Geotechnical surveys

Geotechnical Department performs engineering and geological surveys on-shore and off-shore, performs sounding, laboratory research, drilling and sampling, has respective software and uses the following machines and equipment in its work:

Penetration test

CPTU (static penetration test with pore pressure measurement)

CPT-Begemann (static penetration test with pore pressure measurement)

DPSH (dynamic penetration test with super heavy hammer 63,5 kg) sounding depth up to 30 m.
SPT (standard penetration test) sounding depth up to 30 m
FVT(field vane test) sounding depth up to 30 m
PLT (plate loading test):  pavement, embankment etc.

Software

Registration, processing and interpretation of CPT, DPSH, SPT data with WIN-CPT, WIN-DIN, TGSW01 (license “PAGANI geotechnical equipment”, Italy)

Registration and interpretation of CPTU data with TGSW02 (license “PAGANI geotechnical equipment”, Italy)

Interpretation of CPTU data with application of CPTINT version 5.2. ((license of “Civil Engineering Department of the University of British Columbia”, Canada)

Laboratory testing

• physical and mechanical properties of soils
  
• compression tests (oedometer)
  
• triaxial tests (stabilometr)
  
• chemical analysis of soil and ground water

Drilling and sampling

• rotary coring up to 100 m
  
• auger drilling up to 50 m
  
• undisturbed sampling with "Shelby"-sampler

Methods and standards

Latvian construction norm LBN 005-99
Eurocode 7: geotechnical design. ENV 1997. (adopted in Latvia from 20.09.2000)
British Standard Code of practice for site surveys. BS 5930
British Standard Methods of test for Soils for civil engineering purposes. BS 1377
DIN 4125 “Grouted anchors”, DIN 4128 “Grouted piles”, DIN 18134 “Plate testing”
SNiP, GOST.

Equipment

penetrometer TG 73-220 PAGANI (Italy) for static and dynamic sounding (CPTU, CPT-Begemann, DPSH, SPT), anchor type, self-propelled

IFCO-ITS (The Netheirlands)equipment for non-destructive testing of integrity of piles

Drill rig NORDMEYER DSB 1/3.5 (Germany), МВ 1417, engineering and geological drilling, drilling on the water and inclined drilling up to 150 m deep

Device for stretching and testing anchors RCH-603/1003-900 kN (Germany)