Water is one of the most essential resources for human survival, and having a proper storage system is crucial to ensure a constant supply. Rectangular water tanks are a popular choice for both domestic and commercial use due to their efficient use of space and ease of installation. However, determining the right size and capacity of a rectangular water tank can be a daunting task for many. In this article, we will explore all the important aspects to consider when calculating the size and capacity of a rectangular water tank in litres, providing a comprehensive guide for individuals and businesses to make an informed decision.

## How to calculate rectangular water tank size and capacity in litre

A rectangular water tank is a commonly used type of tank for storing water in residential, commercial, and industrial buildings. As a civil engineer, it is essential to know how to calculate the size and capacity of a rectangular water tank to ensure its proper design and functionality.

Step 1: Determine the Required Water Storage Capacity

The first step in calculating the size of a rectangular water tank is to determine the required water storage capacity. This will depend on the intended use of the tank, such as residential or commercial use, and the estimated water demand.

For residential use, the water demand can be estimated by multiplying the number of people in the household by their average daily water usage, which is typically 80-100 gallons per person. For commercial or industrial use, the water demand can be estimated based on the type of building and its daily water consumption.

Step 2: Calculate the Tank Dimensions

Once the required water storage capacity is determined, the dimensions of the tank can be calculated. The dimensions will vary depending on the shape of the tank, with a rectangular tank having length, width, and height as its three dimensions.

To calculate the length and width of the tank, divide the total water storage capacity by the desired height, making sure to convert the units to feet. For example, if the required water storage capacity is 10,000 liters, and the desired height is 10 feet, the length and width of the tank would be 9.84 feet each (10,000 liters / 10 feet = 984 liters/ft).

Step 3: Determine the Tank Height

The height of the tank can be determined by dividing the water storage capacity by the product of the length and width of the tank. In the previous example, if the length and width are 9.84 feet each, the required height of the tank would be 10 feet (10,000 liters / (9.84 feet x 9.84 feet) = 1.02 feet/ft).

Step 4: Convert to Capacity in Litres

Once the dimensions of the tank have been calculated, they can be converted to capacity in liters. To do this, multiply the length, width, and height of the tank in feet and then multiply the result by 28.32. This will give you the capacity of the tank in liters. For example, using the dimensions from the previous steps, the tank’s capacity in liters would be 2638.49 liters (9.84 feet x 9.84 feet x 1.02 feet x 28.32).

In conclusion, calculating the size of a rectangular water tank is crucial for ensuring its proper design and functionality. By following these simple steps, a civil engineer can determine the required water storage capacity and the tank’s dimensions. It is essential to note that these calculations are based on ideal conditions and may vary depending on the design requirements and site conditions.

## Conclusion

In conclusion, understanding how to calculate the rectangular water tank size and capacity in litres is crucial for determining the appropriate amount of water to store for different purposes. With the knowledge of the tank’s dimensions and conversion factors, one can easily calculate the volume and capacity of a rectangular water tank in litres. This ensures efficient use of water resources and helps in planning for storage needs. It is important to regularly check and maintain the tank to ensure optimal performance and avoid any wastage of water. By following these simple steps, one can confidently determine the tank size and capacity needed for their specific water storage requirements.

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