LEED-AP-Homes Exam Dumps : LEED AP Homes (Residential) Exam

TheLEED for Homes Rating System (v4)addresses shower compartments in theWater Efficiency (WE) Credit: Indoor Water Use, where the size and number of showerheads impact water use calculations.

According to theLEED Reference Guide for Homes Design and Construction (v4):

WE Credit: Indoor Water Use (1–6 points)

A shower compartment is defined as an enclosed area with a floor area of no more than 2,500 in² (1.6 m²), where all fixtures (e.g., multiple showerheads) count as a single fixture for water use calculations. Compartments larger than 2,500 in² are considered multiple compartments, and multiple showerheads in such cases are not allowed for LEED compliance to ensure water efficiency.

Source: LEED Reference Guide for Homes Design and Construction, v4, Water Efficiency Credit: Indoor Water Use, p. 96.

TheLEED v4.1 Residential BD+Crating system confirms:

WE Credit: Indoor Water Use

For shower compartments exceeding 2,500 in² (1.6 m²), multiple showerheads are not permitted to maintain water efficiency goals. Each compartment must be treated separately if applicable, but large compartments cannot have multiple heads.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The shower compartment is 3,750 in² (2.4 m²), exceeding the 2,500 in² limit. Therefore,multiple showerheads are not allowed(Option C), as LEED restricts multiple heads in oversized compartments to ensure water efficiency.

Why not the other options?

TheLEED for Homes Rating System (v4)incorporates aHome Size Adjustmentthat adjusts the point threshold for certification based on the home’s conditioned floor area and number of bedrooms, recognizing that smaller homes inherently use fewer resources and energy.

According to theLEED Reference Guide for Homes Design and Construction (v4):

Home Size Adjustment

Smaller homes require fewer points to achieve certification due to their lower energy and resource use, particularly in theEnergy and Atmosphere (EA)category. The adjustment rewards smaller homes for their reduced energy consumption, as reflected in credits likeEA Credit: Annual Energy Use, where smaller homes typically achieve lower HERS Index scores due to lower energy demand.

Source: LEED Reference Guide for Homes Design and Construction, v4, Introduction, p. 24; Energy and Atmosphere Credit: Annual Energy Use, p. 116.

TheLEED v4.1 Residential BD+Crating system confirms:

Home Size Adjustment

Smaller homes benefit from a lower point threshold for certification, reflecting their inherently lower energy use, which aligns withEA Credit: Annual Energy Useby requiring less energy to achieve efficiency targets.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via LEED Online.

The correct answer issmaller homes are awarded credit in the Energy and Atmosphere category because they use less energy(Option D), as smaller homes have lower energy demands, making it easier to achieve energy efficiency credits.

Why not the other options?

TheLEED for Homes Rating System (v4)awards points for theMaterials and Resources (MR) Credit: Environmentally Preferable Productswhen materials, including insulation, meet sustainable criteria such as being reclaimed or salvaged. The credit calculates compliance based on the percentage of total material cost.

According to theLEED Reference Guide for Homes Design and Construction (v4):

MR Credit: Environmentally Preferable Products (1–4 points)

Use products that meet one or more of the following criteria for at least 25% (1 point), 50% (2 points), or 90% (3–4 points) by cost of the total materials:

Reused or salvaged materials, such as reclaimed insulation.For specific material categories like insulation, at least 90% of the insulation (by cost) must be reclaimed, salvaged, or meet other environmentally preferable criteria to contribute significantly to the credit.Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 160–161.

TheLEED v4.1 Residential BD+Crating system confirms:

MR Credit: Environmentally Preferable Products

To earn points, insulation must meet environmentally preferable criteria (e.g., 90% reclaimed or salvaged by cost) to contribute to the overall material cost percentage (25%, 50%, or 90%).

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

For insulation to contribute to earning a point under this credit, aminimum of 90%(by cost) must be reclaimed or salvaged (Option C), aligning with the credit’s threshold for significant material contributions.

Why not the other options?