Unformatted text preview: (2) Sample is driven not pushed Both of these cause excessive sample disturbance 5. See comparison in site exploration handout 6. Boring log should look like log on page 58 of Coduto. The N value for each soil layer is the sum of the last 12 inches of driving the sampler (8, 15, 19, 23, 52, 74, refusal for the 7 layers )...
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- Fall '09
- Geotechnical Engineering, Auger, drilling mud, excessive sample disturbance, site exploration handout