1. What is Unit Weight of Water?

Unit Weight of Water (γ_water) represents the weight of water per unit volume, typically measured in kN/m³. It is a fundamental property used in various engineering calculations, particularly in fluid mechanics and hydraulics.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \gamma_{water} \) — Unit Weight of Water (kN/m³)
• \( P_{wt} \) — Water Pressure (kN/m²)
• \( H_{liquid} \) — Head of Liquid in Pipe (m)

Explanation: This formula calculates the unit weight by dividing the water pressure by the head of liquid, providing the weight per unit volume of water.

3. Importance of Unit Weight Calculation

Details: Accurate calculation of unit weight is essential for designing hydraulic structures, analyzing fluid behavior, and ensuring proper functioning of water distribution systems.

4. Using the Calculator

Tips: Enter water pressure in kN/m² and head of liquid in meters. Both values must be positive and non-zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical unit weight of water?
A: The unit weight of water is approximately 9.81 kN/m³ at standard conditions (4°C and atmospheric pressure).

Q2: How does temperature affect unit weight?
A: Temperature changes can slightly alter the density and thus the unit weight of water, with maximum density occurring at 4°C.

Q3: Can this formula be used for other liquids?
A: While the formula is general, the unit weight value will differ for other liquids based on their specific density.

Q4: What are common applications of unit weight calculation?
A: Applications include dam design, pipeline analysis, groundwater studies, and various civil engineering projects involving fluid mechanics.

Q5: How accurate is this calculation method?
A: The calculation provides theoretical values based on input parameters. For precise engineering applications, consider temperature and pressure variations.