LEED AP ID+C flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Certification point thresholds

LEED certification requires at least 40 points for Certified, 50 for Silver, 60 for Gold, and 80 for Platinum; ID+C v4 projects have 110 points available in total.

LEED ID+C minimum project size

An ID+C project must contain a minimum gross floor area of 250 square feet (23 square meters) within a single building to register and pursue certification.

LEED prerequisite rule

Prerequisites are mandatory requirements worth zero points; a project that fails any prerequisite cannot be certified no matter how many credit points it earned.

Credit Interpretation Request

A formal ruling requested through LEED Online when credit requirements are unclear for a specific project; the decision is published and treated as precedent for other projects.

Integrative process

A collaborative approach in which the owner, design team, contractor, and building operators analyze systems together early, before design decisions become locked in and expensive to change.

Goal-setting charrette

A pre-design workshop that brings all disciplines together to set measurable energy, water, and indoor environmental quality targets and to assign responsibility for meeting them.

Simple box energy model

A massing-level energy model used before design decisions are fixed, comparing orientation, envelope, and glazing options and helping right-size HVAC systems.

Quality transit walking distances

In LEED v4, quality transit is measured as one-quarter mile (400 meters) walking distance to a bus or BRT stop, or one-half mile (800 meters) to a rail station.

Diverse uses threshold

The surrounding density and diverse uses credit can be satisfied by locating within one-half mile (800 meters) walking distance of at least 10 diverse uses across multiple use categories.

Bicycle storage quantities

The bicycle facilities credit requires long-term storage for at least 5% of regular building occupants and short-term storage for 2.5% of peak visitors, with a minimum of four spaces each.

Heat island SRI values

Heat island reduction requires a solar reflectance index of at least 78 for low-slope roofs, 29 for steep-slope roofs, and solar reflectance of at least 29 for hardscape.

Construction activity pollution prevention

A Sustainable Sites prerequisite requiring an erosion and sedimentation control plan that conforms to the EPA Construction General Permit or stricter applicable local standards.

Rainwater management event size

The LEED v4 rainwater management credit requires managing runoff from the 95th percentile rainfall event using green infrastructure and low-impact development strategies.

Indoor water use prerequisite

The water efficiency prerequisite requires reducing aggregate indoor water use by at least 20% compared with the calculated baseline for fixtures, fittings, and appliances.

EPAct 1992 fixture baselines

Baseline rates used in LEED calculations: water closets 1.6 gallons per flush, urinals 1.0 gallons per flush, lavatory faucets 2.2 gallons per minute at 60 psi, showerheads 2.5 gallons per minute at 80 psi.

Cooling tower cycles of concentration

The cooling tower water use credit rewards increasing cycles of concentration, which reduces blowdown and makeup water demand; projects without cooling towers follow an alternative compliance path.

Minimum energy performance

An Energy and Atmosphere prerequisite requiring demonstrated energy cost improvement over an ASHRAE 90.1-2010 Appendix G baseline, documented by simulation or an approved prescriptive path.

Advanced energy metering

The credit requires permanent meters recording every end use representing 10% or more of annual consumption, with data collected at hourly or shorter intervals.

Fundamental refrigerant management

A prerequisite prohibiting CFC-based refrigerants in new HVAC and refrigeration equipment and requiring a phase-out plan where existing CFC systems continue in service.

Enhanced commissioning scope

Requires an independent commissioning authority who reviews the owner's project requirements and basis of design, verifies installation and performance, conducts seasonal testing, and delivers a systems manual with training.

Construction waste diversion tiers

The construction and demolition waste management credit awards one point for diverting 50% of waste and two points for diverting 75% away from landfill or incineration.

EPD product thresholds

The building product disclosure credit option one requires at least 20 different permanently installed products, from at least five different manufacturers, that have published environmental product declarations.

Recycled content valuation

Recycled content equals post-consumer content plus half of pre-consumer content, valued as a percentage of total permanently installed materials cost, with thresholds at 10% and 20%.

Interior reuse thresholds

The interiors life-cycle impact reduction credit awards points for reusing existing interior nonstructural elements such as walls, floors, and ceilings at the 25%, 50%, and 75% thresholds.

Environmental tobacco smoke control

An indoor environmental quality prerequisite prohibiting smoking inside the project and within a specified distance of entries, outdoor air intakes, and operable windows.

Flush-out air volume

The flush-out alternative to air testing requires supplying 14,000 cubic feet of outdoor air per square foot of floor area before occupancy, or 3,500 cubic feet per square foot after occupancy.

VOC paint limits

The low-emitting materials credit caps volatile organic compounds at 50 grams per liter for flat paints and 150 grams per liter for non-flat paints, with separate limits for coatings and adhesives.

Quality views requirement

The quality views credit requires a direct line of sight to perimeter vision glazing from at least 75% of the regularly occupied floor area of the project.

Innovation category points

The Innovation category offers 6 points: up to 5 for innovative strategies or exemplary performance and 1 for having an appropriately credentialed LEED Accredited Professional on the project team.

Exemplary performance

An Innovation path earned by exceeding the highest tier of an existing credit, typically doubling its threshold or reaching the next increment beyond the maximum listed.

Tenant design and construction guidelines

A Sustainable Sites credit requiring the project to provide tenants with design guidance and lease language so that future fit-outs preserve the building's sustainability features.

Green building education

An Innovation credit earned by providing publicly visible signage, tours, or outreach that explains the project's green building strategies and its measured performance.