Feature

HMP -Pro

reasonably priced, compact, comfortable

• Handy measuring instrument with thermal printer within a aluminum case
• Automatic data transfer, 200 tests can be stored
• Comfortable user interface
• Evaluation, displaying and printout immediately at the site
• PC-connection, editing/protocol printout possible

HMP -Pro

... compact, very comfortable evaluation

• Measuring computer with membrane keyoard, graphic representation and menu controlled user interface
• Additional PC-keyboard, big display
• Displaying the load settlement lines already on the display
• 250 tests can be stored, comprehensive data management
• Evaluation, displaying and printout immediately at the site
• PC-connection, editing/protocol printout possible

Spesification

Application

The Static Plate Load Test applies in earthworks and foundation engineering as well as road construction in order to determine load settlement lines and by this to evaluate the deformability and the load capacity of the soil. The static plate load test is indicated in DIN 18 134.

Test procedure 

With the static plate load test the examining soil layer is repeatedly in steps loaded and relieved by a circular load plate by means of a load device. Via the load equipment (hydraulic pump with pneumatic cylinder) the load applies to the plate in 6-8 equal load steps. The settlement measuring instrument consists of the carrier frame with sensing arm and dial gauge. As a counterbalance of the load device a heavy-weight vehicle is used.

The indentation of the load plate into the soil, generated with every load step, is indicated via the dial gauge. The settlements of every load step and the corresponding mean normal stress below the load plate appear as test values. Subsequent to the last load step the relief and a second loading similar to the first loading takes place. For the test evaluation these values are shown in a corresponding diagramme as load settlement lines.

The modulus of deformation Ev is determined from the load settlement line of the first load (Ev1) and the second load (Ev2). Through the first loading a certain remaining deformation always obtains and therefore the proportion of the accordingly higher Ev2 value to the Ev1 value provides an indication to the attained compaction.

The load settlement lines can be read with the HMP-Pro directly on the display.

At both device versions HMP-Pro and HMP-Pro the
test results can be printed out immediately at the site via thermal printer or be revised later in the office on PC.