BEARING CAPACITY TESTS

Execution of testing.

Once a testing place has been selected, it should be appropriately prepared for the test. If the test material is made of particles larger than 10 mm (coarse gravel, crushed stone, pebbles), it is recommended to create a fine sand „cushion” under the load plate. The main function of the sand „cushion” is the levelling of the surface for the plate to take horizontal position, as well as close contact with the surface to be tested. After its formation, the plate is placed, and the equipment and the electronic measuring device are connected. At the start of the testing, the falling weight device is lowered three times, creating a continuous, sequential impulse on the load plate. These three preliminary hits are not taken into account in the calculations; their main purpose is the pre-compaction of the soil for further testing. After completing the preliminary hits, the measurement device offers to commence testing, within the framework of which the falling weight device is also lowered three times, but the obtained results for each time are stored in the measurement device's memory and are used in calculations. After the third measurement, the performance measurement device will display the settlement amplitude s(m) and the dynamic deformation module Evd on the screen. Results can be printed at the object (the measurement device is equipped with a check printer) on site, or processed and properly executed in the original computer program at the office.