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2015 IRC Transition from the 2009 IRC Copyright 2015 International Code Council 1 2015 IRC Transition from the 2009 IRC 2015 IRC Transition from the 2009 IRC Based on the International Residential Code ® (IRC ® ) Marginal Markings in the IRC Marginal Markings in the IRC 2 solid vertical line technical change arrow deletion * single asterisk relocated elsewhere ** double asterisk relocated here Errata – iccsafe.org/errata-central/ Errata – iccsafe.org/errata-central/ iccsafe.org/ errata- central/ Errata page 3 Scope and Administration (Chapter 1) Scope and Administration (Chapter 1) Part 1 4

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Page 1: 2015 IRC Transition from 2009 PDF

2015 IRC Transition from the 2009 IRC

Copyright 2015 International Code Council 1

2015 IRC Transition from the 2009 IRC2015 IRC Transition from the 2009 IRCBased on the International Residential Code® (IRC®)

Marginal Markings in the IRCMarginal Markings in the IRC

2

▌ solid vertical line technical change

arrow deletion

* single asterisk relocated elsewhere

** double asterisk relocated here

Errata – iccsafe.org/errata-central/Errata – iccsafe.org/errata-central/ iccsafe.org/

errata-central/

Errata page

3

Scope and Administration (Chapter 1) Scope and Administration (Chapter 1)

Part 1

4

Page 2: 2015 IRC Transition from 2009 PDF

2015 IRC Transition from the 2009 IRC

Copyright 2015 International Code Council 2

R 101.2, R202 Scope – Accessory StructuresR 101.2, R202 Scope – Accessory Structures

Maximum height from 2 to 3 stories

Technical requirements removed from definition

Unlimited in area

2015 IRC Transition from the 2009 IRC 5

2015 R104.11 Alternative Materials, Design, and Methods of Construction and EquipmentR104.11 Alternative Materials, Design, and Methods of Construction and Equipment

Reason for disapproval in writing by the building official.

2015 IRC Transition from the 2009 IRC 6

2015

R105.2 Fences Exempt from PermitR105.2 Fences Exempt from Permit• Fences ≤ 7 feet high

2015 IRC Transition from the 2009 IRC 7

2012 R105.3.1.1 Existing Buildingsin Flood Hazard AreasR105.3.1.1 Existing Buildingsin Flood Hazard Areas

Determination of substantial improvement by building official

Related provisions consolidated in R105.3.1.1.

2015 IRC Transition from the 2009 IRC 8

2015

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2015 IRC Transition from the 2009 IRC

Copyright 2015 International Code Council 3

R106.1.4 Information for Construction in Flood Hazard AreasR106.1.4 Information for Construction in Flood Hazard Areas Construction documents

for Coastal A Zones Special hazard area landward

of V Zone (wave < 3 ft.) Include elevation of the bottom

of lowest horizontal structural member

Same as high hazard Zone V R322.3 Coastal high-hazard

areas

2015 IRC Transition from the 2009 IRC 9

2015

Building Planning (Chapter 3)Building Planning (Chapter 3)

Part 2

10

Table R301.2(1) Climatic and Geographic Design CriteriaTable R301.2(1) Climatic and Geographic Design Criteria The jurisdiction must indicate if it contains

special wind regions or wind borne debris zones

2015 IRC Transition from the 2009 IRC 11

2015Wind Design Criteria Wind Design Criteria 2012 IRC 2015 IRC R301.2.1 R301.2 A new map indicates the geographic locations that require wind design.

Ultimate design wind speed values replace basic wind speed values

2015 IRC Transition from the 2009 IRC 12

2015

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R301.2 Wind Speed MapsR301.2 Wind Speed MapsFigure R301.2(4)B Regions Where Wind Design Is Required >140 mph Vult non-hurricane areas (108 Vasd) >130 mph Vult hurricane areas (101 Vasd)

132015 IRC Transition from the 2009 IRC

2015R301.2 Wind Design CriteriaR301.2 Wind Design Criteria Location-specific wind speed values Applied Technology Council windspeed.atcouncil.org IRC: Use Risk Category II

142015 IRC Transition from the 2009 IRC

2015

R301.2 Wind Design CriteriaR301.2 Wind Design Criteria Cedar Rapids / Iowa City area ASCE 7-10 Risk Category II 115 mph Ultimate Design Wind Speed

152015 IRC Transition from the 2009 IRC

2015 R301.2.1.1.1 Sunrooms R301.2.1.1.1 Sunrooms R301.2.1 Wind design

criteria Sunrooms to comply

with AAMA/NPEA/NSA 2100-12.

Habitable and non-habitable

Conditioned and unconditioned

2015 IRC Transition from the 2009 IRC 16

2015

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R301.2.1.2 Protection of Openings in Wind Borne Debris RegionsR301.2.1.2 Protection of Openings in Wind Borne Debris Regions Prescriptive attachment

provisions for wood structural panels:

Mean roof height limit increased from 33 to 45 ft.

To permit on 3-story buildings

2015 IRC Transition from the 2009 IRC 17

2015 R301.2.1.4 Wind Exposure CategoryR301.2.1.4 Wind Exposure Category Wind Exposure Category A deleted Wind Exposure Category D: Unobstructed areas ≥5,000 ft.: Open water Mud and salt flats Unbroken ice fields Includes hurricane-prone regions.

