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54 Cards in this Set
- Front
- Back
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What is the intent of SS-Credit 1 Option B. Stormwater Management: Rate & Quantity?
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Limit disruption and pollution of natural water flow by managing stormwater runoff
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What are the requirements for Stormwater Management: Rate & Quantity?
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Less than or equal to 50% imperviousness and implement a stormwater mgmt plan that equals or is less than the pre-developed 1.5-year/24-hour rate & qty discharge
OR If greater than 50% impreviousness has implemented stormwater mgmt plan that reduced pre-developed 1.5-year/24-hour rate & qty discharge by 25% of annual stormwater load falling on site. *based on local rainfalls unless exceeds the 10-year annual average local rainfall; then use 10-year average |
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What submittals are required for Stormwater Management: Rate & Quantity?
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LEED Submittal Template signed by civil engineer or responsible party. Declare that the post-developed 1.5-year/24-hour peak discharge rate & qty does not exceed the pre-developed rate & qty.
*Include calculations showing thte existing site imperviousness is less than or equal to 50% |
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What is the calculation used to estimate the imperviousness of a project site?
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Identify surface types, calculate total area for each, get the runoff coefficient for each surface type, multiply by the area for impervious are for each surface type.
Impervious Area (SF) = Surface Area (SF)xRunoff Coefficient Imperviousness (%) = Total Pervious Area divided by Total Site Area |
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What are some technologies & strategies for Stormwater Management: Rate & Quantity?
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Maintain natural stormwater flows by promoting infiltration.
-Garden Roofs -Pervious Paving -Reuse stormwater for non-potable uses; landscape irrigation, toilet/urinal flushing, custodial uses |
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Are there exemplary performance credits with Stormwater Management: Rate & Quantity?
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No
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What is the intent of SS-Credit 1 Option E. Heat Island Reduction, Roof?
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Reduce heat islands (thermal gradient difference b/w developed and undeveloped areas) to minimize impact on microclimate and human & wildlife habitat.
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What are the requirements for Heat Island Reduction, Roof?
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Roofing having a Solar Reflective Index (SRI) greater than or equal to the EPA Energy Star Roof Criteria for a minimum of 75% of roof surface
OR green (vegetated) roof for at least 50% of roof area OR Combination high SRI & vegetated roof |
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What are some technologies & strategies for Heat Island Reduction, Roof?
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Install high-albedo & vegetated roofs to reduce heat absorption.
Vist ENERGY STAR website. *Note: Energy Star roofs do not autmatically achieve this credit. LEED applies standards that exceed Energy Star. |
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What submittal documentation is required for Heat Island Reduction, Roof?
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LEED-CI submittal template. Provide roof plan noting roofing material
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What is the exemplary performance credit for Heat Island Reduction, Roof?
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an additional 1/2 point is earned if 100% of roof area is vegeted
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What is Solar Reflectance?
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The ratio of reflected eletromagnetic energy to the incoming electromagnetic energy.
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What is Solar Reflectance Index (SRI)?
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Compares different material based on their reflectance and emissivity characteristics.
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What calculations are used to support Option E. Heat Island Reduction, Roof?
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Vegetated Roof Calculations
Reflective Roof Calculations |
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What is the intent of SS-Credit 1 Option H. Water Efficient Irrigation, No Potable Water Use or Irrigation?
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Limit or eliminate use of potable water for landscape irrigation
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What are the requirements for Option H. Water Efficient Irrigation, No Potable Water Use or No Irrigiation?
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Building that uses only captured rain or recycled site water to eliminate all potable water use for site irrigation (except for initial watering of plants) OR does not have a permanent landscaping irrigation system
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What submittals are required for Water Efficient Irrigation, No Potable Water Use or No Irrigation?
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-LEED Submittal Template signed for responsible architect and/or engineer
-Narrative of plant species and how plants will tolerate lack of irrigation -If water recycling is used, describe rain collection or recycled site water system -Calcuations (based on July conditions) OR Template signed for landscape architect or resp. party declaring no permanent irrigation system is used |
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What are potential technologies & strategies for Water Efficient Irrigation, No Potable Water Use or No Irrigation?
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-Perform soil/climate analysis
-Landscape with indigenous plants -Use rain-water collection systems -Use high efficiency irrigation systems (micro-irrigation, moisture sensors, clock timers, weather database controllers) -Use graywater systems for site irrigation |
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If a project contains no landscaping, can the credit for Water Efficient Irrigation, No Potable Water Use or No Irrigation be achieved?
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No - this credit would not apply
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Does the use of groundwater meet the requirements for Water Efficient Irrigation, No Potabel Water Use or No Irrigation?
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No
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What is the calculation for used for SS-Credit 1 Option G and H (Water Efficient Irrigation?
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Calculate irrigation system for the month of July and compare with irrigation volumes required for baseline landscape irrigation system.
Landscape Coefficient = Species Factor x Density Factor x Microclimate Factor |
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What is Landscape Coefficient?
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Indicates volume of water lost via evaportranspiration and is dependent on landscape species, density and microclimate.
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What is Species Factor?
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Accounts for variation of water needs by different plant species.
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What is Density Factor?
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Accounts for the number of plants and total leaf area of a landscape.
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What is Microclimate?
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Accounts for environmental conditions specific to landscape including temperature, wind and humidity
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What are examples of high Microclimate Factor areas?
