Matrix of Changes
2018 National Standard Plumbing Code
March 2017
Item #
Section Number
Person Submitting Change
2015 Tabled Items
Committee Action
3/9/2017
NSPC Committee
Tabled
Person Submitting Change
Committee Action
NSPC Committee
Accepted
NSPC Committee
Accepted
18-007 1.2 Definitions: Drain Stack
NSPC Committee
Accepted
18-008 1.2 Defiitions: GGI, GRD, HGI
NSPC Committee
Accepted
18-009 1.2 Definitions: Hydraulic Height (Ponding)
NSPC Committee
Tabled
1.2 Defiitions Plumbing Appliance Equipment - Fixture
NSPC Committee
Accepted
Mark Fasel
Accept as Amended
NSPC Committee
Accepted
NSPC Committee
Accepted
18-017 1.2 Definitions: TAFR
NSPC Committee
Accepted
18-025 2.31 Plumbing in Flood Hazard Area
NSPC Committee
Accepted
NSPC Committee
Accepted
Michael Cudahy
Accepted
Clint Davison
Accept as Amended
14-78 10.12.4 Dwelling Units
2018 NSPC Proposed Changes
Item #
Section Number
Principle 17 Individual Sewage Disposal
Systems
1.2 Definitions Contamination, High Hazard,
18-006
Low Hazard
18-001
18-011
18-013 1.2 Definitions: Press-Connect Fittings
18-014 1.2 Definitions: Side Vent
18-015
1.2 Definitions: Stack Group, Stack Venting,
Sub Stack
Table 3.1.3 – Part III NON-METALLIC PIPE
AND FITTINGS
Table 3.1.3 – Part III NON-METALLIC PIPE
18-028
AND FITTINGS
Table 3.1.3 – Part III NON-METALLIC PIPE
18-029
AND FITTINGS
18-027
Table 3.1.3 – Part IV NON-METALLIC PIPE
AND FITTINGS
Clint Davison
Accept as Amended
NSPC Committee
Accepted
NSPC Committee
Accepted
Mark Fasel
Accepted
18-035 Table 3.4 Materials for Potable Water Piping
Larry Gill
Accepted
18-036 Table 3.4 Materials for Potable Water Piping
Clint Davison
Accept as Amended
18-037 3.4.1.2 Stainless Steel Piping
Dan O'Gorman
Accept in Principle
18-038 3.4.1.3 Potable Water Piping
NSPC Committee
Accept as Amended
18-039 Table 3.4.2 Plastic Water Service Piping
NSPC Committee
Accepted
18-040 Table 3.4.2 Plastic Water Service Piping
Clint Davison
Accept as Amended
18-041 Table 3.4.2 Plastic Water Service Piping
Larry Gill
Accepted
Larry Gill
Accepted
Clint Davison
Accept as Amended
Mark Fasel
Accepted
NSPC Committee
Accepted
Mark Fasel
Accepted
Mark Fasel
Accepted
NSPC Committee
Accepted
Clint Davison
Accept as Amended
Michael Cudahy
Accept as Amended
18-059 4.3.9 Plastic DWV Pipe to Other Materials
NSPC Committee
Accept as Amended
18-061 5.1 Seperate Traps for Each Fixture
NSPC Committee
Accepted
18-030
18-031 Table 3.1.3 Part IX Backflow Prevention
3.3.9 Fittings, Fixtures, Appliance, &
Appurtenances
Table 3.4 Materials for Potable Water Piping
18-033
Item 2
18-032
Table 3.4.3 Plastic Hot and Cold Water
Distribution
Table 3.4.3 Plastic Hot and Cold Water
18-043
Distribution
18-042
18-045
Table 3.5 Materials for Sanitary Waste
and Drain Item #9
18-049 4.2.5 Flared
18-050 4.2.6 Press-Connect Fittings
18-051
4.2.6 g Mechanically Crimped (Pressed)
Fittings
18-055 4.2.13 Gasketed Mechanical Couplings
18-056 4.2.14 Plastic Joints and Connections
18-057
4.2.14.3 Solvent Cement Joints in CPVC
Piping
18-064 5.4.5 Base if Stacks