2015 IRC Transition from the 2009 IRC 18

2015

R301.3 Story Height R301.3 Story Height Story height 11 ft 7in.: Wood and steel wall

framing Insulated concrete SIP walls

Masonry wall height is limited to 13 ft 7in.

2015 IRC Transition from the 2009 IRC 19

2015

11 ft. 7 in. Max.

Story height

Story height

R302.1 Exterior WallsR302.1 Exterior Walls2012 IRC 2015 IRCR302.1 R302.1 Separate tables

depending on sprinklers 3 ft separation with

sprinklers 5 ft without

Footnote a

• Overhangs:• Exception when

fireblocking is installed between the top of the wall and the roof sheathing

• Penetrations of exterior walls ≥3 ft do not require fire-resistant protection

2015 IRC Transition from the 2009 IRC 20

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R302.1 Exterior WallsR302.1 Exterior Walls

21

Modification: Minimum clearances to lot lines

No

Sprinklers Sprinklers

Sprinklers in All

Dwellings and 6-foot

Setback on Adjoining Lot

Unrated

Exterior

Wall

5 feet 3 feet 0 feet

2015 IRC Transition from the 2009 IRC

2012 R302.1 Exterior WallsR302.1 Exterior Walls

2015 IRC Transition from the 2009 IRC 22

2015

R302.2 Townhouse SeparationR302.2 Townhouse Separation

2012 IRC 2015 IRCR302.2.2 R302.2

Parapet exception:• No roof openings or

penetrations within 4 ft of the separating wall

Common walls separating townhouses:• 2 hrs without sprinklers• 1 hr with sprinkler system

2015 IRC Transition from the 2009 IRC 23

R302.2.2 Parapet ExceptionR302.2.2 Parapet Exception

24

Page 23

2012

2015 IRC Transition from the 2009 IRC

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R302.2Townhouse SeparationR302.2Townhouse Separation

2015 IRC Transition from the 2009 IRC 25

Common 1-hourfire-resistance-ratedwall continuousfrom foundation toroof sheathing

Common 2-hourfire-resistance-ratedwall continuousfrom foundation toroof sheathing

Townhousedwelling unit A

One-hour common wall for townhouses with sprinklers Two-hour common wall for townhouses without sprinklers

Townhousedwelling unit B

Townhousedwelling unit A

Townhousedwelling unit B

Electrical installations arepermitted in common wall.Electrical boxes must meetfire-resistant penetrationrequirements.

No plumbing,mechanical,ducts, or vents–in common wall

2015 R302.5.1 Garage Opening ProtectionR302.5.1 Garage Opening Protection Self-closing device on

door between garage and dwelling

2015 IRC Transition from the 2009 IRC 26

2012

Fire Protection of FloorsFire Protection of Floors2012 IRC 2015 IRCR302.13 (R501.3) R302.13 • Underside of floor

assembly• ½” gypsum board or • ⅝” wood structural panel or• equivalent material

• Exceptions• ≥ 2 ×10 dimension or SCL• Sprinklers below• ≤ 80 sq. ft. area• Crawl space with no fuel

fired appliances

• Moved from Chapter 5 to the fire-resistant construction provisions of Section R302.

• Does not regulate penetrations or openings in membrane.

2015 IRC Transition from the 2009 IRC 27

R302.13 Fire Protection of FloorsR302.13 Fire Protection of Floors

2015 IRC Transition from the 2009 IRC 28

2015

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R303.1, R303.3Mechanical VentilationR303.1, R303.3Mechanical Ventilation Mechanical ventilation must comply with new

Section M1507.3 whole-house ventilation of habitable rooms local exhaust of bathrooms

Section R202 Definitions whole-house mechanical ventilation system local exhaust

2015 IRC Transition from the 2009 IRC 29

2012

30

R303.4Mechanical ventilationR303.4Mechanical ventilation Whole-house mechanical

ventilation system required if tested with a blower door

test and air infiltration rate < 5 ACH N1102.4.1.2: Blower door

test required

2012

2015 IRC Transition from the 2009 IRC

R303.5 Ventilation Intake OpeningsR303.5 Ventilation Intake Openings The minimum vertical clearance between a

contaminant source and an outdoor air intake below has increased from 2 feet to 3 feet.

2015 IRC Transition from the 2009 IRC 31

2012 R303.7, R303.8 Stairway IlluminationR303.7, R303.8 Stairway Illumination Interior and exterior in

separate sections Interior to illuminate

treads and landings Exterior light source

at top landing Bottom landing

accessing basement

2015 IRC Transition from the 2009 IRC 32

2015

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R304.1 Minimum Habitable Room AreaR304.1 Minimum Habitable Room Area

Deletes 120 square feet minimum area

2015 IRC Transition from the 2009 IRC 33

2015 R305Ceiling HeightR305Ceiling Height 6 feet 8 inches: Bathrooms Toilet rooms Laundry rooms

6 feet, 4 inches all basements: Beams Girders Ducts Other obstructions

2015 IRC Transition from the 2009 IRC 34

2015

R308.4 Hazardous Locations for GlazingR308.4 Hazardous Locations for Glazing

Reorganization Each item in a separate

subsection with title

2015 IRC Transition from the 2009 IRC 35

2012

2006 201211 items 7 subsections10 exceptions

R308.4.2 Glazing Adjacent to DoorsR308.4.2 Glazing Adjacent to Doors Glazing installed

perpendicular to a door < 24 inches from door Safety glazing if on hinge

side of an in-swinging door

2015 IRC Transition from the 2009 IRC 36

2015

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Copyright 2015 International Code Council 10

Glazing and Wet SurfacesGlazing and Wet Surfaces2012 IRC 2015 IRCR308.4.5 R308.4.5• Combines provisions

• tubs • swimming pools

• “in walls … facing … bathtubs, showers …”.

