The apparatus has been developed on the basis of the design of British Building Reasearch Station by
L.F. Cooling and H.Q. Golder. It is a simple and portable apparatus and is used in both laboratory and
field for testing unconfined compressive strength of undisturbed specimen of cohesive non-fissured soils
taken from a bore hole, a trial pit on opan excavation. A specimen of 38 mm dia x 76 mm long is placed in
between two plates and the load is applied by means of hand operated lead screw which expands a
calibrated spring. The load deformation curve is plotted autographically by a recording pencil moving
across the chart. Strength figurs can be determinated from the completed chart by super imposing a
specially calibrated transparent mask over the chart.