NSPC Committee
Accepted
18-065 5.4.13 Cleanouts Equivalents
NSPC Committee
Accepted
18-066 6.2.1 General
NSPC Committee
Accepted
NSPC Committee
Accepted
18-068 6.2.1.2 Grease Removal Devices (GRD)
NSPC Committee
Accepted
18-069 6.2.1.3 Gravity Grease Interceptors (GGI)
NSPC Committee
Accepted
18-070 6.2.1.4 Grease Interceptors
NSPC Committee
Accepted
18-071 6.2.2 Reserved
NSPC Committee
Accepted
18-072 6.2.5 Food Waste Disposers
NSPC Committee
Accepted
18-073 6.2.6 Commercial Dishwashers
NSPC Committee
Accepted
18-075 6.2.12 Combination Systems
NSPC Committee
Accepted
18-077 7.3.2 Minimum Clearances
NSPC Committee
Accepted
18-078 7.4.1, 7.4.9, 7.4.10
NSPC Committee
Accept as Amended
18-079 7.4.2 Water Conservation
NSPC Committee
Accepted
18-081 7.7.1, 7.7.2
NSPC Committee
Accepted
18-082 7.8.1 Bathtubs
NSPC Committee
Accept as Amended
18-083 7.10.4 Showers
NSPC Committee
Accept as Amended
18-084 7.10.6 Shower Floor and Shower Pan Liners
NSPC Committee
Accepted
18-086 7.11.5 Sanitary Floor Sinks
NSPC Committee
Accepted
18-088 7.19.4, 7.19.5
NSPC Committee
Accepted
John Heine
Accepted
NSPC Committee
Accepted
18-067
6.2.1.1 Hydromechanical Grease Interceptors
(HGI)
18-089 7.22.2 Ultraviolet Lights
18-090
7.24 Plumbed megency Eyewash and Shower
Equipment
Donald Jones
Accepted
18-096 9.4 Special Wastes
NSPC Committee
Tabled
18-097 10.5.3 Backflow Preventers
NSPC Committee
Accept as Amended
Ron Lord
Accept as Amended
18-100 10.12 Water Supply Control Valves
NSPC Committee
Tabled
18-106 10.15 Hot Water (10.15.2)
NSPC Committee
Accepted
18-107 10.15 Hot Water (10.15.3)
NSPC Committee
Accepted
18-108 10.15 Hot Water (10.15.5)
NSPC Committee
Accepted
18-109 10.15. Hot Water (10.15.7)
NSPC Committee
Accept as Amended
Donald Jones
Accepted in Part
NSPC Committee
Accepted
Donald Jones
Accept in Principle
18-120 10.15.11 NEW Hot Water
NSPC Committee
Accepted
18-121 10.15.11 EXISTING Hot Water
NSPC Committee
Accept in Principle
Donald Jones
Accepted
NSPC Committee
Accepted
NSPC Committee
Accepted
NSPC Committee
Accepted
NSPC Committee
Accepted
NSPC Committee
Accepted
NSPC Committee
Tabled
NSPC Committee
Accept as Amended
18-093 9.3.1 Indirect Waste Receptors
18-098 10.5.13 Protection from Special Equipment
18-110 10.15.7
10.15.10, 10.15.11 Water Heaters Used for
Space Heating
10.15.10 Water Heaters Used for Space
18-119
Heating
18-117
18-126 10.16.7 Safety Devices for Pressure Vessels
10.16 Safety Devices for Pressure Vessels
(10.16.8)
10.20.2 c NFPA 13D Multipurpose
18-132
Residential Fire Sprinkler Systems
18-128
18-133 11.3 Drain Piping Installation
Table 11.4.1 Drainage Fixture Unit (DFU)
Values Bath or Combination Bath/Shower
Table 11.4.1 Drainage Fixture Unit (DFU)
18-140
Values Note 3
18-138
18-142 11.4.2 Fixture Units
18-143
11.4 Drainage Fixture Units (DFU) 11.4.4
Floor Drains
18-145 Table 11.5.1B Pipe Size
NSPC Committee
Accepted
18-151 11.5 Determining Drain Pipe Sizes 11.5.8
NSPC Committee
Accepted
18-153 11.7.6 Macerating Toilet Systems
NSPC Committee
Accepted
