Page 453 - The Engineering Guide to LEED-New Construction Sustainable Construction for Engineers

Notation 413

Symbol Chapter Definition (typical units as applicable)
R 2 Defined as the area of the hardscape that has an SRI of
at least 29
R 6 Ideal gas law constant. One value is 0.0821 L·atm/
Ideal
(mol · K)
R 2 Sum of the areas with high SRI excluding those areas
mod
that are shaded
RA 6 Floor area of regularly occupied room area j
j
RAT 6 Total floor area of all regularly occupied room areas
Rc 4 Refrigerant charge of system i (lb of refrigerant/ton
i ac
of cooling capacity)
REC 4 Renewable energy cost credit for on-site renewable
energy (energy $/yr)
REE 4 Renewable electrical energy credit for on-site renewable
energy (kWh/yr)
RH 3 Relative humidity (%)
RRL 2 Sum of the low-slope roofed areas with an areal
weighted average SRI greater than 78
RRS 2 Sum of the steep-slope roofed areas with an areal
weighted average SRI greater than 29 (RRS)
RW 3 Reuse water used for irrigation
S 2 Effective area of the hardscape that is shaded
3
3
S 10 Storage volume in a BMP (length , usually ft )
BMP
3
3
S 10 Storage volume in the gravel layer (length , usually ft )
Gravel
S 10 Storage volume in the pervious concrete layer (length ,
3
Pervious
3
usually ft )
SD 5 Standard deviation
SHOWERS 2 Number of showers required
SR 3 Shower water use rate for fixture type i (usually gal/
i
min or gpm)
SRI 2 Solar reflectance index
STRDECK 5 Total square footage of structural roof decking, interior
RE
floor decking, and the foundation with decking or slab on
grade which are intended to be reused from the existing
structure, excluding any areas that are considered to be
structurally unsound or hazardous materials
STRDECK 5 Total square footage of structural roof decking, interior
T
floor decking, and the foundation with decking or slab
on grade, excluding any areas that are considered to
be structurally unsound or hazardous materials