LEED AP Building Design and Construction (BD+C) Practice Exam

What is the default gender ratio used for indoor water use reduction calculations?

1. 1 male to 2 females

2. 1 to 1

3. 2 males to 1 female

4. 3 males to 2 females

The correct answer is: 1 to 1

The default gender ratio used for indoor water use reduction calculations is based on the assumption that the usage patterns of males and females can differ, particularly in restroom facilities. A 1 to 1 ratio is established as a standard for these calculations due to its balance and simplicity, reflecting a general assumption about the occupancy and usage rates in most facilities. This 1 to 1 ratio enables project teams to develop a baseline for calculating water usage and determining the potential savings through water-efficient fixtures and strategies. By employing this straightforward approach, LEED encourages consistent methodology across various projects, allowing for easier comparisons and more accurate assessments of water conservation strategies. Other ratios, while they may be applicable in specific contexts based on project needs, do not serve as the default standard across the board. Adopting the 1 to 1 ratio provides a practical and widely accepted foundational point for the majority of indoor water use calculations.