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Unconfined
compression test |
Location |
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Job ref. |
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Borehole/Pit no. |
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Soil
description |
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Sample No. |
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Depth excavated |
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Date |
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Group/Type |
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Date Form |
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Test method BS1377: Part 7: 1990
7.2 |
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Type of specimen
Undisturbed/compacted* |
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Nominal diameter |
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Preparation
procedure |
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Specimen
details |
Initially |
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After test |
Sketch showing specimen |
location in
original sample |
Diameter |
D mm |
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Mass |
g |
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Area |
Ao mm2 |
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Dry mass |
g |
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Length |
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Lo mm |
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Moisture |
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Volume |
cm3 |
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Content |
% |
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Mass |
g |
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Density |
Mg/m3 |
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Compression test |
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Machine no. |
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Rate of deformation |
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mm/min |
Force
device no. |
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Mean calibration |
N/division |
Stress factor |
kPa/division |
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Deformation |
Compression |
Strain |
Force gauge |
Axial force |
Corrected |
Axial stress |
gauge |
of specimen |
e = DL |
reading |
p |
area |
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reading |
DL |
Lo |
N |
A = |
Ao |
s1 = |
1000P |
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mm |
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1-e |
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A |
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mm2 |
kPa |
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Maximum axial stress |
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Sketch of |
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failure
conditions |
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kPa |
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Axial strain at failure |
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inclination of |
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% |
shear surface |
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Unconfined compressive strength qu |
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kPa |
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Operator |
Checked |
Approved |
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* Delete as
appropriate |
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Form 7F |
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