Who of the following may submit to Green Business Certification Inc. a LEED for Homes project for certification?
Answer(s): D
The LEED for Homes Rating System (v4) outlines the certification process, including who is authorized to submit a project to the Green Business Certification Inc. (GBCI) for LEED certification. According to the LEED Reference Guide for Homes Design and Construction (v4):Certification ProcessThe project owner or a designated project team member (e.g., the project manager or LEED AP) is responsible for submitting the LEED for Homes project to GBCI for certification, coordinating with the LEED Green Rater for documentation and verification.Source: LEED Reference Guide for Homes Design and Construction, v4, Introduction, p. 28. The LEED v4.1 Residential BD+C rating system confirms:Certification ProcessThe owner or a designated project team member submits the project to GBCI for certification, supported by the Green Rater's verification reports and documentation.Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online. The correct answer is the Owner or designated project team member (Option D), as they are authorized to submit the project to GBCI.Why not the other options?A . The Green Rater: The Green Rater conducts field inspections and prepares verification reports but does not submit the project.B . The Energy Rater: The Energy Rater focuses on energy performance (e.g., HERS Index) and does not handle submission.C . The Quality Assurance Designee: The QAD reviews documentation for quality control, not submission.
LEED Reference Guide for Homes Design and Construction, v4, Introduction, p. 28. The LEED AP Homes Candidate Handbook emphasizes the certification process, including submission roles, and references the LEED Reference Guide for Homes Design and Construction as a key resource. The exam is based on LEED v4, ensuring the relevance of owner submission.LEED Reference Guide for Homes Design and Construction, v4, USGBC, Introduction, p. 28. LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4). LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming submission roles.
50% of a new LEED home exterior is clad with salvaged brick; the remaining 50% is clad with wood. In order to earn a point under Materials and Resources Credit, Environmentally Preferable Products, which of the following must be true?
Answer(s): C
The LEED for Homes Rating System (v4) awards points for the Materials and Resources (MR) Credit:Environmentally Preferable Products when materials meet sustainable criteria, such as being reclaimed, recycled, or FSC-certified. The scenario specifies that 50% of the exterior is clad with salvaged (reclaimed) brick, and the remaining 50% is wood. According to the LEED Reference Guide for Homes Design and Construction (v4):MR Credit: Environmentally Preferable Products (14 points) Use products that meet one or more of the following criteria for at least 25% (1 point), 50% (2 points), or 90% (34 points) by cost of the total materials:Reused or salvaged materials: Materials reclaimed from the same or another project, such as salvaged brick.FSC-certified wood: Wood products certified by the Forest Stewardship Council. To earn 1 point, at least 25% of the total material cost must meet one or more criteria, with products like salvaged brick qualifying as reclaimed.Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 160161. The LEED v4.1 Residential BD+C rating system confirms:MR Credit: Environmentally Preferable ProductsReclaimed materials, such as salvaged brick, contribute to the percentage of environmentally preferable products based on their cost. A minimum of 25% by cost is required for 1 point. Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online. In this scenario, 50% of the exterior cladding is salvaged brick, which qualifies as reclaimed material.Since at least half of the siding is reclaimed (Option C), this meets the 25% threshold for 1 point, assuming the material cost proportion aligns. The wood portion does not need to be FSC-certified or reclaimed unless additional points are targeted.Why not the other options?A . All of the siding is FSC-certified: Only 50% of the siding is wood, and FSC certification is not required for salvaged brick. The 25% threshold can be met with reclaimed brick alone.
LEED Reference Guide for Homes Design and Construction, v4, MR Credit:Environmentally Preferable Products, p. 160.B . Cladding combinations cannot earn points: This is incorrect; combinations of reclaimed, FSC- certified, or other qualifying materials can earn points based on total material cost. LEED Reference Guide for Homes Design and Construction, v4, MR Credit:Environmentally Preferable Products, p. 161.D . At least half of the wood siding is both reclaimed and local: The wood does not need to be reclaimed or local; the salvaged brick (50% of siding) already qualifies for the credit. Local production is a separate option (Option 1). LEED Reference Guide for Homes Design and Construction, v4, MR Credit:Environmentally Preferable Products, p. 160.The LEED AP Homes Candidate Handbook emphasizes MR credits, including Environmentally Preferable Products, and references the LEED Reference Guide for Homes Design and Construction as a key resource. The exam is based on LEED v4, ensuring the relevance of reclaimed materials.LEED Reference Guide for Homes Design and Construction, v4, USGBC, Materials and Resources Credit: Environmentally Preferable Products, p. 160161. LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4). LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming reclaimed material criteria.
