GIS Applications in Geotechnical    (Soils) & Environmental           Engineering Hawaii Pacific GIS Conference 2012      ...
Geotechnical Consulting                          2
Slope stability study, nearHāwī, Big Island                              3
Dam safety study, Kaua‛i                           Geotechnical                           investigation, Mauna            ...
Compaction testingon new waterline,Moloka‛i                     Mass grading for                     housing at Ford      ...
Pile driving, ArizonaMemorial Visitor Center,Pearl Harbor                           Geotechnical test pit for             ...
What does this have to do with GIS?                                      7
Maps for Project Reports
Location maps           9
Geologicmapping           10
Geologicmapping;differing  soils            11
Historicgeologicmapping           12
Soilmapping          13
Maps for Field Investigations
Mapping sample locations –Step 1: layout points based on plan   15
Mapping sample locations –Step 2: georeference plan    16
Mapping sample locations –Step 3: remove plan          17
Mapping sample locations –Step 4: add coordinates; grid   18
Example on large project   19
Historical Landforms and  Planned Construction                           20
Map depictingformer sump and boring  locations                21
Location           22
Georeference historical map   23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Georeference historical photo   38
39
40
Approximate the boundary based on     historical maps & photos       41
Overlay site plan   42
Map book for road design                           43
44
45
46
47
48
Hydrology and hydrogeology                             49
Slope stabilization,Nu‛uanu Stream,O‛ahu                       Sheet piling,                       Middle Street,         ...
Stormwater Runoff and GIS                            51
Calculating  runoff to   plan forconstruction               52
53
Surface water hydraulic analysis   Problem: stormwater washing out road    during construction   Who is responsible for ...
Analysis procedure   Map problem areas   Map contributing drainage area(s) for    each   Calculate design flow for each...
56
57
Analysis continued   Calculate flows from actual storm   Compare with design flows (design was    greater)   Estimate n...
59
Environmental Consulting                    Environmental                    sampling at                    Kalaeloa, O‛ah...
Environmental Investigations                       Direct push                       drilling for                       gr...
Environmentalsoil sampling,Hanua Street,Kapolei                 62
DETERMINING SAMPLE    LOCATIONS                     63
64
65
Mapping sample   locations     66
67
Environmental PermittingExcavation thatwill requiredewatering,Honolulu Zoo,Waikīkī                              68
Environmental  Permitting                69
Environmental  Permitting                70
Environmental  Planning                71
ROCKFALLS            72
Boulder problem                  73
74
From whose land did it come?                               75
Step 1: Map possible source basedon contours                         76
Georeference historical image                                77
Georeferencing is imprecise   Nature of aerial imagery from low-flying    aircraft       Distortion away from flightline...
This one is better due to increasedtie-points                            79
Multiple historical images may help                                      80
Landowners             81
Analysis   Boulder came from state land   Unclear if it was from land previously    “worked”   Recommend field investig...
IMAGES FOR COMMUNITY      MEETINGS                       83
Rock slide investigation,Koko Crater, O‛ahu                            84
85
Boulder investigation,Koko Crater, O‛ahu                         86
Images for community presentations                                                     $Boulder locations & elevationsKoko...
Rock slide probable path                           $                               88
89
Rock slide probable path$                               90
Rock slide    probable path$                    91
QUESTIONS?             92
Mahalo!        Contact info:        Elise Leroux  eleroux@masafujioka.com     tel. (808) 484-5366  Masa Fujioka & Associat...
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Hawaii Pacific GIS Conference 2012: Engineering and Public Works - GIS Applications in Geotechnical (Soils) & Environmental Engineering

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Hawaii Pacific GIS Conference 2012: Engineering and Public Works - GIS Applications in Geotechnical (Soils) & Environmental Engineering

