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CPT Interpretations `�--� — The parameters selected for output from the program are often specific to a particular project As such, not all of the interpreted parameters listed in Table 1 may be included In the output files delivered with this . report ' Table 7 CPT Interpretation Methods ' Interpreted Parameter Description Equation Ref Mid Layer Depth ' Depth —-__- ��_ ------ -��- Depth(Layer Top} +Depth{Layer Bottom)/2 0 (where interpretations are done at each point then Mrd Layer Depth=Recanted Depth) Elevation Elevation of Mid Layer based on sounding collar elevation Elevation=Collar Elevation-Depth - - supplied by client Avgqc Averaged recorded tip value(q.) Avggc n 0.1 - -----_--- _ - - -- ---- n=1 when interpretations are done at each point Avggt Averaged corrected tip(qO where Avggt 1£q 4,=q.+U a)•u n ., ' ---- - --- -- - ------- __��_-------- n=1 when interpretations are done at each point- _-- - Avgfs Averaged sleeve friction {s) Avgfs=1�is n y -- n=1 when interpretations are done at each point 1 Averaged friction ratio(RF)where friction ratio is defined __ - Rf -- - - _ - AvgRf as AvgRf=1001% Av s fs AvggY Rf=1D0%.9r n=1 when interpretations are done at each point Avgu Averaged dynamic pore pressure(u) Avg"' YU, n=1 when interpretations aro done at each point ' Averaged Resistivity(this data is not always available Avgu=1 RESISTIVITY, Avg Res since it is a specialized test requinng an additional n,_, module) n=1 when interpretations are done at each point Averaged UV1F ultra-viaiet induced fluorescence (this- 1 AvgUVIF data is not always available since it is a specialized test Avg„ _n I.L jF requiring an additional module) -- -- _n=1 when interpretations are done at each point Av Tem _ Averaged Temperature(this data is not always available Avgu= ETEMPERATURE, y$ _-P-- since it is a specialized test) -- _ + - - ---- n -1 ^ - n=1 when interpretations are done_at each point_ Averaged Gamma Counts (this data is not always _ -- AvgGamma available since it is a specialized test requiring an Avg"=„GAMMA additional module) F - - - n=1 when interpretations are done at each point SBT f Soil Behavior Type as defined by Robertson and See Figure 1 - 2,5 Campanella _ Und Weight of soil determined from one of the following user selectable options U Wt 1) uniform value See references 5 ' - --- - 2) value assigned to each SST zone 3) user supplied unit weight profile T stress Total vertical overburden stress at Mid Layer Depth TSrress= y h, A layer is defined as the averaging interval speed by where r is layer unit weight 6v the user For data interpreted at each point the Mid Layer h,is layer thickness Depth is the same as the recorded depth EGG ' CPTSUMM-1 20C-Rev 02-07-31