Software Update

1. GPC N_GAPA Suite (for either Field or Office Laptop)

2. GPC (only needed for Field Laptop)

Download the hyperlinked files above. Change them to *.exe file (some Windows does not allow to upload/ download .exe file, so we removed the "exe" extension). Please note, some Windows Explorer hides "exe" extension by default, so after you change the extension to .exe, it may still looks as if it has no extension - But as long as you see the file "Type" changes to "Application", you're good to go. Then replace (i.e., overwrite) the files into:      C:\Programdata\GPC\

May 12, 2026:

GPC Review now allows user to enter NOT ROUNDED LP values into LP Table. This will allow GPC Plot to display more detailed table, such as the case where 20 blows/in practical refusal to be presented on a separate row from the foot. For Field Laptop, download both hyperlinked files. For Office Computer, download just the GPC N_GAPA Suite file.

April 25, 2026:

A bug was found when the accelerometers were mounted up-side-down (i.e., inverted), the program adjusted the displacement record correctly (to the inspector's LP record, if "BC Match Level" > 0 was used ), but did not display the displacement curve correctly. Update fixes this bug. Some other cosmetic updates (such as default file names when PDF file out).

When  driving in pinnacle rock condition  (i.e., sloping rock), the concrete pile toe can walk away along the sloping rock, causing micro-cracks (typically within bottom 1/3 of the pile). WC would be slower (i.e., pile looks like it's longer). Then when real damage happens, an early reflection (prior to the toe) will show up.  In this situation, uncheck the "Leave WC constant" (in ADVANCE tab) will help detect the variable WC as pile driving goes, which gives better pile integrity evaluation. Default is to "Leave WC constant" in most other situation (because "longer" pile could be due to soil plugs, or due to very soft gradual rise in some weird diesel hammer. The update has better algorithm for variable WC.

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