• Not safety glazing when ≥ 60 in. from edge of

• Shower• Sauna• Steam room

2015 IRC Transition from the 2009 IRC 37

R308.4.6 Glazing Adjacent Stairs and RampsR308.4.6 Glazing Adjacent Stairs and Ramps

Stairs and ramps Intermediate landing 36 in. height

2015 IRC Transition from the 2009 IRC 38

2012

R308.4.7 Glazing Adjacent to the Bottom Stair LandingR308.4.7 Glazing Adjacent to the Bottom Stair Landing2012 IRC 2015 IRCR308.4.7 R308.4.7 36 in height. Area in front of the plane of the

bottom tread.

2015 IRC Transition from the 2009 IRC 39

R309.5 Garage Fire SprinklersR309.5 Garage Fire Sprinklers

Not required unless: Nonrated exterior wall of

garage constructed on lot line when: Sprinklers in garage Sprinklers for all homes in

subdivision 6-foot setback on adjacent lot

2015 IRC Transition from the 2009 IRC 40

2012

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R310 Emergency Escape and Rescue OpeningsR310 Emergency Escape and Rescue Openings Reorganized Separate provisions

for windows and doors Less precise sill height

measurement Grade floor or below

grade openings 5.0

2015 IRC Transition from the 2009 IRC 41

2015 R310.2.2 EEROWindow Well DrainageR310.2.2 EEROWindow Well Drainage Window wells serving

emergency escape and rescue openings

Direct surface water to the foundation drainage system

Except for locations with well-drained soils

2015 IRC Transition from the 2009 IRC 42

2012

R310.5, R310.6 Emergency Escape and Rescue Openings for Additions, Alterations and Repairs

R310.5, R310.6 Emergency Escape and Rescue Openings for Additions, Alterations and Repairs No additional

emergency escape and rescue openings: Basement addition with

access to an emergency escape and rescue opening

Alterations or repairs to an existing basement unless new bedroom

2015 IRC Transition from the 2009 IRC 43

2015 R311.7.3, R311.7.5.1 Stair RisersR311.7.3, R311.7.5.1 Stair Risers Vertical rise in stairway

without intermediate landing increased from 144 to 147 in.

Open risers based on distance above grade or the floor below (not total rise)

Open risers permitted on spiral stairways

2015 IRC Transition from the 2009 IRC 44

2015

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R311.7.6 Landing for StairwaysR311.7.6 Landing for Stairways Angular and curved

stair landings At a turn in a

stairway

2015 IRC Transition from the 2009 IRC 45

2012 R311.7.10.1 Spiral StairwaysR311.7.10.1 Spiral Stairways Definition omits requirement for center post to allow for

design flexibility Limits the radius at the walkline ≤ 24 in. Measurement for tread depth now matches the winder

provisions Measures at the intersection of the walkline and the tread

nosings rather than perpendicular to the leading edge of the tread

6 ¾ in. vs. 7 ½ in.

2015 IRC Transition from the 2009 IRC 46

2015

R311.7.10.1Spiral Stairways

R311.7.10.1Spiral Stairways

472015 IRC Transition from the 2009 IRC

2015R311.7.11, R311.7.12 Alternating Tread Devices and Ship LaddersR311.7.11, R311.7.12 Alternating Tread Devices and Ship Ladders

Added to the stair provisions. Neither approved for use as a

means of egress.

2015 IRC Transition from the 2009 IRC 48

2015

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R311.7.12 Ship LaddersR311.7.12 Ship Ladders Tread Depth ≥ 5 in. Projected tread

depth ≥ 8 ½ in. Riser height ≤ 9½ in. Net width ≥ 20 in. Handrail 30 – 34 in.

49

2015

2015 IRC Transition from the 2009 IRC

R311.8 RampsR311.8 Ramps Ramps that serve the

required egress door: 1:12 slope Unless infeasible

Other ramps: 1:8 slope

2015 IRC Transition from the 2009 IRC 50

2015

R312.1.2 Guard HeightR312.1.2 Guard Height Deletes provision for

measuring guard height from surface of adjacent fixed seating

2015 IRC Transition from the 2009 IRC 51

2015Window Fall ProtectionWindow Fall Protection2012 IRC 2015 IRCR312.2 R312.2

• Relocated from R612.2 to R312.2

• ASTM F 2090• Window opening

control devices• Window fall prevention

devices

• Revised to clarify the meaning

• Remove redundant language

• Achieve consistency with the IBC provisions.

2015 IRC Transition from the 2009 IRC 52

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Smoke AlarmsSmoke Alarms2012 IRC 2015 IRCR314 R314

• Recognizes wireless technology for interconnection

• Separate sections for:• Location• Power source• Interconnection

• Battery-operated permitted for alterations, repairs, and additions

• Addresses alarms installed near bathrooms and cooking appliances

• Household fire alarm systems no longer require monitoring by an approved supervising station.

