Which of the following cannot be classified as graywater?
Correct Answer: A
Explanation This option requires the project to classify water from toilets as blackwater, not graywater, because it contains human waste and pathogens that pose a health risk1. Graywater is defined as wastewater that contains fewer contaminants than blackwater, such as water from showers, sinks, and washing machines2. Graywater can be reused for non-potable purposes, such as irrigation and toilet flushing, after appropriate treatment3. References: = LEED v4: Building Design + Construction Guide, Greywater Systems, Recycled content.
LEED-AP-BD-C Exam Question 12
In the energy modeling of a building envelope, which of the following U-values should be considered as an assembly U-value?
Correct Answer: A
Explanation The assembly U-value of a building envelope component is the overall rate of heat transfer through that component, taking into account the different materials and layers that make up the component. For example, the assembly U-value of a wall would include the effects of the insulation, framing, sheathing, cladding, air films, etc. The assembly U-value is different from the material U-value, which is the rate of heat transfer through a single material. For example, the material U-value of steel is much higher than the material U-value of glass, but the assembly U-value of a steel-framed window may be lower than the assembly U-value of a glass curtain wall, depending on the other factors involved. References: = [LEED v4: Building Design + Construction Guide], Minimum Energy Performance Calculator - ASHRAE 90.1 - 2010, A Quick and Easy Guide to U-Values - First In Architecture.
LEED-AP-BD-C Exam Question 13
A project's total site area is 240,000 ft2 (22 297 m2) and the building footprint is 40,000 ft2 (3 716 m2). How much outdoor space and vegetated space must it provide to earn Sustainable Sites Credit, Open Space?
Correct Answer: C
Explanation According to the LEED v4 Reference Guide for Building Design and Construction, the project must provide outdoor space that is at least 30% of the total site area (including the building footprint), of which at least 25% must be vegetated. In this case, the project must provide 0.3 x 240,000 ft2 = 72,000 ft2 (6 689 m2) of outdoor space, of which 0.25 x 72,000 ft2 = 18,000 ft2 (1 672 m2) must be vegetated. Therefore, option C is the correct answer.References: LEED v4 Reference Guide for Building Design and Construction, p.5411
LEED-AP-BD-C Exam Question 14
What is the average flush rate for a dual flush toilet with a high flush rate of 1.6 gpf (6 lpf) and a low flush rate of 1.05 gpf (4 lpf)?
Correct Answer: A
LEED-AP-BD-C Exam Question 15
Which of the following is required when documenting a LEED Pilot credit?
Correct Answer: D
Explanation Pilot Credit registration is required when documenting a LEED Pilot credit. This is to ensure that the project team has access to the latest pilot credit language and requirements, and that USGBC can track the usage and feedback of the pilot credits. The other options are not required for documenting a pilot credit, although they may be helpful or applicable for other credits.References: LEED Pilot Credit Library, Getting Started, page 1.
