Geotech Portfolio
James Huff - FGCU - Geothechnical Engineering 1 - Dr. Kunberger - CRN10385
Geotechnical Engineering 1 Portfolio | |
|---|---|
CEG 3011C CRN 10385 Dr. Kunberger | |
| James Huff - Portfolio | |
| Coordinates: 26°33′20″N 81°44′58″W / 26.5556°N 81.7494°WCoordinates: 26°33′20″N 81°44′58″W / 26.5556°N 81.7494°W Fatal error: The format of the coordinate could not be determined. Parsing failed. | |
| Collected via grab sample | January 10, 2017 |
| Elevation | 8 m (25 ft) |
Location of sample: The sample was collected near a newly constructed drainage ditch on Paul J Doherty Pkwy, near the intersection of Daniels Pkwy, as part of the Publix construction site. The soil was taken at 26.5556 °N, 81.7494 °W at an approximate depth of 0.1 to 0.5 feet below ground surface. The location will be the future home of a Publix Shopping Center.
Initial sample description: The sample is a well-consolidated silty-sand with trace gravel. The sample was moist, brown in color, and contained some roots.
Specific Gravity
Moisture Content
| Mass (g) | |
|---|---|
| Metal Can | 14.04 |
| Metal Can + Soil (Natural) | 87.69 |
| Metal Can + Soil (Dry) | 82.84 |
| Soil (Natural) | 73.65 |
| Soil (Dry) | 68.8 |
| Moisture Content | 7.05% |
Moisture content can be calculated by placing soil in a metal can and recording the mass of the can and total mass, followed by drying the sample in an oven. Record the dry weight to calculate the mass of water that evaporated and therefore the moisture content using the following equation:.
Specific Gravity - Pycnometer
| Raw | Mass (g) | Volume (cm3) | Calculated | Mass (g) | Volume (cm3) | |
|---|---|---|---|---|---|---|
| Pycnometer | 178.35 | - | Soil (Dry) | 44.95 | 21.09 | |
| Soil (Natural) | 48.36 | - | Water Added | 476.37 | 476.37 | |
| Pycnometer + Water | 675.81 | 497.46 | ||||
| Pycnometer + Soil + Water
(Mtotal) |
703.08 | 497.46 | Specific Gravity | 2.131 |
Specific Gravity is determined with the use of a pycnometer. The specific gravity can be calculated using the data above and the following equations:
The specific gravity of this sample was found to be 2.131. This is slightly below the typical range of 2.65-2.8 for clean soils. This is likely due to the significant quantity of organic material in the sample and was evident by the small pieces of root material floating on top of the water. A soil can have a specific gravity of 1 or lower if it contains a high quantity of organic material. Alternately, a soil can have a specific gravity in excess of 3.5 if containing significant levels of iron. Given the near-surface location of origin and evidence of root material, this value appears to be valid despite being below the typical range.
Grain Size Distribution
Compaction
Visual Classification and Microscopic Analysis
References
External links
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