USGBC LEED-Green-Associate - LEED Green Associate GAFRE Exam (LEED GA)

The Forest Stewardship Council (FSC) is an independent, non-governmental organization that promotes responsible management of the world’s forests. FSC sets standards for forest management that ensure environmental, social, and economic benefits for present and future generations. FSC also certifies forest products that meet its standards through a chain of custody system that tracks the origin and processing of the products. A wood product that is certified by FSC is guaranteed to be harvested from a well-managed source that protects biodiversity, respects indigenous rights, maintains forest productivity, and supports local communities1 . References: LEED v4 Green Associate Candidate Handbook1, FSC’s What We Do

Optimizing daylighting and ventilation is the best answer because it can create synergies across multiple LEED topics. Daylighting can reduce lighting energy demand, improve occupant comfort, and support quality indoor environments. Ventilation supports indoor air quality and occupant health. When considered early through an integrative process, these strategies can influence building orientation, glazing, shading, HVAC design, lighting controls, and energy performance. Local materials mainly support Materials and Resources and may not affect several categories. An energy model is valuable, but it primarily evaluates energy performance; it does not directly deliver broad sustainability outcomes by itself. Delaying sustainability decisions is incorrect because LEED success is strongest when goals, synergies, and trade-offs are evaluated early in design. Early integrated decisions help avoid costly redesign and missed credit opportunities.

Increasing density means building more units or floor area on a given site, which reduces the amount of land and resources needed per unit or occupant1. This also creates a smaller footprint and maximizes the floor area ratio (FAR), which is the ratio of the total building floor area to the site area2. Increasing density can help achieve creditsin the Location and Transportation category, such as Surrounding Density and Diverse Uses3.

LEED v4: Neighborhood Development Guide | U.S. Green Building Council1

Floor Area Ratio - Planning Department2

LEED v4: Building Design + Construction Guide - U.S. Green Building Council3

Graywater refers to wastewater that is not heavily soiled, typically from bathroom sinks, showers, tubs, and washing machines. It does not include water from toilets (which is considered blackwater) or kitchen sinks (which can contain food waste). Graywater can be treated and reused for purposes like landscape irrigation, which can save water and earn LEED points. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

Reused materials are materials that have been used before and are incorporated into a new building without significant alteration1. They are different from recycled materials, which are materials that have been reprocessed into new products or materials2. Reused materials reduce the demand for new resources and the amount of waste sent to landfills1. LEED v4 encourages the use of reused materials by awarding points for Building Product Disclosure and Optimization - Sourcing of Raw Materials3.

Construction Waste Management | WBDG - Whole Building Design Guide1

Why plastic waste is an ideal building material - BBC Future2

LEED v4 | HPAC Engineering3

The reclaimed wood doors can be used to meet the Materials Reuse credit under the Building Product Disclosure and Optimization category in LEED v4. This credit rewards projects for reusing materials that have been recovered from existing buildings or products, and reduces the demand for virgin materials and the associated environmental impacts. The credit does not have any distance requirements for the source of the reused materials, unlike the Recycled Content and Regional Materials credits.

LEED v4: Building Design + Construction Guide1, page 36

LEED v4 and Low Carbon Building Materials2, page 19

Pervious paving, also known as permeable paving, allows water to pass through it, facilitating the recharging of aquifers. This type of paving reduces runoff by allowing water to soak into the ground, which can help replenish groundwater supplies and reduce the impact on nearby water bodies. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

A vegetated roof, also known as a green roof, is a roof that is partially or completely covered with vegetation and a growing medium, such as soil or compost. A vegetated roof can help reduce the heat island effect and manage rainwater runoff by providing the following benefits12:

It reduces the surface temperature of the roof by reflecting solar radiation and cooling the air through evapotranspiration, which is the process of plants releasing water vapor from their leaves. This can lower the ambient temperature of the surrounding area and improve thermal comfort for occupants and pedestrians.

It reduces the amount and speed of stormwater runoff by retaining and filtering rainwater in the vegetation and growing medium. This can prevent flooding, erosion, and pollution of downstream water bodies, as well as reduce the demand for potable water for irrigation or other purposes.

It enhances the biodiversity and habitat of the urban environment by providing a space for plants, animals, insects, and microorganisms to thrive. This can improve the ecological health and resilience of the ecosystem and provide aesthetic and recreational benefits for humans.

Other strategies that can contribute to reducing the heat island effect and managing rainwater runoff are:

White cement roof pavers: These are tiles made of concrete that have a high solar reflectance index (SRI), which measures how well a surface reflects solar radiation. White cement roof pavers can help reduce the surface temperature of the roof by reflecting more solar radiation than darker or less reflective materials. However, they do not provide any benefits for stormwater management, as they are impervious surfaces that do not retain or filter rainwater34.

A rainwater collection system: This is a system that captures and stores rainwater from roofs or other surfaces for reuse. A rainwater collection system can help reduce stormwater runoff by diverting rainwater from landfills or incinerators to other destinations, such as irrigation, toilet flushing, or cooling. However, it does not provide any benefits for reducing the heat island effect, as it does not affect the surface temperature of the roof or the surrounding air5 .

Shading structures that include photovoltaic panels: These are structures that provide shade for roofs or other surfaces by blocking direct sunlight. Shading structures that include photovoltaic panels can help reduce the heat island effect by lowering the surface temperature of the roof or the shaded area. They can also help generate renewable energy from solar power, which can reduce greenhouse gas emissions and energy costs. However, they do not provide any benefits for stormwater management, as they do not retain or filter rainwater .

The U.S. Green Building Council (USGBC) administers the LEED rating systems development. The LEED rating systems are frameworks that provide guidance and criteria for designing, constructing, operating, and maintaining green buildings. The USGBC is responsible for developing, maintaining, and updating the LEED rating systems through a consensus-based process that involves various stakeholders, such as technical experts, industry leaders, government representatives, and public comments. The LEED Green Associate Candidate Handbook states that “USGBC is committed to transforming the way our buildings are designed, constructed and operated through LEED” [1, p. 7]. References: LEED Green Associate Candidate Handbook, [LEED Rating Systems | U.S. Green Building Council]