The minimum required outdoor air ventilation is calculated based on the conditioned floor area of the home and the:
Answer(s): B
The LEED for Homes Rating System (v4) addresses minimum outdoor air ventilation in the Indoor Environmental Quality (EQ) Prerequisite: Ventilation, using ASHRAE Standard 62.2-2010 to determine ventilation rates based on conditioned floor area and the number of bedrooms. According to the LEED Reference Guide for Homes Design and Construction (v4):EQ Prerequisite: VentilationMeet the minimum outdoor air ventilation requirements of ASHRAE Standard 62.2-2010, which calculates ventilation rates based on the conditioned floor area of the home and the number of bedrooms (as a proxy for occupancy). The formula is: Ventilation rate (cfm) = 0.01 × floor area (ft²) + 7.5 × (number of bedrooms + 1).Source: LEED Reference Guide for Homes Design and Construction, v4, Indoor Environmental Quality Prerequisite: Ventilation, p. 142.The LEED v4.1 Residential BD+C rating system confirms:EQ Prerequisite: VentilationVentilation rates are determined using ASHRAE 62.2-2010, based on conditioned floor area and the number of bedrooms, which accounts for typical occupancy levels. Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online. The correct answer is number of bedrooms (Option B), as ASHRAE 62.2-2010 uses this alongside conditioned floor area to calculate ventilation requirements.Why not the other options?A . Volume of the home: Ventilation rates are based on floor area, not volume, as floor area better correlates with occupancy and pollutant loads.
LEED Reference Guide for Homes Design and Construction, v4, EQ Prerequisite:Ventilation, p. 142.C . Number of bathrooms: Bathrooms influence local exhaust requirements, not whole-house ventilation rates. LEED Reference Guide for Homes Design and Construction, v4, EQ Credit: Enhanced Ventilation, p. 146.D . Number of full-time occupants: While occupancy affects ventilation needs, ASHRAE 62.2-2010 uses bedrooms as a proxy, not actual occupant counts. LEED Reference Guide for Homes Design and Construction, v4, EQ Prerequisite:Ventilation, p. 142.The LEED AP Homes Candidate Handbook emphasizes EQ prerequisites, including ventilation calculations, and references the LEED Reference Guide for Homes Design and Construction as a key resource. The exam is based on LEED v4, ensuring the relevance of ASHRAE 62.2-2010.LEED Reference Guide for Homes Design and Construction, v4, USGBC, Indoor Environmental Quality Prerequisite: Ventilation, p. 142.LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4). LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming ventilation calculation criteria.
In addition to testing envelope leakage for energy impacts, a blower door test can be used in attached housing projects to evaluate:
The LEED for Homes Rating System (v4) requires blower door testing in the Energy and Atmosphere (EA) Credit: Air Infiltration to measure envelope leakage, but it also has applications in Indoor Environmental Quality (EQ) credits for attached housing (e.g., multifamily or semi-detached homes) to assess air transfer between units.According to the LEED Reference Guide for Homes Design and Construction (v4):EQ Credit: Compartmentalization (1 point, multifamily) In attached housing projects, use a blower door test to evaluate the potential for environmental tobacco smoke and odor contamination between units by measuring air leakage through common walls and ensuring effective sealing. This ensures indoor air quality by preventing unwanted air transfer.Source: LEED Reference Guide for Homes Design and Construction, v4, Indoor Environmental Quality Credit: Compartmentalization, p. 152.The LEED v4.1 Residential BD+C rating system confirms:EQ Credit: CompartmentalizationBlower door testing in attached housing verifies the airtightness of shared walls, reducing the potential for environmental tobacco smoke, odors, or other contaminants to transfer between units. Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online. The correct answer is potential for environmental tobacco smoke and odor contamination (Option D), as blower door tests in attached housing assess air leakage through common walls, which can carry smoke or odors.Why not the other options?A . Flow rate of local exhaust and supply fans or hoods: Blower door tests measure envelope leakage, not fan flow rates, which are tested separately (e.g., using a flow hood).