2015 IRC Transition from the 2009 IRC 53

R314Smoke AlarmsR314Smoke AlarmsR314.3 Location

4. ≥ 3 ft horizontally from door of a bathroom

R314.3.1 Minimum distance from cooking appliances

Type of alarm Separation

Ionization 20 ft

Ionization with alarm-silencing switch 10 ft

Photoelectric 6 ft

54

2015

2015 IRC Transition from the 2009 IRC

Carbon Monoxide AlarmsCarbon Monoxide Alarms2012 IRC 2015 IRCR315 R315

• Recognizes carbon monoxide detection systems with separate detectors and notification appliances

• Per NFPA 720.

• Connection to house wiring with battery backup

• Exterior work no longer triggers CO alarm provisions for existing buildings

• Attached garage only considered if communicating with dwelling

• CO alarm in bedroom with fuel-fired appliance in the bedroom or adjoining bathroom

• CO detection systems only require detectors in locations prescribed by the code (not NFPA 720)

2015 IRC Transition from the 2009 IRC 55

R325MezzaninesR325Mezzanines Mezzanine. An

intermediate level or levels between the floor and ceiling of any story.

Limitations on ceiling height and openness consistent with the International Building Code (IBC).

2015 IRC Transition from the 2009 IRC 56

2015

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R326 Swimming Pools, Spas and Hot TubsR326 Swimming Pools, Spas and Hot Tubs The design and

construction of pools and spas shall comply with the International Swimming Pool and Spa Code (ISPSC).

Appendix G Swimming Pools, Spas and Hot Tubs

2015 IRC Transition from the 2009 IRC 57

2015

Building Construction (Chapters 4-10)Building Construction (Chapters 4-10)

Part 3

58

R403.1.1 Minimum Footing SizeR403.1.1 Minimum Footing Size Expanded tables Type of structure

Light frame Veneer Concrete

Type of foundation Slab on grade Crawl space Basement

Expanded tables Roof snow load 32-ft. wide house No. of stories

2015 IRC Transition from the 2009 IRC 59

2015 R403.1.1 Minimum Footing SizeR403.1.1 Minimum Footing Size

2015 IRC Transition from the 2009 IRC 60

2015

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Minimum Required FootingMinimum Required Footing Two-story house with slab on grade

foundation: Light-frame construction Soil-bearing strength @ 1500 psf Roof Live Load @ 20 psf 32ft. wide building with interior load-bearing wall

612015 IRC Transition from the 2009 IRC

R403.1.3 Footing and Stem Wall Reinforcing in Seismic Design Categories D₀, D₁, and D₂R403.1.3 Footing and Stem Wall Reinforcing in Seismic Design Categories D₀, D₁, and D₂

Defines required reinforcing

Updated figures

2015 IRC Transition from the 2009 IRC 62

2015

R403.1.6Foundation AnchorageR403.1.6Foundation Anchorage Anchor bolts in the middle

third of sill plate Measured to edge of bolt (Optimum 1¾ in.)

632015 IRC Transition from the 2009 IRC

R404.1.9 Isolated Masonry PiersR404.1.9 Isolated Masonry Piers Prescriptive provisions for isolated masonry pier

foundations supporting raised floor systems

2015 IRC Transition from the 2009 IRC 64

2012

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R404.4 Retaining WallsR404.4 Retaining Walls Retaining walls > 24 48 in. of unbalanced backfill

designed in accordance with accepted engineering practice (consistent with R404.1.3)

> 24 in. if resisting additional lateral loads Freestanding walls not supported at top Not supporting buildings

2015 IRC Transition from the 2009 IRC 65

2015 R405.1 Foundation DrainageR405.1 Foundation Drainage A filter membrane

is now required for perforated foundation drains

2015 IRC Transition from the 2009 IRC 66

2012

Tables R502.3.1(1), R502.3.1(2) Floor Joist Spans for Common Lumber SpeciesTables R502.3.1(1), R502.3.1(2) Floor Joist Spans for Common Lumber Species

Span lengths Decreased for

Southern Pine Increased for DFL and

HF

2 X 10 Floor JoistsDead load = 10 psfLive load = 40 psf16 in. o.c. spacing

2015 IRC Transition from the 2009 IRC 67

2015

Spans 2012 2015#2 SP 16 - 1 14 - 0#2 DFL 15 - 5 15 - 7#2 HF 15 - 2 15 - 2

#1 SP: 16 – 1 in 2015

R502.10 Framing of Floor OpeningsR502.10 Framing of Floor Openings Header joist and

trimmer connections deleted

This section conflicted with Section R502.6, which contains minimum bearing lengths for all joists and headers.

2015 IRC Transition from the 2009 IRC 68

2015

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R507 DecksR507 Decks2012 IRC 2015 IRCR507, R507.2 R507.2

• New section for all deck provisions

• Prescriptive provisions for deck ledger attachment revised to correlate with the National Design Specifications (NDS) for Wood Construction.

• Deck Ledger Connection to Band Joist• Clarified• Reorganized• Removes conflicting

and redundant language

2015 IRC Transition from the 2009 IRC 69

R507.2.4 Alternative Deck Lateral Load ConnectionR507.2.4 Alternative Deck Lateral Load ConnectionOptional Connections Figure 507.2.3(1): Two hold-down devices ≤ 2 ft of the ends of the deck

Figure 507.2.3(1): Four hold-downs

installed below the deck structure

2015 IRC Transition from the 2009 IRC 70

2015

R507.4DeckingR507.4Decking Max. deck joist

spacing for common decking materials

2015 IRC Transition from the 2009 IRC 71

2015 R507.5, R507.6, R507.7Deck Joists and BeamsR507.5, R507.6, R507.7Deck Joists and Beams Prescriptive methods for joists and beams in deck

construction. Spans & bearing requirements

2015 IRC Transition from the 2009 IRC 72

2015

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R507.8 Deck PostsR507.8 Deck Posts Minimum sizes of wood

posts supporting wood decks

Lateral restraint at bottom

2015 IRC Transition from the 2009 IRC 73

2015 Fastener Schedule for Structural MembersFastener Schedule for Structural Members2012 IRC 2015 IRC Table R602.3(1) Table R602.3(1)Table R602.3 (1) now includes requirements for nailing roof trusses to plates, abutting studs at intersecting wall corners, and connection of rim board to sill plates.

