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Floor Space Ratio Formula:
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Floor Space Ratio (FSR), also known as Floor Area Ratio (FAR), is a key planning control used in urban planning and zoning regulations. It represents the relationship between the total floor area of a building and the size of the land on which it is built.
The calculator uses the FSR formula:
Where:
Explanation: The FSR indicates how intensively a site is being developed. A higher FSR means more building area relative to the land size.
Details: FSR is crucial for urban planning as it helps control building density, manage urban growth, ensure adequate light and ventilation, and maintain the character of neighborhoods. Municipalities set maximum FSR limits for different zones to guide development.
Tips: Enter the total floor area and site area in square meters. Both values must be positive numbers. The calculator will compute the FSR as a decimal value.
Q1: What is a typical FSR value for residential areas?
A: Typical FSR values vary by location and zoning regulations. In suburban areas, FSR might be 0.3-0.5, while in high-density urban areas it can exceed 5.0 or more.
Q2: Does FSR include basements and parking areas?
A: This depends on local regulations. Some municipalities exclude basement areas or parking garages from FSR calculations, while others include them.
Q3: How does FSR differ from building coverage?
A: Building coverage refers to the percentage of land covered by the building footprint, while FSR considers the total floor area across all levels.
Q4: Can FSR be greater than 1?
A: Yes, FSR can be greater than 1 when the total floor area exceeds the site area, which is common in multi-story buildings.
Q5: Why do cities regulate FSR?
A: Cities regulate FSR to control density, manage infrastructure demands, preserve neighborhood character, ensure adequate sunlight and ventilation, and maintain overall urban quality of life.