Borehole

Strata / Samples

N = SPT N-value (blows/ft). Put RQD % in N for rock cores and it renders green.
USCS drives the graphic pattern: CL/CH clay · SC/SM sandy clay · SP/SW sand · SH shale · GM/GC gravel.

Laboratory test results

PI auto-calculates from LL − PL. Lab data prints on the log sheet below the boring log.
+#4 ret % = percent retained on the #4 sieve · C_u, C_c from gradation — used by the auto-classifier (ASTM D2487, inorganic soils).

Photos

Up to 6 photos per boring, downscaled for storage. Photos print on the log sheet.

CPT Soundings

Sounding setup

σ_v0 from γ above WT (surface → GW) and γ below WT (GW → tip); u₀ = 9.81·(z − GW) below GW, 0 above; blank GW = dry profile. Defaults γ ≈ 18 / 19.5 kN/m³ (≈ 115 / 124 pcf).
q_t = q_c + u₂(1 − a) · R_f = f_s/(q_t − σ_v0)·100 · Q_t = (q_t − σ_v0)/σ′_v0 · B_q = (u₂ − u₀)/(q_t − σ_v0).
SBT zones 1–6 via index I_c (Robertson & Wride 1998, after Robertson 1990); zones 7–9 via the chart's overconsolidated/cemented envelope.

Data

Import replaces this sounding's data. Columns: depth, q_c, f_s, u₂ — header row auto-detected, comma/tab/space separated.