2. Mata kuliah: S0892 – Ground Improvement Method Tahun: 2010 Case Study Session 12 - 13

3. Bina Nusantara COURSE 5 Content: Case Study 1 – Jordan Hall of Science University of Notre Dame Case Study 2 – Commercial Complex Kuala Lumpur City Case Study 3 – Interchange at Kampung Pasir Dalam Malaysia Case Study 4 – Road Construction Thailand

4. Bina Nusantara CASE STUDY 1 LOCATION

5. Bina Nusantara CASE STUDY 1

6. Bina Nusantara CASE STUDY 1 PROJECT REQUIREMENTS Four-story building with slab on-grade and small basement area for mechanical Structural concrete and steel framing with concrete masonry units and brick facade/cast stone detailing Column loads: 800 to 1,000 kips Building footprint of 75,000 sq ft. Two 250 – seat lecture halls Greenhouse Teaching labs Office Space Roof top observatory Existing utility tunnel

7. Bina Nusantara CASE STUDY 1 GENERALIZED SUBSURFACE PROFILE

8. Bina Nusantara CASE STUDY 1 FOUNDATION ALTERNATIVES Spread Foundation Scheme –2 ksf –1 to 2 in. settlement Deep Foundation Scheme (driven or drilled elements) Ground Improvement Technique –Vibro-compaction and use spread foundations designed for 10 ksf with 1/2 in. settlement GROUND IMPROVEMENT WAS CHOSEN

9. Bina Nusantara CASE STUDY 1

10. Bina Nusantara CASE STUDY 1

11. Bina Nusantara CASE STUDY 1

12. Bina Nusantara CASE STUDY 1

13. Bina Nusantara CASE STUDY 1

14. Bina Nusantara CASE STUDY 1

15. Bina Nusantara CASE STUDY 1

16. Bina Nusantara CASE STUDY 1 TREATMENT RESULTS BEFORE AFTER

17. Bina Nusantara CASE STUDY 2 LOCATION

18. Bina Nusantara CASE STUDY 2 Soil Condition The subsoil comprised of loose silty sand deposits and ex-mining soils with SPT values in the range of 5 blows/ft to 12 blows/ft. Underlying this loose soil layers, karstic limestone formation was found with extremely varying rock-head levels ranging between 3m and 15m below existing ground level. Overhanging boulders and pinnacles are common; hence the founding level of the bedrock formation was unpredictable. The ground water table was found to be at about 1m to 2m below existing ground level.

19. Bina Nusantara CASE STUDY 2

20. Bina Nusantara CASE STUDY 2 EXECUTION OF DSM WORK

21. Bina Nusantara CASE STUDY 2 RESULT Excavation works proceeded upon completion of DSM installation works and subsequent curing period of only 14days. Bedrock underneath the DSM columns was excavated using the hydraulic breaker and blasting works. The installed DSM columns were able to withstand the high vibration induced by rock excavation works. As part of quality control procedure, cores from DSM columns were extracted and tested in a laboratory for UCS. The test results indicated an UCS in the range of 1MPa to 3MPa. In addition, wall movement was monitored during excavation works, which showed a maximum horizontal movement of about 30mm to 40mm.

22. Bina Nusantara CASE STUDY 3 LAYOUT

23. Bina Nusantara CASE STUDY 3

24. Bina Nusantara CASE STUDY 3 STONE COLUMN

25. Bina Nusantara CASE STUDY 3

26. Bina Nusantara CASE STUDY 3

27. Bina Nusantara CASE STUDY 4 Location : South Thailand Purpose : Road Construction Ground Improvement Type : Jet Grouting Type of Nature Soil : Soft Clay

28. Bina Nusantara CASE STUDY 4

29. Bina Nusantara CASE STUDY 4 TYPICAL CROSS SECTION

30. Bina Nusantara CASE STUDY 4 CONSTRUCTION PROCESS

31. Bina Nusantara CASE STUDY 4

32. Bina Nusantara CASE STUDY 4 Unconfined compressive strength test results of core samples from the jet grouted piles exceed the design target value of 600 kPa.