Page 470 - The Engineering Guide to LEED-New Construction Sustainable Construction for Engineers

430 App endix B

a given material has been computed, the SRI can be computed by interpolating between the
values for white and black. Materials with the highest SRI values are the coolest choices for
paving. Due to the way SRI is defined, particularly hot materials can even take slightly
negative values, and particularly cool materials can even exceed 100 (Lawrence Berkeley
National Laboratory Cool Roofing Materials Database).
Square Footage of a Building ‘Total area in square feet of all rooms including corridors,
elevators, stairwells, and shaft spaces.’ This is also referred to as the gross floor area (GFA).
Typically GFAs are given from outer wall to outer wall. The inclusion or exclusion of parking
garages has been defined in the LEED errata posted in the spring of 2007 as follows “Only
2 stories of a parking structure may be counted as part of building square footage. Surface
parking (only 1 story of parking) cannot count as part of building square footage; this is to
ensure efficient use of land adjacent to the building footprint. Both structured and stacked
parking are allowable in square footage calculations.”
Stormwater Runoff ‘Water volumes that are created during precipitation events and flow
over surfaces into sewer systems or receiving waters. All precipitation waters that leave
project site boundaries on the surface are considered to be stormwater runoff volumes.’ Note
that this also means from the site through storm sewers.
Sustainable Forestry ‘The practice of managing forest resources to meet the long-term forest
product needs of humans while maintaining the biodiversity of forested landscapes. The
primary goal is to restore, enhance, and sustain a full range of forest values—economic,
social, and ecological.’
Systems Performance Testing ‘The process of determining the ability of the commissioned
systems to perform in accordance with the Owner’s Project Requirements, Basis of Design,
and construction documents.’
Tertiary Treatment ‘The highest form of wastewater treatment that includes the removal of
nutrients, organic and solid material, along with biological or chemical polishing (generally
to effluent limits of 10 mg/L BOD and 10 mg/L TSS).’
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Thermal Comfort ‘A condition of mind experienced by building occupants expressing
satisfaction with the thermal environment.’
Threatened Species ‘An animal or plant species that is likely to become endangered within
the foreseeable future.’

Tipping Fees ‘Fees charged by a landfill for disposal of waste volumes. The fee is typically
quoted for 1 ton of waste.’
Total Suspended Solids (TSS) ‘Particles or flocs that are too small or light to be removed from
stormwater via gravity settling. Suspended solid concentrations are typically removed via
filtration.’
Underground Parking ‘A “tuck-under” or stacked parking structure that reduces the exposed
parking surface area.’

Urea Formaldehyde ‘A combination of urea and formaldehyde that is used in some glues
and may emit formaldehyde at room temperature.’
Urinal, Non-Water-Using ‘A urinal that does not use water, but instead replaces the water
flush with a specially designed trap that contains a layer of buoyant liquid which floats
above the urine layer, blocking sewer gas and urine odors from the room.’