Constant Depending upon Soil at Base of Well with Base 10 Calculator

Formula Used:

\[ K = \frac{A_{cs} \times 2.303}{t} \times \log_{10}\left(\frac{h_1}{h_2}\right) \]

Cross-Sectional Area (A_cs):

m²

Time (t):

Depression Head 1 (h₁):

Depression Head 2 (h₂):

Constant (K):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Constant Depending upon Soil at Base of Well?

The constant depending upon soil at base of well is a parameter used in hydrogeology to characterize the permeability and other properties of soil at the base of a well. It is calculated using specific measurements taken during well testing.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ K = \frac{A_{cs} \times 2.303}{t} \times \log_{10}\left(\frac{h_1}{h_2}\right) \]

Where:

\( K \) — Constant depending on the soil at the base of the well
\( A_{cs} \) — Cross-sectional area (m²)
\( t \) — Time (hr)
\( h_1 \) — Depression Head 1 (m)
\( h_2 \) — Depression Head 2 (m)

Explanation: The formula calculates the soil constant using cross-sectional area, time, and the logarithmic ratio of two depression head measurements.

3. Importance of Constant Calculation

Details: Accurate calculation of this constant is crucial for determining soil permeability, designing effective drainage systems, and assessing groundwater flow characteristics in hydrogeological studies.

4. Using the Calculator

Tips: Enter cross-sectional area in m², time in hours, and both depression heads in meters. All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What does this constant represent in practical terms?
A: This constant represents the soil's ability to transmit water at the base of the well, which is important for understanding groundwater movement and well performance.

Q2: Why use logarithmic function in this calculation?
A: The logarithmic function helps linearize the relationship between head differences and time, making the constant calculation more accurate and consistent.

Q3: What are typical values for this constant?
A: Values vary significantly depending on soil type, ranging from very low values for clay soils to higher values for sandy or gravelly soils.

Q4: How does cross-sectional area affect the constant?
A: Larger cross-sectional areas generally result in higher constant values, indicating better water transmission capacity.

Q5: What are the limitations of this calculation method?
A: This method assumes homogeneous soil conditions and may not accurately represent complex or layered soil profiles.