**Question:**Identify the type of soil that contains a wide variety of particle sizes ranging from clay to gravel.**Options:**- a. Marine Soils- b. Boston Blue Clay- c. Bedrock- d. Glacial Till**No graphs or diagrams are present in the image.** The image describes a Standard Penetration Test (SPT) conducted in a sandy soil layer with a unit weight of 115 pcf, performed at a depth of 16 feet below ground surface. The SPT blow counts are recorded as x-y-z, where x, y, and z are the last three digits of the student ID. The test used a safety hammer in a 6-inch diameter exploratory boring with a standard sampler equipped with a liner.The task is to compute the energy-corrected N₆₀, (N₁)₆₀ with overburden correction, angle of friction - φ’, and relative density - Dₑ of the soil, assuming D₅₀ is 0.2 mm.A table is provided with correction factors for different variables:| Factor | Equipment Variable | Term | Correction ||--------------------|------------------------------|---------------|----------------------------------|| **Energy Ratio** | Donut Hammer | Cᵉ = ER/60 | 0.5 to 1.0¹ || | Safety Hammer | | 0.7 to 1.2¹ || | Automatic Hammer | | 0.8 to 1.5¹ || **Borehole Diameter** | 65 to 115 mm | Cʙ | 1.0 || | 150 mm | | 1.05 || | 200 mm | | 1.15 || **Sampling Method**| Standard sampler | Cₛ | 1.0 || | Non-standard sampler | | 1.1 to 1.3 || **Rod Length** | 3 to 4 m | Cʀ | 0.75 || | 4 to 6 m | | 0.85 || | 6 to 10 m | | 0.95 || | 10 to >30 m | | 1.0 |Note: ¹ Values presented are for guidance only. Actual ER values should be measured per ASTM D 4633.This educational resource provides detailed explanations for computing corrections based on equipment and procedure variables during the SPT test, allowing students to understand

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Identify the type of soil that contains wide variety of particle sizes ranging from clay to gravel Marine Soils a. Boston Blue Clay Bedrock Glacial Till

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter2: Soil Deposits-origin, Grain-size, And Shape

Section: Chapter Questions

Problem 2.14P

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Question

The image describes a Standard Penetration Test (SPT) conducted in a sandy soil layer with a unit weight of 115 pcf, performed at a depth of 16 feet below ground surface. The SPT blow counts are recorded as x-y-z, where x, y, and z are the last three digits of the student ID. The test used a safety hammer in a 6-inch diameter exploratory boring with a standard sampler equipped with a liner.

The task is to compute the energy-corrected N₆₀, (N₁)₆₀ with overburden correction, angle of friction - φ’, and relative density - Dₑ of the soil, assuming D₅₀ is 0.2 mm.

A table is provided with correction factors for different variables:

| Factor | Equipment Variable | Term | Correction |
|--------------------|------------------------------|---------------|----------------------------------|
| **Energy Ratio** | Donut Hammer | Cᵉ = ER/60 | 0.5 to 1.0¹ |
| | Safety Hammer | | 0.7 to 1.2¹ |
| | Automatic Hammer | | 0.8 to 1.5¹ |
| **Borehole Diameter** | 65 to 115 mm | Cʙ | 1.0 |
| | 150 mm | | 1.05 |
| | 200 mm | | 1.15 |
| **Sampling Method**| Standard sampler | Cₛ | 1.0 |
| | Non-standard sampler | | 1.1 to 1.3 |
| **Rod Length** | 3 to 4 m | Cʀ | 0.75 |
| | 4 to 6 m | | 0.85 |
| | 6 to 10 m | | 0.95 |
| | 10 to >30 m | | 1.0 |

Note:
¹ Values presented are for guidance only. Actual ER values should be measured per ASTM D 4633.

This educational resource provides detailed explanations for computing corrections based on equipment and procedure variables during the SPT test, allowing students to understand

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