Length When Maximum Height of Water Table Is Considered Calculator

Formula Used:

\[ L = 2 \times h_m / \sqrt{R / K} \]

Maximum Height of Water Table (h_m):

Natural Recharge (R):

m³/s

Coefficient of Permeability (K):

m/s

Length between Tile Drain (L):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Length When Maximum Height of Water Table Is Considered?

The Length between Tile Drain refers to the approximate expression to the water table profile on a horizontal impervious boundary. It is an important parameter in drainage engineering and groundwater management.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ L = 2 \times h_m / \sqrt{R / K} \]

Where:

\( L \) — Length between Tile Drain (m)
\( h_m \) — Maximum Height of Water Table (m)
\( R \) — Natural Recharge (m³/s)
\( K \) — Coefficient of Permeability (m/s)

Explanation: This formula calculates the spacing between tile drains based on the maximum height of the water table, natural recharge rate, and soil permeability coefficient.

3. Importance of Length Calculation

Details: Accurate calculation of drain spacing is crucial for effective drainage system design, preventing waterlogging, and maintaining optimal soil moisture conditions for agriculture and construction.

4. Using the Calculator

Tips: Enter maximum height of water table in meters, natural recharge in m³/s, and coefficient of permeability in m/s. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of tile drain spacing?
A: Proper tile drain spacing ensures efficient water removal from agricultural fields and construction sites, preventing waterlogging and soil saturation.

Q2: How does soil permeability affect drain spacing?
A: Higher permeability soils allow water to move more easily, requiring wider drain spacing, while low permeability soils need closer drain spacing.

Q3: What factors influence natural recharge rates?
A: Precipitation patterns, soil type, vegetation cover, and land use practices all affect natural recharge rates to groundwater.

Q4: Are there limitations to this formula?
A: This formula provides an approximate solution and may need adjustment for complex geological conditions or irregular drainage patterns.

Q5: How often should drain spacing be recalculated?
A: Drain spacing should be reviewed when there are significant changes in land use, climate patterns, or observed drainage performance.