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Compiled Reference Documents - MCU25/0091 (As Published)
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CONSTANT HEAD TEST
Talsma Hallam Method AS/NZ 1547:2000 Appendix 4.1F
Client URBN Town Planning Hole No TP04
Project ECOCABINS Test Date 29/07/2025
Location 224 Moran Group Rd, Kin Kin Project No. J002915
dh
Tested by TS Checked
Co-ordinates 488087 / 7100948
Depth of Hole (Lh) 38.00 cm Vegetation
Tube below Surface (Lt) 15.00 cm Rootlets to 0.2m
Length to Air Inlet (Ls) 10.0 cm Mature trees adjacent ~6m
Test Section (H) 23 cm Soil moisture prior to test Lt
Diameter of test section (Dh) 6.00 cm W=PL / Moist Dt
Ls Lh
Diameter of tube (Dt) 4.330 cm
Static depth to gw (hs) 93.00 cm General comments (soil structure, H
Dh
Depth Impermeable Layer (S) 150.00 cm macro pores, water logging etc)
Radius of Tube (R) 2.17 cm Topsoil / Resdiual soil
Radius of Test Section (r) 3.00 cm S
Impermeable Layer
i = 1, 2, 3, ....n
120 Level in Difference
i Time Tube in level
t h dh K
100 (min) (cm) (cm) (m/s)
1 0.00 93.000 0.000 #DIV/0!
2 1.50 92.500 -0.500 #DIV/0!
80
3 2.50 92.000 -3.000 #DIV/0!
4 4.00 90.000 -4.000 #DIV/0!
60 h 5 4.33 89.000 -5.000 #DIV/0!
6 4.66 88.000 -6.000 #DIV/0!
7 5.0 87.0 -7.000 #DIV/0!
40 8 5.2 86.0 -8.000 #DIV/0!
9 5.5 85.0 -9.000 #DIV/0!
10 5.8 84.0 -10.000 #DIV/0!
20 11 6.0 83.0 -11.000 #DIV/0!
12 6.3 82.0 -12.000 #DIV/0!
0 13 6.6 81.0 -13.000 #DIV/0!
0.00 5.00 10.00 15.00 20.00 25.00 14 7.0 80.0 -18.000 #DIV/0!
15 8.3 75.0 -23.000 #DIV/0!
Time t (min) y = -3.2685x + 101.49
16 9.8 70.0 -28.000 #DIV/0!
R² = 0.9914
17 11.3 65.0 -33.000 #DIV/0!
18 12.8 60.0 -34.000 #DIV/0!
19 13.2 59.0 -35.000 #DIV/0!
Calculation of Hydraulic Conductivity, K : 20 13.5 58.0 -36.000 #DIV/0!
21 13.8 57.0 -37.000 #DIV/0!
π R 2 ∆h 22 14.0 56.0 -38.000 #DIV/0!
0.5sinh-1 H − r r
4.4 2 + 0.25 + 23 14.3 55.0 -39.000 #DIV/0!
∆t 2r H H
24 14.5 54.0 -40.000 #DIV/0!
K =
2πH 2 25 14.8 53.0 -41.000 #DIV/0!
26 15.0 52.0 -42.000 #DIV/0!
27 15.5 51.0 -43.000 #DIV/0!
28 15.8 50.0 -48.000 #DIV/0!
29 17.3 45.0 -53.000 #DIV/0!
30 18.7 40.0 -58.000 #DIV/0!
Equilibrium Hydraulic Conductivity : 31 20.2 35.0 -63.000 #DIV/0!
32 21.5 30.0 -65.000 #DIV/0!
Time Height 33 22.2 28.0 -68.000 #DIV/0!
Start from 4 4.0 90.0 34 22.8 25.0 -93.000 #DIV/0!
End at 34 22.8 25.0 35
K = -7.3E-06 m/sec 36
FILE LOCATION: C:\Users\tsutton\OneDrive - Core Consultants\Desktop\[J2915_Talsma hallam (Constant Head)_TP4.xls]Input
Golder Associates Forms/Hydro/H001/Feb04/JJV
Document Set ID: 24031832
Version: 1, Version Date: 14/08/2025
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