Extreme engineering Extreme engineering – part 1 IX-2009 (rev. VI-2012) (Part 00 EE, PP 2007, animation+p/r : ) ready 1 Copyright notice Unauthorised copying of this presentation as whole or in parts in any form or by any means, electronic, photocopying, recording or otherwise, without prior written permision is prohibited.

NAJDER engineering ®NAJDER engineering ® is a consulting company as well as a specialist contractor within civil and foundation engineering. We are preparing technical concepts, design projects, analyses and performing jobs as a subcontractor. Skånska Cementgjuteriet Skanska ABTomasz Najder joined in the period of Skånska Cementgjuteriet (today Skanska AB) as a member of Supervising Team on the project “Second Dry Dock in Gdynia Shipyard”. Stabilator AB Skanska Group Stabilator Sp. z o.o. Skanska Group Tomasz Najder gained his experiences in Stabilator AB (daughter company in Skanska Group) as site manager, project manager and internal consultant (”trouble- shooter”), as Production Manager (Stabilator AB- International Division in Poland), in Polish-Swedish company Stabilator Sp. z o.o. (Skanska Group) as Vice President and Executive Manager. Polibeton Sp. o.o. Najder engineering ® Polimark InternationalAnna Elżbieta Najder (wife) owned Polish company Polibeton Sp. o.o. and now Swedish Najder engineering ® since 1997 (until 2005 operating as Polimark International) – operating globally. Najder engineering ®Anna Monika Najder (daughter) together with Tomasz Najder (as the President of the Board and Executive Manager) owned Polish Najder engineering ® operating in Poland. Now Anna Monika is working as tunnelling consultant in Abu Dhabi. since six generations.Family Najder is working within mining, tunneling and civil engineering since six generations. Family and company history in civil engineering ready 2

3 Tomasz in PragueAnna and Tomasz in IstanbulAnna Monika on IcelandJan in Hallandsås ready

4 Foundation engineering and soil investigations. Reinforcement of existing foundations (underpinning) of industrial buildings, housing estates and ancient monuments (piling, anchors, injections). Tunneling, rock stability high/low-pressure grouting,Tunneling, rock stability and soil improvement (deep mixing method, high/low-pressure grouting, lime-cement columns). Stabilization of slopes and embankments (geogrids, soil reinforcement, drainage, geotextile). Sealing of existing embankments, dams, dikes and waste deposits. Flood defense. Coast protection. Biological engineering, gabion constructions. Leakage and moisture counteraction (insulations, drainages, sealing injections, dilatation repair) in concrete and brickworks structures. Field of activity ready 4

Tomasz Najder Ph.D Civ. Eng. Born 1951 in Gdańsk (Danzig) in Poland M.Sc. Civ. Eng. at Technical University in Gdańsk / Polen Doctors thesis within geotechnical engineering at Technical University in Gdańsk. Since 1982 in Sweden. Employed in Skanska as Site Manager, Contract Manager, Internal Consultant (”trouble-shooter”) Vice President- Executive Manager of Stabilator Polen. Since 2002 Senior Consultant within family company Najder Engineering ® in Stockholm. Dealing with grouting since ready press 5

6 6 ready TNA systems for micropiling and anchoring - probably the most strongest solution in the world (?)

ready 7 TNA Micropile TNA Ø= 0.20 m - drilled version. Ultimate bearing capacity ca. 120 ton TNA TNA micropiles inside the cellar of the castle The Malbork Castle in Poland – build in XII century as Marienburg Schloss, - the largest brick construction in the world - the largest brick construction in the world

Slope instability just after disaster ready 8 Gniew Castle (Poland) Slope stabilization close to Gniew Castle (Poland) Slope stabilisation with TITAN ground anchors micropiles Slope stabilisation with TITAN ground anchors and micropiles - the example of complicated slope protection

TITAN micropiles longitudinal concrete beam ready 9 Slope restoration at it’s top TITAN - drilling and grouting of TITAN anchors

coast line ~ year 1500 ~ 1800 m 1998 ready 10 Slope stabilization of the Trzęsacz church ruin (Poland) at the Baltic See coast - probably the most sofisticated coast- and slope protection in the world (?) 1870

11 ready Concept of protection 1998 Church and coast line 2008

12 the largest sink shaft in the world. Sikfors Sweden ( ): the largest sink shaft in the world. Diameter 20m, weight T ready

13 ready

14 Reubilding and underpinning of industrial buildings ready

15 ready City Tunnel in Hälsingborg (Sweden) - tunneling and underpinning in urban areas

16 Location of the projects on Iceland the huge inflow Breiđalsheiđi and Botnsheiđi Project ; the huge inflow the longest tunnel system in the world Kárahnjúkar Hydropower Project ; the longest tunnel system in the world - performed in probably most dangerous and complicated rock conditions in tunneling history the huge inflow Héðinsfjarðargöng Project ; the huge inflow ready

17 Ísafjörður - Iceland The tunnels of Breiđalsheiđi and Botnsheiđi Breiđaldalur tunnel shortly after huge water inflow Water inflow ~ 1-2m 3 /sec ready

18 Water pressure ~ approx. 60 bars Water inflow ~ 50 l/sec/hole Water temperature ca. +20ºC Inserting of mechanical packers in high water pressure conditions Face after final grouting ready

19 Diversion Tunnels at dam2.4 km(Kar 14) Headrace Tunnel53.0 km (Kar 14) Grouting galleries at dam 0.5 km (Kar 14) Cable tunnel 1.0 km Hraun Diversion 2.0 km Grjótá Diversion 1.75 km Adit km (Kar 14) Adit 22.7 km (Kar 14) Adit km (Kar 14) Surge Tunnel 1.7 km (Kar 14) Drainage Tunnel 0.7 km (Kar 14) Penstocks 0.82 km (2x) Access to Powerhouse 1.0 km Tailrace Tunnel 1.3 km Total Tunnel Length:73.0 km (D&B=10 km, TBM=63 km) ready 19 Kárahnjúkar Hydropower Project

20 ready

21 ready

22 ready

23 ready

Thank You for Your attention! ready 24 THE END

ready Welcome to 25