i think 80 not to sure, im not a civil engineer but i have done some soil work in mechanical enginerring
The range of Poisson's ratio for soils such as silty clay, sandy silt, sandy clay, clayey sand, and silty sand typically falls between 0.2 and 0.5. While silty clays may exhibit values closer to 0.3 to 0.5, sandy soils like sandy clay and sandy silt often have lower values, around 0.2 to 0.4. The specific value can vary depending on the soil's moisture content, density, and compaction. Always refer to empirical data or specific soil testing for precise values in engineering applications.
The pH value may be very variable.
Silty soil is a fine-textured soil that is a mix of sand, silt, and clay particles, with silt being the dominant component. It has moderate water retention and drainage properties and is often fertile and easy to work with.
for sandy soil it is 2.65 for silty sand it is 2.6 up to 2.9
Silty soil can be found all over India. The silty soil is great for drainage and is used for various things such as gardening.
Sand moves fastest through water, where it can be carried along by water currents. It moves slower through sandy soil due to friction, and even slower through silty soil due to smaller pore spaces and more resistance. Overall, the speed of sand movement depends on factors like water flow rate, soil composition, and grain size.
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Silty soil is a well-draining soil type that is made up of fine particles smaller than sand and larger than clay. It is typically fertile and holds moisture well, making it suitable for a variety of plants.
Silty.
ham
Water would move through sand more rapidly than silt, but that does not mean sand would erode more rapidly than silt. In fact, the opposite is true. Erosion occurs when water runs along the surface of the land. If it infiltrates downward into the soil, it does not create runoff.
Silty soil is better than sandy soil for plant growth because it has smaller particles that hold water and nutrients more effectively. This soil type also offers good drainage and aeration while retaining moisture, providing an ideal environment for root growth.