The Fastening Schedule now contains multiple nail size options. Roof rafter connections at ridge, valley, and hip are revised. Double top plate splicing is clarified. Clarification of the joist-to-band-joist (rim board) connection is added.

2015 IRC Transition from the 2009 IRC 74

R602.3.1 Stud Size, Height, and SpacingR602.3.1 Stud Size, Height, and Spacing Table R602.3.1 is deleted Exception for walls > 10 feet tall is added to the

text Snow loads < 25 psf Limited application

2015 IRC Transition from the 2009 IRC 75

2015R602.7 HeadersR602.7 Headers2012 IRC 2015 IRCR602.7, Table R602.7.1 R602.7, Tables R602.7(1),

R602.7(2), R602.7(3), R602.7.5

Prescriptive provisions for single member headers added.

Span tables moved from Chapter 5 to Chapter 6

Multi-ply and single header tables combined

New section on rim board headers

New table for porches New table for king studs

2015 IRC Transition from the 2009 IRC 76

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Table R602.7(3) Girder and Header Spans for Open Porches

Table R602.7(3) Girder and Header Spans for Open Porches

Size

Supporting RoofGround Snow Load (psf)

30 50Depth of Porch (feet)

8 14 8 142-2x8 10-1 7-7 8-3 6-22-2x10 12-4 9-4 10-1 7-72-2x12 14-4 10-10 11-8 8-10

77

Open Porch

2015

2015 IRC Transition from the 2009 IRC

Table R602.7.5 Minimum Number of Full Height Studs at Each End of Headers In Exterior Walls

Table R602.7.5 Minimum Number of Full Height Studs at Each End of Headers In Exterior Walls

78

Header Span (feet)

Maximum Stud Spacing (inches)

[per Table R602.3(5)]

16 24

3 1 14 2 18 3 212 5 316 6 4

2015

2015 IRC Transition from the 2009 IRC

Wall BracingWall Bracing

792015 IRC Transition from the 2009 IRC

R602.10 Wall BracingSummaryR602.10 Wall BracingSummary

2012 IRC 2015 IRC

Reorganization Inset distance BWP spacing Continuous sheathing end

conditions

Updated to Ultimate design wind speed

CS-PF & PFH modified Cripple walls

2015 IRC Transition from the 2009 IRC 80

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R602.10.2 Braced Wall PanelsR602.10.2 Braced Wall Panels Measurements to edge of BWP BWP ≤10 feet from both ends of BWL BWP at end in SDC D0, D1, D2 Exceptions for other end conditions

≤ 20 feet between BWPs 2 BWPs for BWL >16 feet

2015 IRC Transition from the 2009 IRC 81

2012

82

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2015

3500 lb. strap

Table R602.10.5 Min. Length BWPsTable R602.10.5 Min. Length BWPs

83

Method Minimum length (in) Contributing length (in)

Wall height (ft)8 9 10 11 12

PFH – roof only 16 16 16 18 20 48

PFH - story+roof 24 24 24 27 29 48

PFG SDC A, B, C 24 27 30 33 36 1.5 × Actual

CS-PF 16 18 20 22 24 ActualCS-PF SDC A, B, C 16 18 20 22 24 1.5 × Actual

CS-PF SDC D0, D1, D2 16 18 20 22 24 Actual

2015 IRC Transition from the 2009 IRC

2015R602.10.6.2 Method PFHR602.10.6.2 Method PFHPortal Frame with Hold-Downs Recent testing Minimum hold-down capacity

lowered to 3500 lbs Two sill plates are sufficient (3 in

2012 IRC)

842015 IRC Transition from the 2009 IRC

2015

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R602.10.7 Ends of Braced Wall Lines with Continuous SheathingR602.10.7 Ends of Braced Wall Lines with Continuous Sheathing

Adds end condition 3: Return panel or hold-

down not required at corner with a 48-inch braced wall panel

2015 IRC Transition from the 2009 IRC 85

2012 R602.10.11 Cripple Wall BracingR602.10.11 Cripple Wall Bracing Maximum distance between braced wall panels in a

cripple wall: Reduction is no longer required 2012 IRC = 14 ft. 2015 IRC = 20 ft.

1.15 increase in bracing amount still in effect Increased bracing is required if gypsum wall finish is not

applied Add 1.4 for wind and 1.5 for seismic

2015 IRC Transition from the 2009 IRC 86

2015

Simplified Wall BracingSimplified Wall Bracing2012 IRC 2015 IRCR602.12 R602.12 New section SDC A, B, C and

townhouses in SDC A or B Limitations on wind

speed, exposure category, building size and other criteria.

