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A project team has arranged to use recycled infrastructure components. Thirty percent (30%) by mass ot the new material infrastructure components contain post-consumer recycled content. Ten percent (10%) by mass of the infrastructure is on-site reuse materials.
What Is the minimum additional percentage of recycled content (by mass) that must come from pre-consumer materials?
For the scenario provided, where 30% of the infrastructure components contain post-consumer recycled content and 10% by mass are on-site reuse materials, an additional 10% of the infrastructure's mass must come from pre-consumer materials to meet the LEED requirements for recycled content.
Detailed Explanation:
Recycled Content Credit: The use of recycled materials in infrastructure contributes to sustainability by reducing the demand for virgin materials and minimizing waste. LEED credits are awarded based on the percentage by mass of recycled content in infrastructure materials.
Recycled Content Categories:
Post-consumer recycled content refers to materials recycled after they have been used by consumers, such as paper, metals, or plastics.
Pre-consumer recycled content involves materials that are recycled from manufacturing waste, before they reach the consumer, such as scraps or trimmings.
Required Additional Percentage: In this scenario, the project already has 30% post-consumer and 10% on-site reuse. To maximize the recycled content credit, an additional 10% by mass of the materials must come from pre-consumer recycled content, bringing the total recycled content to 50% (30% post-consumer, 10% pre-consumer, 10% on-site reuse).
The LEED Reference Guide for Neighborhood Development details the calculations and criteria for earning recycled content credits.
The LEED v4 Neighborhood Development documentation provides further information on the use of recycled materials in infrastructure.
For more information, consult:
Which of the following site conditions should be considered in the selection of renewable energy technologies for Green Infrastructure and Buildings Credit. Renewable Energy Production?
When selecting renewable energy technologies for the Green Infrastructure and Buildings Credit for Renewable Energy Production, site conditions such as wind exposure are crucial considerations. Wind exposure directly affects the feasibility and efficiency of wind energy systems, making it a key factor in determining whether wind turbines or other wind-based energy systems can be effectively implemented. While other factors like distance from a wetland or elevation above the floodplain are important for site selection, they are not directly related to the efficiency of renewable energy technologies like wind exposure is.
What agency is responsible for identifying prime and unique sods in agriculture and older associated industries?
The Natural Resources Conservation Service (NRCS), a division of the United States Department of Agriculture (USDA), is the agency responsible for identifying prime and unique soils in agriculture and other associated industries. Prime farmland is land that has the best combination of physical and chemical characteristics for producing food, feed, forage, fiber, and oilseed crops. The identification of such soils is crucial for ensuring that land development projects do not unnecessarily disturb valuable agricultural land. LEED credits often require consultation with NRCS or its local equivalent to verify the presence of prime soils and to make informed decisions about land use.
LEED v4 for Neighborhood Development, Current Version
LEED Reference Guide for Neighborhood Development
The intent of Neighborhood Pattern and Design Credit. Community Outreach and Involvement is to
The intent of the Neighborhood Pattern and Design Credit for Community Outreach and Involvement is to foster engagement and responsiveness to the needs and concerns of community members who live or work in the area being developed. This credit encourages developers to actively involve the community in the planning process, ensuring that the project aligns with the community's values and addresses local issues. It promotes transparency and collaboration, leading to developments that better serve the community's needs.
LEED v4 Neighborhood Development Guide: The guide emphasizes the importance of community outreach and involvement in the development process (USGBC, LEED v4 Neighborhood Development Current Version).
LEED Reference Guide for Neighborhood Development: Provides detailed strategies for achieving this credit by engaging with local community members and stakeholders (USGBC, LEED Reference Guide for Neighborhood Development).
What reference standard is used to determine compliance with Green Infrastructure and Buildings Prerequisite. Minimum Building Energy Performance when the whole building energy modeling option is used?
When using the whole building energy modeling option to determine compliance with the Green Infrastructure and Buildings Prerequisite for Minimum Building Energy Performance, the reference standard used is ASHRAE 90.1-2010. This standard provides the minimum requirements for energy-efficient design of buildings, excluding low-rise residential buildings. It is a widely recognized benchmark for energy performance in the United States and is used as the basis for LEED energy modeling requirements.
