Rhode Island Code of Regulations › Title 510 - Building Code Commission › Chapter 00 - N/A › Subchapter 00 - N/A › Part 8 - RISBC-8 State of Rhode Island Energy Conservation Code › Section 510-RICR-00-00-8.6 - Chapter 4[CE]

Current through June 14, 2024
Delete C401.2 Application. And add the following:
C401.2 Application. Commercial buildings
				 projects shall comply with the requirements in sections C403 (Building Envelope
				 Requirements), C403 (Building Mechanical Systems), C404 (Service Water
				 Heating), C405 (Electrical Power and Lighting Systems) and C406 (Tenant Spaces,
				 including C406.1.1) in its entirety. As an alternative, commercial buildings
				 projects shall comply with the energy cost budget method in ASHRAE/IESNA 90.1.
Delete without substitute section C401.2.1 Application to
					 existing building.
Delete Table C402.1.4 and substitute the following
TABLE C402.1.4
OPAQUE THERMAL ENVELOPE ASSEMBLY REQUIREMENTS
CLIMATE ZONE
5
All other
Group R
Roofs
Insulation entirely above deck
U-0.032
U-0.032
Metal buildings
U-0.035
U-0.035
Attic and other
U-0.027
U-00021
Walls, Above Grade
Mass
U-0.090
U-0.80
Metal building
U-0.052
U-0.052
Metal framed
U-0.064
U-0.064
Wood framed and other
U-0.064
U-0.064
Walls, Below Grade
Below-grade walls
C-0.119
C-0.119
Floors
Mass
U-0.074
U-0.064
Joist/Framing
U-0.033
U-0.033
Slab-on Grade Floors
Unheated slabs f
F-0.79/0.64
F-0.79/0.64
Heated slabs
F-0.58
F0.58
Opaque Doors
Swinging Door
U-0.37
U-0.37
Garage Door < 14% Glazing
U-0.31
U-0.31
a. Use opaque
				 assembly U-factors, C-factors, and F-factors from ANSI/ASHRAE/IESNA 90.1
				 Appendix A shall be permitted, provided the construction complies with the
				 applicable construction details from ANSI/ASHRAE/IESNA 90.1 Appendix
				 A.
b. When heated slabs are placed
				 below-grade, below grade walls must meet the F-factor requirements for heated
				 slabs.
c. The first value is for
				 perimeter the second value is for full slab insulation
Delete Table C402.1.3 and substitute the following:
TABLE C402.1.3
OPAQUE THERMAL ENVELOPE REQUIREMENTS
CLIMATE ZONE
5
ALL OTHERS
GROUP R
Roofs
Insulation entirely Above deck
R-30ci
R-30ci
Metal buildings (with R-5 thermal
								 blocksa,b)
(Assembly descriptions can be found in
ANSI/ASHRAE/IESNA Appendix A.)
(When using R-value compliance method, a thermal
								 spacer block shall be provided, otherwise use the U-factor compliance method in
								 Table C402.1.2.)
R-19 + R-11LS
R-19 + R-11LS
Attic and other
R-38
R-49
Walls, Above Grade
Mass
R-11.4ci
R-13.3 ci
Metal buildingc (When
								 using R-value compliance method, a thermal spacer block shall be provided,
								 otherwise use the U-factor compliance method in Table
								 C402.1.2.)
R-13 + R-13ci
R-13 + R-13ci
Metal framed
R-13 + R-7.5ci
R-13 + R-7.5ci
Wood framed and other
R-13 + R-3.8ci or R-20
R-13 + R-7.5ci or R-20 + R-3.8ci
Walls, Below Grade
Below grade
								 wallc
(R-5.7ci is allowed to be substituted with
								 concrete block walls complying with ASTM C 90, un-grouted or partially grouted
								 at thirty-two inches (32") or less on center vertically and forty-eight inches
								 (48") or less on center horizontally, with un-grouted cores filled with
								 materials having a maximum thermal conductivity of 0.44
								 Btu-in/h-
R-7.5ci
R-7.5ci
Floors
Mass
R-10ci
R-12.5ci
Joist/framing Steel/(wood)
R-30
R-30
Slab-on-Grade Floors
Unheated Slabs
R-10 for 24" below
R-10 for 24" below
Heated slabs
R-15 for 36" below + R5 Full Slab
R-15 for 36" below +
R5 Full Slab
Opaque doors
Swinging
U -0.37
U -0.37
Roll-up or sliding
R -4.75
R -4.75
For SI:1 inch = 25.4mm.
Ci = Continuous insulation. NR = No requirement.
a. Assembly descriptions can be found in
				 ANSI/ASHRAE/IESNA Appendix A.
b.
				 When using R-value compliance method, a thermal spacer block shall be provided,
				 otherwise use the U-factor compliance method in Table C402.1.2.
c. R-5.7ci is allowed to be substituted with
				 concrete block walls complying with ASTM C 90, ungrouted or partially grouted
				 at thirty-two inches (32") or less on center vertically and forty-eight inches
				 (48") or less on center horizontally, with ungrouted cores filled with
				 materials having a maximum thermal conductivity of 0.44 Btu-in/h-f2
				 F.
d. Where heated slabs are below
				 grade, below-grade walls shall comply with the exterior insulation requirements
				 for heated slabs.
e. Steel floor
				 joist systems shall be insulated to R-38.
Delete Table C402.4 and substitute the following
TABLE C402.4
BUILDING ENVELOPE REQUIREMENTS: FENESTRATION
CLIMATE ZONE
5
Vertical fenestration
U-factor
Fixed fenestration
0.38
Operable fenestration 0.45
Entrance door
0.77
SHGC
SHGC
S E W
PF<0.2 PF 0.2-0.5 0.38 /0.46 / PF> 0.5
								 0.61
N
PF <0.2 0.51 PF 0.2-0.5 0.56 PF >.5
								 0.61
Skylights
U-factor
0.50
SHGC
0.40
Add Exception: #8