3-story buildings (previously 2)

Wind Exposure B and C Bracing units for C: 1.2;

1.3; 1.4 Wind speed (Vult) 115 and

130 mph

2015 IRC Transition from the 2009 IRC 87

R703.3 Siding Material Thickness and AttachmentR703.3 Siding Material Thickness and Attachment Replaced Table R703.4, Weather Resistant

Siding Attachment and Minimum Thickness New language clarifies limitations of table and

describes fastener type, length, and penetration. Footnotes to text Columns deleted

2015 IRC Transition from the 2009 IRC 88

2015

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R703.5 Wood, Hardboard, and Wood Structural Panel SidingR703.5 Wood, Hardboard, and Wood Structural Panel Siding

Minimum spacing based on siding thickness Moved from Table R703.4 footnote i to R703.5.2.

Requirements for vertical wood siding Moved from footnote j to R703.5.1

2015 IRC Transition from the 2009 IRC 89

2015 R703.7.3.2 Masonry Veneer LintelR703.7.3.2 Masonry Veneer Lintel Economical alternative for large masonry veneer

openings, limited to 18 feet, 3 inches

2015 IRC Transition from the 2009 IRC 90

2012

R703.7.4 Masonry Veneer AnchorageR703.7.4 Masonry Veneer Anchorage Wall ties Minimum fasteners Spacing to match TMS 402/ACI

530/ASCE 5 Horizontal spacing increased to 32”

Veneer air space requirements Placed in a new table

2015 IRC Transition from the 2009 IRC 91

2012 R703.7.4 Masonry Veneer AnchorageR703.7.4 Masonry Veneer Anchorage

2015 IRC Transition from the 2009 IRC 92

2012

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R703.9 Exterior Insulation and Finish SystemsR703.9 Exterior Insulation and Finish Systems Limitations for EIFS EIFS without drainage: Concrete and masonry

EIFS with drainage: All other wall assemblies

2015 IRC Transition from the 2009 IRC 93

2015 R703.11.1Vinyl Siding AttachmentR703.11.1Vinyl Siding Attachment Min. 1¼ inches into

“nailable substrate” or Through sheathing per test

report and manufacturer Nail 0.120 shank x 0.313

head 16 in. o.c.

942015 IRC Transition from the 2009 IRC

R703.12 Adhered Masonry Veneer

R703.12 Adhered Masonry Veneer

Minimum clearance and flashing requirements for exterior walls

2015 IRC Transition from the 2009 IRC 95

2012 R703.13, R703.14 Insulated Vinyl Siding and Polypropylene SidingR703.13, R703.14 Insulated Vinyl Siding and Polypropylene Siding

Insulated vinyl siding ≥ R-2 Continuous insulation Improved moisture control

Polypropylene siding requires separation: 5 ft. lot lines 10 ft. building on other lot

Fastening requirements

2015 IRC Transition from the 2009 IRC 96

2015

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R703.15, R703.16, R703.17 Cladding Attachment over Foam SheathingR703.15, R703.16, R703.17 Cladding Attachment over Foam Sheathing

To wood framing (R703.15),

To cold-formed steel framing (R703.16), and

To masonry or concrete walls (R703.17).

2015 IRC Transition from the 2009 IRC 97

2015 Tables R802.4, R802.5 Ceiling Joist and Rafter Span TablesTables R802.4, R802.5 Ceiling Joist and Rafter Span Tables Span lengths Decreased for

Southern Pine Increased for DFL

and HF

2015 IRC Transition from the 2009 IRC 98

2015

R802.7 Cutting, Drilling, and Notching of Roof MembersR802.7 Cutting, Drilling, and Notching of Roof Members References Section R502.8.1 Notching of cantilevered rafters

(R802.7.1.1) New section Actual minimum

dimension of 3½ inches New figure

R802.7.1.1 Ceiling joist taper cut requirements New figure

R802.7.1.2

2015 IRC Transition from the 2009 IRC 99

2012 802.11 Roof Uplift Resistance802.11 Roof Uplift Resistance New Table R802.11 Accurate prescriptive values Rafters and trusses Both low- and high-slope roofs Wind Exposure Categories B and C

2015 IRC Transition from the 2009 IRC 100

2012

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Table R802.11 Rafter or truss uplift connectionTable R802.11 Rafter or truss uplift connection

101

Rafter or Truss

Spacing

Roof Span (feet)

Exposure BUltimate Wind Speed Vult

(mph)115

Roof Pitch< 5:12 ≥ 5:12

24 in. o.c.28 198 17632 218 19436 240 212

2015 IRC Transition from the 2009 IRC

R806Roof VentilationR806Roof Ventilation Revised by placing two exceptions after the

general rule of 1/150 Exception for 1/300 vapor retarder on ceiling (only in cold-weather

climates) 40 – 50% of ventilation in upper portion ≤3 feet

below the ridge (previously 50-80)

Option to omit attic ventilation when approved (2015) Upper vents ≥3 feet above the eave vents (2012)

2015 IRC Transition from the 2009 IRC 102

2012

Unvented Attic AssembliesUnvented Attic Assemblies2012 IRC 2015 IRCR806.5 Table R806.5 Insulation for

condensation control Applies to rafter

assemblies (vaulted or cathedral ceilings)

Specifies applicable class of vapor retarder

Insulation board as air-impermeable barrier requires sealed edges

New footnote b allowing calculation of insulation thickness when the insulation is placed above the structural roof sheathing.

