Washington Administrative Code › Title 51 - Enterprise Services, Department of (Building Code Council) › Chapter 51-11C - State Building Code adoption and amendment of the 2021 edition of the International Energy Conservation Code, Commercial › Section 51-11C-20218 - Section C202.18-R

Current through Register Vol. 24-14, July 15, 2024
RADIANT HEATING SYSTEM.
A heating system that
				transfers heat to objects and surfaces within a conditioned space, primarily by
				infrared radiation.
READY ACCESS (TO).
That which enables a device,
				appliance or equipment to be directly reached, without requiring the removal or
				movement of any panel or similar obstruction.
REFRIGERANT DEW POINT.
The refrigerant vapor
				saturation temperature at a specified pressure.
REFRIGERATED WAREHOUSE COOLER.
An enclosed storage
				space that has a total chilled storage area of 3,000
				ft2 or greater and is designed to maintain a
				temperature of greater than 32°F but less than 55°F.
REFRIGERATED WAREHOUSE FREEZER.
An enclosed
				storage space that has a total chilled storage area of 3,000
				ft2 or greater and is designed to maintain a
				temperature at or below 32°F.
REFRIGERATION SYSTEM, LOW TEMPERATURE.
Systems for
				maintaining food product in a frozen state in refrigeration
				applications.
REFRIGERATION SYSTEM, MEDIUM TEMPERATURE.
Systems
				for maintaining food product above freezing in refrigeration
				applications.
REGISTERED DESIGN PROFESSIONAL.
An individual who
				is registered or licensed to practice their respective design profession as
				defined by the statutory requirements of the professional registration laws of
				the state or jurisdiction in which the project is to be constructed.
RENEWABLE ENERGY RESOURCES.
Energy derived from
				solar radiation, wind, waves, tides,
biogas
,
biomass
or extracted from hot fluid or steam heated within the
				earth.
RENEWABLE POWER PURCHASE AGREEMENT.
A power
				purchase agreement for off-site renewable energy where the owner agrees to
				purchase renewable energy output and the associated renewable energy
				certificates at a fixed price schedule.
REPAIR.
The reconstruction or renewal of any part
				of an existing building.
REPLACEMENT AIR.
Outdoor air that is used to
				replace air removed from a building through an exhaust system. Replacement air
				may be derived from one or more of the following: Make-up air, supply air,
				transfer air and infiltration. However, the ultimate source of all replacement
				air is outdoor air. When replacement air exceeds exhaust, the result is
				exfiltration.
REROOFING.
The process of recovering or replacing
				an existing roof covering. See "Roof Recover" and "Roof Replacement."
RESIDENTIAL BUILDING.
For this code, includes
				detached one- and two-family dwellings and multiple single-family dwellings
				(townhouses) as well as Group R-2 and R-3 buildings three stories or less in
				height above grade plane.
ROOF ASSEMBLY.
A system designed to provide
				weather protection and resistance to design loads. The system consists of a
				roof covering and roof deck or a single component serving as both the roof
				covering and the roof deck. A roof assembly includes the roof covering,
				underlayment, roof deck, insulation, vapor retarder and interior finish. See
				also
attic and other roofs
,
metal building
				roof
, roof with
insulation entirely above deck
and
single-rafter roof
.
ROOF RECOVER.
The process of installing an
				additional
roof covering
over a prepared existing
roof
				covering
without removing the existing
roof
				covering
.
ROOF REPAIR.
Reconstruction or renewal of any part
				of an existing roof for the purposes of its maintenance.
ROOF REPLACEMENT.
The process of removing the
				existing roof covering, repairing any damaged substrate and installing a new
roof covering
.
ROOFTOP MONITOR.
A raised section
				of a roof containing vertical fenestration along one or more sides.
R
-VALUE (THERMAL RESISTANCE).
The
				inverse of the time rate of heat flow through a body from one of its bounding
				surfaces to the other surface for a unit temperature difference between the two
				surfaces, under steady state conditions, per unit area (
h
· ft2
								·
								°F/Btu)
				[(m2
								· K)/W].
Reviser's note:
The brackets and enclosed
				  material in the text of the above section occurred in the copy filed by the
				  agency.