1. Water content (w): It is defined as the ratio of weight of water to weight of solids.

Limit: w ≥ 0

It is expressed as percentage.

For dry soil, w = 0. For saturated soil, w > 0.

The water content of some of fine-grained soil may be even greater than 100%.

Volume-weight Relationships

1. Bulk unit weight : It is defined as the total weight per unit total volume. It is also known as wet unit weight or total unit weight.

2. Dry unit weight : It is defined as the weight of solids per unit total volume.

3. Saturated unit weight : It is the bulk weight when the soil is fully saturated.

4. Submerged unit weight : It is defined as submerged weight per unit of total volume.

5. Unit weight of soil solids : It is defined as the ratio of weight of solids to the volume of solids.

Limit: w ≥ 0

It is expressed as percentage.

For dry soil, w = 0. For saturated soil, w > 0.

The water content of some of fine-grained soil may be even greater than 100%.

Volume-weight Relationships

1. Bulk unit weight : It is defined as the total weight per unit total volume. It is also known as wet unit weight or total unit weight.

2. Dry unit weight : It is defined as the weight of solids per unit total volume.

3. Saturated unit weight : It is the bulk weight when the soil is fully saturated.

4. Submerged unit weight : It is defined as submerged weight per unit of total volume.

5. Unit weight of soil solids : It is defined as the ratio of weight of solids to the volume of solids.

Volume-weight Relationships
Reviewed by Parag Pal
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