1. Soil structure with the greatest permeability 2. According to the USDA soil c

Question

1. Soil structure with the greatest permeability

2. According to the USDA soil classification, a soil that can form a ball, but cannot be formed into a ribbon is a

3. According to the USDA soil classification, a soil that can be formed into a ribbon between 2.5 cm and 5 cm long that is slightly gritty is

4. According to the USDA soil classification, a soil that can be formed into a ribbon longer than 5 cm that feels smooth is a

5. What is the two-letter category for a lean clay of low plasticity in the UCSC classification?  

6. The structure of a soil that breaks into irregular block of roughly equal dimension is called

7. The consistency of a soil with unconfined compressive strength of 750 psf is

8. A field tool to measure the unconfined compressive strength of a soil:

9. A CH soil in the USCS system can be repeatedly rolled into a cylinder of this diameter (in mm):

100 90 80 70 clay olo 60 St cla sa 40 silty clay loam clay loam 30 sandy clay loamm 20 am silt loam 10 sandy loam XJoam san san Sand (%) Soil textures in USDA classification based on fractions of sand, silt and clay.

Explanation / Answer

1. Sandy loam has highest permeability.

2. The coreect answer is Silt. A silt will form a ball, but when you try to roll it out into a ribbon it will crack

3. SANDY CLAY LOAM Feels gritty and sticky and it Forms ribbon 1– 2 inches (2.5 – 5 cm) long.

4. SILTY CLAY LOAM Feels smooth and Forms ribbon 1– 2.5 inches (2.5 – 6 cm) long.

5. Two letter classification for give type is CL

C for clay and L for low Plasticity

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