LEED Reference Guide for Homes Design and Construction, v4, EQ Credit: Enhanced Ventilation, p. 146.B . Quantity of moisture transfer through common wall systems: While air leakage can carry moisture, blower door tests focus on air, not moisture quantification. LEED Reference Guide for Homes Design and Construction, v4, EQ Credit:Compartmentalization, p. 152.C . Effectiveness of non-toxic strategies designed to control pests: Pest control strategies are addressed in EQ Credit: Contaminant Control, not evaluated via blower door tests. LEED Reference Guide for Homes Design and Construction, v4, EQ Credit: Contaminant Control, p. 148.The LEED AP Homes Candidate Handbook emphasizes EQ credits, including compartmentalization, and references the LEED Reference Guide for Homes Design and Construction as a key resource. The exam is based on LEED v4, ensuring the relevance of blower door testing for smoke and odor control.LEED Reference Guide for Homes Design and Construction, v4, USGBC, Indoor Environmental QualityCredit: Compartmentalization, p. 152.LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4). LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming compartmentalization testing.
A builder plans to build two semi-detached residential homes at a rural lot he just bought, where the municipal water system cannot reach. The homes will use well water dug on site. The builder would like to build the two units as LEED certified homes. To meet the prerequisite of Water Efficiency domain in LEED Homes, what should the builder do?
Answer(s): A
The LEED for Homes Rating System (v4) includes the Water Efficiency (WE) Prerequisite: Total Water Use, which requires metering to monitor water consumption in LEED-certified homes, even those using well water.According to the LEED Reference Guide for Homes Design and Construction (v4):WE Prerequisite: Total Water UseInstall water meters to measure total potable water use for the entire home, including indoor and outdoor uses. For multifamily or attached housing (e.g., semi-detached homes), each dwelling unit must have its own water meter to track individual usage accurately. Source: LEED Reference Guide for Homes Design and Construction, v4, Water Efficiency Prerequisite:Total Water Use, p. 94.The LEED v4.1 Residential BD+C rating system confirms:WE Prerequisite: Total Water UseIn attached housing projects, such as semi-detached homes, each unit must have a separate water meter to monitor potable water use, regardless of whether the water source is municipal or well water.Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online. For two semi-detached homes using well water, the builder must install two water meters for each unit separately (Option A) to comply with the prerequisite, ensuring individual monitoring of water use for each dwelling unit.Why not the other options?B . Use one water meter for the entire building of two units: A single meter for both units does not meet the requirement for individual metering in attached housing.
LEED Reference Guide for Homes Design and Construction, v4, WE Prerequisite: Total Water Use, p. 94.C . These two semi-detached homes will be exempt from the prerequisite of Water Efficiency: There is no exemption for well water; all LEED homes must meet the metering prerequisite. LEED Reference Guide for Homes Design and Construction, v4, WE Prerequisite: Total Water Use, p. 94.D . At least one water meter will be shared by two units, and another separate meter will be used for monitoring landscaping water usage: Individual unit metering is required, and while a separate landscaping meter is encouraged (e.g., for WE Credit: Outdoor Water Use), it is not a prerequisite requirement. LEED Reference Guide for Homes Design and Construction, v4, WE Credit: Outdoor Water Use, p. 98.The LEED AP Homes Candidate Handbook emphasizes WE prerequisites, including water metering, and references the LEED Reference Guide for Homes Design and Construction as a key resource. The exam is based on LEED v4, ensuring the relevance of individual metering for attached homes.LEED Reference Guide for Homes Design and Construction, v4, USGBC, Water Efficiency Prerequisite:Total Water Use, p. 94.LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4). LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming metering requirements.
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