Quantity of Water by Kuichling's Formula Calculator

Kuichling's Formula:

\[ Q = 3182 \times \sqrt{P} \]

Water Quantity (L/min):

1. What is Kuichling's Formula?

Definition: Kuichling's formula calculates the quantity of water required to extinguish fires based on population.

Purpose: It helps municipal planners and fire departments estimate water requirements for fire protection.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q = 3182 \times \sqrt{P} \]

Where:

\( Q \) — Quantity of water (liters per minute)
\( P \) — Population in thousands

Explanation: The formula accounts for the fact that fire water demand increases with population but not linearly.

3. Importance of Water Quantity Calculation

Details: Proper water quantity estimation ensures adequate fire protection, proper infrastructure planning, and community safety.

4. Using the Calculator

Tips: Enter the population in thousands (e.g., 20,000 people = 20). The result has a ±5% margin of error.

5. Frequently Asked Questions (FAQ)

Q1: Why does the formula use square root of population?
A: It reflects that fire risk doesn't increase linearly with population due to building density and fire spread patterns.

Q2: What's the ±5% margin for?
A: It accounts for variations in local conditions, building types, and fire risk factors.

Q3: Is this formula still used today?
A: Yes, though often combined with modern methods, it remains a fundamental reference in fire protection engineering.

Q4: What if my population isn't exactly in thousands?
A: You can enter decimal values (e.g., 12.5 for 12,500 people).

Q5: Does this include water for other uses?
A: No, this calculates only fire protection needs. Domestic and industrial water needs require separate calculations.