18-158 11.11 Suds Pressure Zones 11.11.2
NSPC Committee
Accept as Amended
18-161 12.3 Venting of Drain Stacks 12.3.2
NSPC Committee
Accepted
18-164 12.4 Vent Terminals
NSPC Committee
Accepted
18-166 12.6.2 Vertical Rise
Dan O'Gorman
Accepted
18-172 12.8 Fixture Vents 12.8.4
NSPC Committee
Accepted
18-174 12.10 Wet Venting
NSPC Committee
Accepted
18-175 12.11 Stack Venting RESERVED
NSPC Committee
Accepted
18-176 12.12 RESERVED
NSPC Committee
Accepted
12.13 Circuit and Loop Venting Battery
Venting
NSPC Committee
Tabled
18-178 12.13 Circuit and Loop Venting 12.13.2
NSPC Committee
Tabled
John Heine
Accepted
NSPC Committee
Tabled
NSPC Committee
Accept as Amended
18-183 12.17 Combination Waste and Vent
NSPC Committee
Tabled
18-184 13.1.10 Roof Drainage
NSPC Committee
Tabled
18-177
18-179
12.14.2b Subdrain Sump Pits for Atmospheric
Pumps
18-180 12.15 Suds Pressure Venting
18-182
12.16.8 Aggregate Size of Vent Terminals for
Building Drains
Accepted
18-185 13.3 Traps in Storm Drainage Systems
18-186 13.4.2 Rainwater Leaders
NSPC Committee
Accepted
18-188 13.6 Size of Storm Drain Piping
NSPC Committee
Tabled
18-189 Tables 13.6.1 & 13.6.2
NSPC Committee
Tabled
NSPC Committee
Accepted
NSPC Committee
Accepted
NSPC Committee
Accepted
Donald Jones
Accepted
Donald Jones
Accepted
NSPC Committee
Accept as Amended
NSPC Committee
Accepted
18-202 Chapter 19 Referenced Standards
NSPC Committee
Accepted
18-203 Table 19.1 Referenced Standards
Larry Gill
Accepted
18-204 Appendix A
NSPC Committee
Tabled
18-205 A.5 Sizing Storm Drainage Systems
NSPC Committee
Accepted
Clint Davison
Accept as Amended
18-208 Appendix B Table B.7.3.J
Larry Gill
Accepted
18-209 Appendix B Table B.7.3.G
Michael Cudahy
Accepted
Clint Davison
Accept as Amended
NSPC Committee
Accepted
NSPC Committee
Accepted
NSPC Committee
Accepted
NSPC Committee
Accepted
NSPC Committee
Accepted
NSPC Committee
Accepted
NSPC Committee
Accepted
18-190 13.7 Area Drains and Trench Drains
13.9 Controlled Flow Storm Water System
18-192 Special Design Plumbing Systems for
Stormwater
14.3 Medical Gas and Vacuum Piping
18-193
Systems
14.7 Cross Connection Control and Backflow
18-194
Prevention
18-195 14.8 Clinical Sinks and Bend Pan Washers
18-197 Chapter 15 Tests and Maintenance
18-201
Chapter 18 Mobile Home and Travel Trailer
Park Plumbing Requirements
18-206 Appendix B B7 Simplified Method for Sizing
18-210 Appendix B B9.7 Total Equivalent Length
18-211
18-212
18-214
18-215
18-216
18-217
18-218
Appendix E8 Air Admittance Valve: E8.1
Definitions
Appendix E8 Air Admittance Valve: E8.2
Where Required
Appendix E8 Air Admittance Valve: E8.3
Branch Relief Vents for Positive Pressure
Appendix E8 Air Admittanc Valve: E8.4
Installation
Appendix E8 Air Admittanc Valve: E8.5Vent
to Outdoors Required
Appendix E10 Controlled Flow Roof
Drainage
Appendix F Requirements of the Adopting
Agency and Authority Having Jurisdiction
18-219
Appendix I Fixture Unit Value Curves for
Water Closets
18-220 Appendix K Flow in Sloping Drains
NSPC Committee
Accepted
NSPC Committee
Accepted