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Parking lots, west sides of buildings, west and south sides of slopes, medians, areas experiencing wind tunnel effects
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What are examples of low Microclimate Factor areas?
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Shaded areas and areas protected by wind
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What is blackwater?
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Wastewater from toilets and urinals
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What is Graywater?
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Untreated household waste water which has NOT come in contact with toilet waste (water from bathtubs, showers, wash basins, clothes-washer, laundry tubs)
Some jurisdications allow kitchen sink wastewater to be included |
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What is Xeriscape?
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Referred to as "dry landscape" design adopt water conservation as the primary objective - based on native plant species that are adapted to local climate conditions
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What is the intent of SS-Credit 1 Option K. Onsite Renewable Energy?
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Encourage/recognize increasing levels of on-site renewable energy self-supply in order to reduce environmental impacts associated with fossil fuel energy use.
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What are the requirements of Option K. Onsite Renewable Energy?
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Building that supplies at least 5% of building's total energy use (expressed as fraction of annual energy cost) through the use of on-site renewable energy systems
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What is required for the credit submittal for Option K. Onsite Renewable Energy?
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LEED Submittal Template signed by Architect, Owner or responsible party.
Include narrative describing on-site renewable energy systems -calculation demonstrating at least 5% of total energy costs are supplied by on-site renewable energy sytems |
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What are some potential technologies & strategies with Option K. Onsite Renewable Energy?
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Assess the project for non-polluting renewable energy potential (solar, wind, geothermal, low-impact hydro, biomass and bio-gas strategies)
When applying these, take advantage of net metering with local utility |
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What does ASHRAE stand for?
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American Society of Heating, Refrigerating and Air-Conditioning Engineers
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What credit is ASHRAE 90.1 affiliated with?
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Sustainable Sites - Option K. Onsite Renewable Energy
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Is there an Exemplary Performance credit for Option K. Onsite Renewable Energy?
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Yes - an additional 1/2 point for 10% of total energy costs are supplied by on-site renewable energy systems
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What is Photovoltaic Energy?
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Electricity from photovoltaic cells that convert energy in sunlight to electricity
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What are three options to compute a project's energy cost?
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1. LEED Energy Modeling Protocol (EMP)
2. To compute the energy cost using a proposed energy rate schedule, preferably approved by ASHRAE 90.1-1999 |
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What is the intent of SS-Credit 3.1 Alternative Transportation, Public Transportatin Access?
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Reduce pollution and land development impacts from automobile use
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What are the requirements for Alternative Transportation, Public Transportation Access?
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Tenant to select a building within 1/2 mile of a commuter rail, light rail, or subway station or 1/4 mile of 2 or more public or campus bus lines usable by tenant occupants
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What submittals are required for Alternative Transportation, Public Transportation Access?
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LEED-CI submittal template signed by appropriate party
Provide area drawing or transit map highlighting the building location, fixed rail stations/buslines and indicate distances b/w them. Show scale bar for distance measurement - begin measurement at primary bldg entrance, not tenant space |
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What are some potential technologies & strategies for Alternative Transportation, Public Access Transportation?
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Perform a transportation survey of potential tenant occupants to identify transportation needs. Choose building near mass transit
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What is the intent of WE-Credit 1.1 Water Use Reduction, 20%?
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Maximize water efficiency within tenant spaces to reduce burden on municipal water supply and wastewater systems
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What are the requirements for Water Use Reduction, 20%?
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Apply strategies that use 20% less water than the water use baseline calculated for the tenant space (not including irrigtion) after meeting EPA 1992 fixture performance requirements
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What submittals are required for Water Use Reduction, 20%?
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LEED submittal template signed by MEP Engineer or other responsible party
Provide spreadsheet calcuation demonstrating water-consuming fixtures reduce occupancy-based potable water consumption by 20% compared to baseline conditions |
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What are potential technologies & strategies associated with Water Use Reduction?
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Use high efficiency fixtures such as composting toilet sytems, non-water using urinals and occupant sensors to reduce the potable water demand
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What reference standard is associated with Water Efficiency, WE-Credit 1 Water Use Reduction, 30% Reduction?
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EPAct
(The Energy Policy Act of 1992) Addresses energy and water use in commercial, institutional and residential facilities Established for water conservation of toilets, urinals, shower heads and faucets |
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What is excluded from the Water Use Reduction, 30% reduction credit, but can be used as an exemplary performance calculation?
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Water efficient dishwashers, clothes washers and other water consuming fixtures
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Does water savings impact energy performance?
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Yes - and requires commissioning and Measurement & Verification attention
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Do the fixtures need to be located in the tenant space to count for Water Use Reduction credit?
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No - they also don't need to be installed as part of the project scope of work. The design case rates and volumes should be for those fixtures the occupants use
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How are the gender ratios divided for the Water Use Reduction credit?
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Assumes that male occupants use the water closet once a day and urinal twice a day; females use water closet three times a day. All occupants use the lavs for 15 seconds for each restroom visit and the kitchen sink once a day
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What fixtures does EPAct cover?
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Lavatories, kitchen sinks, showers, hand wash fountains, janitor sinks, water closets and urinals
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What are examples of non-regulated and process water use fixtures?
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Dishwashers, clothes washers and cooling towers
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