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Non geotechnical web-related tips
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Main Variables
| GAMMA top | = | Average natural unit weight of the soil between Ground Surface and Zinitial (Zinitial = Z of the first DMT readings), normalized to Gamwater. Normal Gamtop values = 1.6 to 2.2. |
| Z | = | Depth below Ground Surface. In Offshore tests, Z is depth below Seabottom. |
| Zwater | = | Depth below Ground Surface of water table. In offshore tests the water table is above Ground Surface (=Seabottom), hence Zwater is negative. E.g. if waterheight=8m, Zwater=-8. If "water is absent" (in the sense that water is deeper than testing depth), don't input Zwater=0 (it would be interpreted as Watertable = Ground Surface) but input any depth Zwater > Zfinal. |
Advanced Variables
| Zabs | = | Absolute elevation of Ground Surface. Permits (in the subsequent programs) to write in the Z scale absolute elevations instead of depths below Ground Surface. In absence of such need, or if unknown, Zabs is input as 0. (The above form defaults to : Zabs=0). |
| Zm | = | Zero of the gage ZM (gage reading when vented to atmospheric pressure). However Zm in general must be input as 0. In fact, since Delta A & DeltaB - with present equipment - are measured with the same gage used for reading A & B, ZM is also contained in Delta A & Delta B. This results in a compensation. Conclusion : set Zm =0. (The above form defaults to : Zm=0). |
More information on structure of "file.dat" - as created by this form, and used by the reduction programs.
More information on membrane calibration - and how to select average DeltaA-DeltaB.