The terratek makes the following tests in situ.

Trials piezocone (CPTU):

The test CPTU uses a tool that is slowly introduced in soil to measure its properties. The CPTU provides tip resistance, pore pressure and skin friction. Data from CPTU are sent directly to a computer, which allows the analysis.

The CPTU aims to obtain the following information:

• Detailed stratigraphy of the land;
• Detection thin lenses of sand and clay
• Weather resistance and compressibility;
• Coefficient of consolidation and permeability of fine soil;
• Load capacity of piles and shallow foundations;
• Estimated settlements or settlement of embankments and foundations

• Technical standards CPTU:: The piezocones to the CPTU Terratek are 10 cm2 and 100 MPa of resilience-edge and meet ASTM D5788 and ABNT MB-3406.
• Measurement of tip resistance and friction:: The sensor design is based on more than 10 years of experience of the company in CPTU. The load cells tip and lateral friction had been projected in order to eliminate the crossover effect (cross-talk) between points and friction. The ASTM limits this effect to 2% but the cones CPTU of Terratek this is null.
• Geophones stunts: The Terratek employs CPTU seismic with geophones stunts, ie two sets of geophones away from 0.5 m. This technique allows for tests CPTU two signals are obtained simultaneously from a single blow. This greatly increases the quality of the CPTU test, since the two signals have the same quality.
• Calibration:we have software for data processing CPTU in Windows with friendly interface in Portuguese, with self-explanatory modes reset or baseline before and after the test CPTU penetration, seismic testing and dissipation.

Other tests performed:

• Vane shear tests (VST)
• Marchetti dilatometer (DMT)
• The Ménard pressuremeter (PMT)
• Type Downhole Seismic Testing