  1. 1. GIS Applications in Geotechnical (Soils) & Environmental Engineering Hawaii Pacific GIS Conference 2012 March 7, 2012 Elise Leroux, Associate 1
  2. 2. Geotechnical Consulting 2
  3. 3. Slope stability study, nearHāwī, Big Island 3
  4. 4. Dam safety study, Kaua‛i Geotechnical investigation, Mauna Lani, Big Island 4
  5. 5. Compaction testingon new waterline,Moloka‛i Mass grading for housing at Ford Island, O‛ahu 5
  6. 6. Pile driving, ArizonaMemorial Visitor Center,Pearl Harbor Geotechnical test pit for Waimānalo Stream restoration 6
  7. 7. What does this have to do with GIS? 7
  8. 8. Maps for Project Reports
  9. 9. Location maps 9
  10. 10. Geologicmapping 10
  11. 11. Geologicmapping;differing soils 11
  12. 12. Historicgeologicmapping 12
  13. 13. Soilmapping 13
  14. 14. Maps for Field Investigations
  15. 15. Mapping sample locations –Step 1: layout points based on plan 15
  16. 16. Mapping sample locations –Step 2: georeference plan 16
  17. 17. Mapping sample locations –Step 3: remove plan 17
  18. 18. Mapping sample locations –Step 4: add coordinates; grid 18
  19. 19. Example on large project 19
  20. 20. Historical Landforms and Planned Construction 20
  21. 21. Map depictingformer sump and boring locations 21
  22. 22. Location 22
  23. 23. Georeference historical map 23
  24. 24. 24
  25. 25. 25
  26. 26. 26
  27. 27. 27
  28. 28. 28
  29. 29. 29
  30. 30. 30
  31. 31. 31
  32. 32. 32
  33. 33. 33
  34. 34. 34
  35. 35. 35
  36. 36. 36
  37. 37. 37
  38. 38. Georeference historical photo 38
  39. 39. 39
  40. 40. 40
  41. 41. Approximate the boundary based on historical maps & photos 41
  42. 42. Overlay site plan 42
  43. 43. Map book for road design 43
  44. 44. 44
  45. 45. 45
  46. 46. 46
  47. 47. 47
  48. 48. 48
  49. 49. Hydrology and hydrogeology 49
  50. 50. Slope stabilization,Nu‛uanu Stream,O‛ahu Sheet piling, Middle Street, Honolulu 50
  51. 51. Stormwater Runoff and GIS 51
  52. 52. Calculating runoff to plan forconstruction 52
  53. 53. 53
  54. 54. Surface water hydraulic analysis Problem: stormwater washing out road during construction Who is responsible for extra costs? 54
  55. 55. Analysis procedure Map problem areas Map contributing drainage area(s) for each Calculate design flow for each drainage area Calculate design drainage for each problem area  Based on road linear foot 55
  56. 56. 56
  57. 57. 57
  58. 58. Analysis continued Calculate flows from actual storm Compare with design flows (design was greater) Estimate necessary size of diversion structures Compare with original design 58
  59. 59. 59
  60. 60. Environmental Consulting Environmental sampling at Kalaeloa, O‛ahu 60
  61. 61. Environmental Investigations Direct push drilling for groundwater contamination investigation, Waikīkī 61
  62. 62. Environmentalsoil sampling,Hanua Street,Kapolei 62
  63. 63. DETERMINING SAMPLE LOCATIONS 63
  64. 64. 64
  65. 65. 65
  66. 66. Mapping sample locations 66
  67. 67. 67
  68. 68. Environmental PermittingExcavation thatwill requiredewatering,Honolulu Zoo,Waikīkī 68
  69. 69. Environmental Permitting 69
  70. 70. Environmental Permitting 70
  71. 71. Environmental Planning 71
  72. 72. ROCKFALLS 72
  73. 73. Boulder problem 73
  74. 74. 74
  75. 75. From whose land did it come? 75
  76. 76. Step 1: Map possible source basedon contours 76
  77. 77. Georeference historical image 77
  78. 78. Georeferencing is imprecise Nature of aerial imagery from low-flying aircraft  Distortion away from flightline Vast changes in landscape & development  Few tie-points 78
  79. 79. This one is better due to increasedtie-points 79
  80. 80. Multiple historical images may help 80
  81. 81. Landowners 81
  82. 82. Analysis Boulder came from state land Unclear if it was from land previously “worked” Recommend field investigation  May be possible to determine exact location  Can assess future hazards 82
  83. 83. IMAGES FOR COMMUNITY MEETINGS 83
  84. 84. Rock slide investigation,Koko Crater, O‛ahu 84
  85. 85. 85
  86. 86. Boulder investigation,Koko Crater, O‛ahu 86
  87. 87. Images for community presentations $Boulder locations & elevationsKoko Crater Rock Fall Investigation,April 2009 87
  88. 88. Rock slide probable path $ 88
  89. 89. 89
  90. 90. Rock slide probable path$ 90
  91. 91. Rock slide probable path$ 91
  92. 92. QUESTIONS? 92
  93. 93. Mahalo! Contact info: Elise Leroux eleroux@masafujioka.com tel. (808) 484-5366 Masa Fujioka & Associates98-021 Kamehameha Hwy #337 Aiea, HI 06701 93

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