Section 4: Water Efficiency Flashcards
For a building with a certificate of occupancy dated 1995 or later, the baseline of the water use that would result if all fixtures met the code requirements is what?
120%
For a building with a certificate of occupancy dated before 1995, the baseline of the water use that would result if all fixtures met the code requirements is what?
150%
What is the Basic indoor water-use reduction calculation?
Daily water use for each fixture type =
Fixture flush or flow rate x Duration of use x User x Uses per person
When would the gender ratio affects water usage?
When urinals are installed
For a female FTE, how many times per day would they use a water closet in a non-residential facility?
3
For a male FTE, how many times per day would they use a water closet in a non-residential facility (if urinals were also available)?
1
For a male FTE, how many times per day would they use a urinal in a non-residential facility?
2
For water calculations, how many seconds would a public lavatory faucet be turned on per use?
30 seconds
In a residential facility, how many times would a water closet be used per day by FTE?
5
In a residential facility, how long would a shower be used per FTE per?
480 seconds
For the Indoor Water Use Reduction prerequisite, projects in unlisted countries must reduce their water usage below the baseline by at least how much?
20%
What does CEE stand for?
Consortium for Energy Efficiency
What is the intent of the Building-Level Water Metering prerequisite?
To support water management and identify opportunities for additional water savings by tracking water consumption
For the Building-Level Water Metering prerequisite, what kind of water needs to me measured?
Potable water
How many points are available for the Outdoor Water Use Reduction credit?
2
What are the two thresholds for the Outdoor Water Use Reduction credit?
30% reduction from baseline = 1 point
40% reduction from baseline = 2 points
What does LWR stand for?
Landscape water requirement
Elements of a landscape that consist of live, horticultural elements are known as what?
Softscape
How many points are available for the Indoor Water Use Reduction credit?
5 (4 for data centres)
For schools that close at the weekend, and close for 8 weeks vacation, the project assumes how many operational days per year?
195
What is the intent of the Cooling Tower Water Use credit?
To conserve water used for cooling tower makeup while controlling microbes, corrosion, and scale in the condenser water system
How many points are available for the Cooling Tower Water Use credit?
3 (4 for data centres)
Explain how is the cooling tower or evaporative condenser water efficiency calculated?
The number of recirculation cycles before water must be removed by blowdown
In terms of a cooling tower, what is are cycles of concentration?
Cycles of concentration are the number of times that a volume of water can circulate through a cooling tower system before dissolved minerals become so concentrated
What is blowdown?
The removal of makeup water from a cooling tower or evaporative condenser recirculation system to reduce concentrations of dissolved solids
What is makeup water?
Water that is fed into a cooling tower system or evaporative condenser to replace water lost through evaporation, drift, bleed-off, or other causes
What is the intent of the Water Metering credit?
To support water management and identify opportunities for additional water savings by tracking water consumption
How many points are available for the Water Metering credit?
2
For the Water Metering credit, water systems serving what percent of the landscape area need to be metered?
80%
For the Water Metering credit, what percentage of water systems service indoor plumbing fixtures and fittings need to be metered?
80%
What is an external meter?
A device installed on the outside of a water pipe to record the volume of water passing through it
What is another name for an external meter?
Clamp-on meter