2015 IRC Transition from the 2009 IRC 103

R903.2.1 Roof Flashing LocationsR903.2.1 Roof Flashing Locations

General flashing provisions for all roofing Kick-out flashing where eave

of roof intersects a wall

2015 IRC Transition from the 2009 IRC 104

2012

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R903.2.2 Crickets and SaddlesR903.2.2 Crickets and Saddles Unit skylights or roof windows per

manufacturer’s installation instructions Cricket requirements

do not apply

2015 IRC Transition from the 2009 IRC 105

2012UnderlaymentUnderlayment2012 IRC 2015 IRCR905.2.7.2 R905.1.1, R905.1.2 Nominal wind ≥120 mph

(Vult ≥140 mph 2015) Metal or plastic cap

nails 12 in OC 6 in OC at side laps 4-in laps

Exception for self-adhering (ASTM D 1970)

Roof underlayment provisions combined into Section R905.1.1

3 tables listing underlayment type, application, and attachment.

Sections on ice barriers combined into Section R905.1.2

2015 IRC Transition from the 2009 IRC 106

R905.2.8.3 Sidewall FlashingR905.2.8.3 Sidewall Flashing Asphalt shingles

intersection at wall step flashing or continuous base flashing

2015 IRC Transition from the 2009 IRC 107

2012 R905.2.8.5 Roof Drip EdgeR905.2.8.5 Roof Drip Edge Roof drip edge required for asphalt shingles 2-inch laps Nails at 12 inches OC

2015 IRC Transition from the 2009 IRC 108

2012

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R905.16 Photovoltaic ShinglesR905.16 Photovoltaic Shingles Additional requirements

and limits for photovoltaic shingles

R905.16 Photovoltaic shingles.

R905.16.1 Deck requirements.

R905.16.2 Deck slope. R905.16.3 Underlayment. R905.16.4 Underlayment

application. R905.16.4.1 Ice barrier. R905.16.4.2 Underlayment

and high winds.

2015 IRC Transition from the 2009 IRC 109

2015 R907 Rooftop-MountedPhotovoltaic SystemsR907 Rooftop-MountedPhotovoltaic Systems

Requirements and limits for rooftop-mounted photovoltaic systems Wind resistance Fire classification Installation Ref. R324 and NFPA

70

110

Check errata to Section R324

2015 IRC Transition from the 2009 IRC

2015

111

2015 ISEPInternational Solar Energy Provisions & Commentary

2015 IRC Transition from the 2009 IRC

R907.3 Recovering versus Replacement of RoofingR907.3 Recovering versus Replacement of Roofing Does not require the removal of self-adhered ice

barrier underlayment Deletes all hail provisions hail exposure map related definitions limitations on reroofing in hail zones

2015 IRC Transition from the 2009 IRC 112

2012

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113

Chimney cap required (ASTM C 1283) Concrete, metal or stone Sloped to shed water Drip edge Caulked bond

break around flue liner

R1003.9.1 – Chimney capsR1003.9.1 – Chimney caps

Masonry chimney cap

2012

2015 IRC Transition from the 2009 IRC 114

Rain caps optional

Minimum criteria for installation

R1003.9.3 – Rain capsR1003.9.3 – Rain caps

Rain cap

2012

2015 IRC Transition from the 2009 IRC

R1005.7 Factory-built Chimney OffsetsR1005.7 Factory-built Chimney Offsets Factory-built chimney

assemblies installed vertically offsets ≤ 30 degrees maximum 4 elbows

115

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2012

2015 IRC Transition from the 2009 IRC

Energy Conservation (Chapter 11)Energy Conservation (Chapter 11)

Part 4

116

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Chapter 11Energy EfficiencyChapter 11Energy Efficiency Chapter 11 provisions extracted

from the applicable residential requirements of the IECC

2015 IRC Transition from the 2009 IRC 117

2012 N1101.13Compliance PathsN1101.13Compliance Paths

1. Sections N1101.14 through N1104.

2. Section N1105 and the provisions of Sections N1101.14 through N1104 labeled “Mandatory.”

3. An energy rating index (ERI) approach in Section N1106.

118

Projects shall comply with one of the following:

Prescriptive and mandatory provisionsPrescriptive and mandatory provisions

Performance and mandatory provisionsPerformance and mandatory provisions

2015 IRC Transition from the 2009 IRC

2015

Permanent Energy CertificatePermanent Energy Certificate

2012 IRC 2015 IRCN1101.14 (N1101.16) N1101.14 Indicate results of: blower door testing duct testing

Inside building: On wall in furnace

space or utility room, or Another approved

location

2015 IRC Transition from the 2009 IRC 119 120

Increased energy savings: Increased R-values Decreased U-factors Increased SHGC

N1102 – Building thermal envelopeN1102 – Building thermal envelope

Wood Wall R-ValueZone 2006 20126 19 20 + 57 & 8 21 20 + 5

2012

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N1102.1.3 R-Valve Computation- Insulated SidingN1102.1.3 R-Valve Computation- Insulated Siding Insulated siding as

continuous insulation in satisfying wall R-value.

Min R-2 Labeled R-value reduced

by R-0.6 for calculation purposes

2015 IRC Transition from the 2009 IRC 121

2015 N1102.2.4 Access Hatches and DoorsN1102.2.4 Access Hatches and Doors Vertical doors that

access unconditioned attics and crawl spaces: Do not require an R-

value to match the required wall insulation.

Must comply with the fenestration U-factor requirements of Table N1102.1.2.

