Total Water Storage Capacity Of Soil Calculator

Total Water Storage Capacity Of Soil Formula:

\[ S = \frac{\Gamma_d \times d \times F}{\Gamma_w} \]

The Dry Unit Weight of Soil (Γd):

kN/m³

Root Zone Depth (d):

The Field Capacity of Water (F):

Unit Weight of Water (Γw):

kN/m³

Total Water Storage Capacity of Soil (S):

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1. What is Total Water Storage Capacity of Soil?

Total water storage capacity of soil is defined as the amount of water available for plant growth in the soil. It represents the maximum amount of water that the soil can retain and make available to plants.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ S = \frac{\Gamma_d \times d \times F}{\Gamma_w} \]

Where:

\( S \) — Total water storage capacity of soil (m)
\( \Gamma_d \) — The Dry unit weight of soil (kN/m³)
\( d \) — Root zone depth (m)
\( F \) — The field capacity of water
\( \Gamma_w \) — Unit weight of water (kN/m³)

Explanation: The formula calculates the water storage capacity by considering the soil's dry unit weight, root zone depth, field capacity, and the unit weight of water.

3. Importance of Water Storage Capacity Calculation

Details: Accurate calculation of water storage capacity is crucial for irrigation planning, water management, and understanding the soil's ability to support plant growth.

4. Using the Calculator

Tips: Enter the dry unit weight of soil in kN/m³, root zone depth in meters, field capacity of water (dimensionless), and unit weight of water in kN/m³. All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: What is field capacity of water?
A: The field capacity of water is the amount of water remaining in a soil after it has been thoroughly saturated and allowed to drain freely, usually for one to two days.

Q2: What is the typical range for dry unit weight of soil?
A: Dry unit weight of soil typically ranges from 11 to 22 kN/m³, depending on soil type and compaction.

Q3: How does root zone depth affect water storage capacity?
A: Deeper root zones allow for greater water storage capacity as plants can access water from a larger volume of soil.

Q4: What factors influence field capacity?
A: Field capacity is influenced by soil texture, structure, organic matter content, and compaction.

Q5: Why is unit weight of water important in this calculation?
A: Unit weight of water provides the conversion factor to relate the mass of water to its volume in the soil storage calculation.