LEED Green Associate Practice Test

What type of fixtures measure water usage in gallons per flush (gpf)?

1. Flow fixtures

2. Flush fixtures

3. Waterless fixtures

4. Efficient fixtures

The correct answer is: Flush fixtures

The correct choice is flush fixtures, as these are specifically designed to measure water usage related to toilets and urinals in terms of gallons per flush (gpf). Flush fixtures are integral to assessing and managing water consumption in restrooms, as they indicate the efficiency of plumbing systems in terms of how much water is utilized with each flush. This measurement is crucial for sustainability efforts, especially in the context of LEED certification, as reducing gpf can lead to significant water savings in a building. Other types of fixtures, while related, do not measure water usage in gpf. For instance, flow fixtures generally relate to devices that measure the flow rate of water in terms of gallons per minute (gpm), which is more applicable to faucets and showerheads. Waterless fixtures are designed to eliminate water use entirely, such as waterless urinals, and thus do not have a measurement in gallons per flush. Efficient fixtures can refer to any fixtures that save water but do not specifically denote the measurement of gpf. Hence, flush fixtures are the direct answer to the question posed.