Project
Borehole
Samples
One row per SPT sample, as on the D.O. 4 boring log. N may be a number, R, or blows/penetration such as 50/10. Leave lab columns blank where no test was done.
| # | From (m) | To (m) | USCS | Description | SPT N | w (%) | LL | PI | Fines (%) | γ (kN/m³) | Delete |
|---|
Log and design units
Checks
Design units
Consecutive samples of the same soil kind and D.O. 4 consistency band form one unit; units under 1.0 m join a neighbour. Parameters at mid-depth: N60 (energy and rod length), (N1)60 (Liao and Whitman), φ′ by Peck, Hanson and Thornburn, su = 5·N60 (Stroud). Lab values, when added in the Full version, override these.