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From page 22... ... and "Geotechnical engineers expect too much from geophysics (GPR, seismic refraction, resistivity) on every project they consider its use on (i.e., if it can't give them the exact information they want, it is no good" (New Hampshire DOT) Read the entire page →
From page 23... ... Reid, personal 6 19 9 6 7 2 9 0 10 20 30 40 50 60 N um be r o f S uc ce ss fu l P ro jec ts 0 Projects 1 to 5 Projects 6 to 10 Projects 11 to 20 Projects 21 to 100 Projects >100 Projects No Response N=58 10 32 2 0 1 1 12 0 10 20 30 40 50 60 N um be r o f U ns u cc es sf ul P ro jec ts 0 Projects 1 to 5 Projects 6 to 10 Projects 11 to 20 Projects 21 to 100 Projects > 100 Projects No Response N=58 47 2 47 2 38 9 34 8 32 7 29 12 4 0 10 20 30 40 50 60 R es po nd en ts Yes No No Response N=271 Training Knowledge Experience Standards Easy Software Easy Equipment Database of Qualified Providers FIGURE 23 Number of successful geophysical projects within the past 5 years. FIGURE 24 Number of unsuccessful geophysics projects within the past 5 years. Read the entire page →
From page 24... ... Port Authority of New York Microtunneling at JFK International Airport Seismic (Crosshole) Microtunnel steel casings under an S & New Jersey SASW active runway S Saskatchewan Stony Rapids Airfield Case History 2 -- Appendix D GPR Runway subsidence S EM Delineate landfill SWisconsin DOT US Highway 53 Birch Street Interchange Site Case History 4 -- Appendix D GPR Delineate landfill S Notes: U = unsuccessful project case history; S = successful project case history; GPR = ground penetrating radar; EM = electromagnetic; FDEM = frequency-domain electromagnetic; SASW = Spectral Analysis of Surface Waves. Read the entire page →
From page 25... ... . With that said, it is not that difficult to use assumed ranges of personnel rates and predict the number of crew members necessary for a particular technique (e.g., GPR generally needs only one person, whereas refraction can use a two- to fourperson crew depending on site conditions and schedule) Read the entire page →

From page 22...

... and "Geotechnical engineers expect too much from geophysics (GPR, seismic refraction, resistivity) on every project they consider its use on (i.e., if it can't give them the exact information they want, it is no good" (New Hampshire DOT)

Read the entire page →

From page 23...

... Reid, personal 6 19 9 6 7 2 9 0 10 20 30 40 50 60 N um be r o f S uc ce ss fu l P ro jec ts 0 Projects 1 to 5 Projects 6 to 10 Projects 11 to 20 Projects 21 to 100 Projects >100 Projects No Response N=58 10 32 2 0 1 1 12 0 10 20 30 40 50 60 N um be r o f U ns u cc es sf ul P ro jec ts 0 Projects 1 to 5 Projects 6 to 10 Projects 11 to 20 Projects 21 to 100 Projects > 100 Projects No Response N=58 47 2 47 2 38 9 34 8 32 7 29 12 4 0 10 20 30 40 50 60 R es po nd en ts Yes No No Response N=271 Training Knowledge Experience Standards Easy Software Easy Equipment Database of Qualified Providers FIGURE 23 Number of successful geophysical projects within the past 5 years. FIGURE 24 Number of unsuccessful geophysics projects within the past 5 years.

Read the entire page →

From page 24...

... Port Authority of New York Microtunneling at JFK International Airport Seismic (Crosshole) Microtunnel steel casings under an S & New Jersey SASW active runway S Saskatchewan Stony Rapids Airfield Case History 2 -- Appendix D GPR Runway subsidence S EM Delineate landfill SWisconsin DOT US Highway 53 Birch Street Interchange Site Case History 4 -- Appendix D GPR Delineate landfill S Notes: U = unsuccessful project case history; S = successful project case history; GPR = ground penetrating radar; EM = electromagnetic; FDEM = frequency-domain electromagnetic; SASW = Spectral Analysis of Surface Waves.

Read the entire page →

From page 25...

... . With that said, it is not that difficult to use assumed ranges of personnel rates and predict the number of crew members necessary for a particular technique (e.g., GPR generally needs only one person, whereas refraction can use a two- to fourperson crew depending on site conditions and schedule)

Read the entire page →

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