Rail Baltica seminar

1.  Sipti Infra Oy started in Helsinki 2012
 Annual turnover about 1 Million €uro
 Designers’ expieriences 5-35 years of geotechnical
design/ designer
 10 geotechnical designers, 6 M.Sc., 7 official
competence qualifications
 Over 20 designers in total with partner companies;
structural and geotechnical design
SIPTI INFRA

2. Downtown Ground Engineering
 Retaining walls
 Jet grouting
 Stability
 Settlement prevention; deep mixing and lightweight
structures
 Understanding of risks
 Understanding of advantages and disadvantages of
different work techniques
 Cost awareness
Expertise of Sipti Infra

3. Completed or ongoing projects
Common client
Constructability reports, Helsinki and Vantaa
Central library, Töölö Bay, Helsinki
Landfill design, Espoo and Helsinki
Flight terminals
Metro onground structures
Renovation of streets in the city center
Private clients
Nucler power plant ground- and rock investigations
Apartment buildings in the city
Underground hyper market in city center
Windmills
Pier in Indonesia
Construction companies
Apartment buildings in earlier harbour areas, fill
grounds
Shopping Mall Stockmann and Okhta in St.
Petersburg
Principal suggestions and checking of ground
design in Rostov (DON), St. Petersburg, Finland
Own design in road projects
Retaining walls, Ground Engineering, pipe lines to
housing and commercial buildings

4. Constructability reports
Hernesaari Industrial to Housing

5. For housing in the sea

6. Renovation of footings
Buildings and railroads
OSLA Porvoo
Siuronkosken maatukien
injektointi

7. Retaining walls

8. Housing ground engineering

9. Deep mixing

10. Stability of road embankment

11. Deep excavations
Tikkuparkki Okhta Mall,Pietari

12. Dimensioning example

13. Underpinning of neighbouring
buildings with jet grouting

14. Inside or outside

15. Helsinki Grand Casino
temporarily on steel piles, finally 4 floors under
existing house

16. Stockmann StP, 10000 m2 next to
neighbours, on sand and clay
Top Down excavation,16
meters deep
Stiff retaining wall

17. Steep slope and retaining wall

18. Deep shaft with jet grouting

19. Design by modelling;
Existing structures

20. Design by modelling
Designed infra structures

21. Thanks