING DIAMETER:
TESTING DEPTH: TESTING DATE:
12.9 m 26.7.2007
GROUND W. LEVEL:
CASING DEPTH:
FIELD DATA: Time on Clock
10.67 m 140 mm
(Note: O.D)
12.73 m
GRAPH: Time Elapsed (mins) 0 1 2 3 4 5 6 7 8 9 10 15 20
Depth of Water, mbgl = dt 9.601 9.854 10.109 10.300 10.484 10.658 10.826 10.985 11.100 11.227 11.366 11.824 12.065
ht= GWL - dt
ht/ho
3.13 2.88 2.62 2.43 2.25 2.07 1.90 1.75 1.63 1.50 1.36 0.91 0.67
1.00 0.92 0.84 0.78 0.72 0.66 0.61 0.56 0.52 0.48 0.44 0.29 0.21
12.730
Casing G.L
Value of ht/h0
0.37
Column F
dt Depth of water during testing ht
GWL GWL Casing Depth L
0.20
Borehole
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 T Time (min)
Testing Depth D
CALCULATION: K=
A FT
where,
A=
0.02 m2
F=
2.82
T=
12.0 min
K= A= F=
Soil permeability Cross sectional area of borehole Intake Factor (refer to BS5930:1999, Fig. 6, pg. 50, case (d)) 2πL loge[(L/D)+(1+(L/D)2)1/2]
L= D=
Testing depth - Casing depth Diameter of borehole
= 2.23m
Therefore,
K=
7.58E-06 m/s
x 0
y 0.37
Column F
Calculations (do not change) 14.01 15.93
143.29
4.96 2.82
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