1. What is the Infiltration Formula?

The infiltration formula calculates the infiltration rate per unit length of sanitary sewer. It is used to determine how much water enters the soil through the sewer system per meter of pipe length, which is important for hydrological and sanitary engineering assessments.

2. How Does the Calculator Work?

The calculator uses the infiltration formula:

Where:

• \( I \) — Infiltration (m²/s)
• \( F \) — Actual Infiltration (m³/s)
• \( L \) — Length of a Sanitary Sewer (m)

Explanation: The formula divides the total infiltration volume by the length of the sewer to determine the infiltration rate per unit length.

3. Importance of Infiltration Calculation

Details: Calculating infiltration rates is crucial for designing efficient sewer systems, preventing overflows, and managing groundwater contamination risks. It helps engineers determine the appropriate capacity and maintenance requirements for sanitary sewers.

4. Using the Calculator

Tips: Enter actual infiltration in m³/s and length in meters. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What units should be used for input values?
A: Actual infiltration should be in cubic meters per second (m³/s) and length in meters (m) for consistent results.

Q2: Why is infiltration measured per unit length?
A: Measuring infiltration per unit length allows for standardized comparison across different sewer sections and helps in designing uniform systems.

Q3: What factors affect infiltration rates?
A: Soil type, pipe material, joint conditions, groundwater levels, and seasonal variations can all affect infiltration rates in sanitary sewers.

Q4: How often should infiltration measurements be taken?
A: Regular monitoring is recommended, especially after heavy rainfall or ground disturbances, to detect changes in infiltration rates.

Q5: Can this formula be used for stormwater systems?
A: While the basic principle is similar, stormwater systems may require additional considerations due to different flow characteristics and contaminants.