2015 IRC Transition from the 2009 IRC 122

2015

N1102.2.7, Table N1102.1.2 R-Value Reduction for Walls with Partial Structural Sheathing

N1102.2.7, Table N1102.1.2 R-Value Reduction for Walls with Partial Structural Sheathing Moved from

footnote h of Table N1102.1.2 and placed in a new section

≤ 40% gross wall area

1232015 IRC Transition from the 2009 IRC

2015 N1102.2.8, Table N1102.4.1.1 Floor Framing Cavity InsulationN1102.2.8, Table N1102.4.1.1 Floor Framing Cavity Insulation Permits air space

above floor framing cavity insulation

Table N1102.4.1.1 reformatted into three columns to separate air barrier from insulation requirements.

2015 IRC Transition from the 2009 IRC 124

2015

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Table N1102.4.1.1 Insulation at Wall Corners and HeadersTable N1102.4.1.1 Insulation at Wall Corners and Headers Cavity insulation min. R-3 per inch of insulation

1252015 IRC Transition from the 2009 IRC

2015 N1102.4.1.2 Building Thermal Envelope TestingN1102.4.1.2 Building Thermal Envelope Testing Blower door test required Air-leakage rate: Zones 1-2: ≤ 5 ACH Zones 3-8: ≤ 3 ACH

Test results on permanent certificate

2015 IRC Transition from the 2009 IRC 126

2012

N1102.4.2, Table N1102.4.1.1 Wood-burning Fireplace Doors N1102.4.2, Table N1102.4.1.1 Wood-burning Fireplace Doors Doors on wood-burning

fireplaces must be listed for the application.

The requirement for gasketed doors on fireplaces has been removed.

2015 IRC Transition from the 2009 IRC 127

2015 N1103.3 Duct Sealing and TestingN1103.3 Duct Sealing and Testing The duct sealing and testing provisions have been

reorganized to clarify the application. The maximum duct leakage rates are now

prescriptive rather than mandatory provisions to accommodate design flexibility.

2015 IRC Transition from the 2009 IRC 128

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129

Building cavities (Mandatory) Cannot be used as ducts or plenums

Significant Changes to the International Residential Code 2012

N1103.3.5 (N1103.2.3)Building CavitiesN1103.3.5 (N1103.2.3)Building Cavities

2012 N1103.5 Heated Water Circulation and Temperature Maintenance SystemsN1103.5 Heated Water Circulation and Temperature Maintenance Systems

Automatic controls Continuously operating circulation pumps are

no longer permitted. Heat trace systems must comply with one of

the referenced standards.

2015 IRC Transition from the 2009 IRC 130

2015

N1103.5.3 (N1103.4.2) Hot Water Pipe InsulationN1103.5.3 (N1103.4.2) Hot Water Pipe Insulation Minimum R-3 insulation for hot water piping ≥ 3/4 in diameter Serving more than one dwelling unit Outside conditioned space Water heater to distribution manifold Under a floor slab or buried Supply and return piping in recirculation systems

other than demand recirculation systems

2015 IRC Transition from the 2009 IRC 131

2012

Includes minor changes in 2015 also

N1104.1 Lighting EquipmentN1104.1 Lighting Equipment

High-efficacy lamps required: 75% of lamps in

permanent luminaires or All lamps in 75% of

permanent luminaires

2015 IRC Transition from the 2009 IRC 132

2012

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Mechanical (Chapter 12 through 32) Mechanical (Chapter 12 through 32)

Part 5

1332015 IRC Transition from the 2009 IRC

M1301 Identification and Certification of Pipe, Tubing, and FittingsM1301 Identification and Certification of Pipe, Tubing, and Fittings All pipe, tubing, and fittings require manufacturer’s mark third-party testing or certification

New definitions supplement the provisions.

2015 IRC Transition from the 2009 IRC 134

2012

M1411.6 Locking Access Port CapsM1411.6 Locking Access Port Caps The code now

recognizes any approved means to prevent unauthorized access to outdoor refrigerant ports.

2015 IRC Transition from the 2009 IRC 135

2012 M1502.4 Dryer Exhaust DuctM1502.4 Dryer Exhaust Duct Support spacing increased from 4 to12 feet Mechanical fastening requiredScrew fasteners penetrate ≤ 1/8 inch

Specified length increased from 25 to 35 feet

2015 IRC Transition from the 2009 IRC 136

2012

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M1502.4.4, M1502.4.5 Dryer Exhaust Duct Power Ventilators M1502.4.4, M1502.4.5 Dryer Exhaust Duct Power Ventilators Dryer exhaust duct power

ventilators (DEDPVs) to increase the allowable exhaust duct length for clothes dryers.

Listed and labeled UL 705

Max. length per manufacturer

2015 IRC Transition from the 2009 IRC 137

2015 M1502.4.6Dryer Duct Length IdentificationM1502.4.6Dryer Duct Length Identification Permanent label

required where equivalent duct length >35 feet

Label not required where equivalent duct length ≤35 feet

Not based on whether the duct is concealed or not

2015 IRC Transition from the 2009 IRC 138

2015

M1503.4Makeup Air for Range HoodsM1503.4Makeup Air for Range Hoods Makeup air for kitchen

exhaust systems >400 cfm: Automatic damper, or Gravity damper Transfer openings are

permitted to obtain makeup air from rooms other than the kitchen

139

2015

2015 IRC Transition from the 2009 IRC

M1506Exhaust OpeningsM1506Exhaust Openings Termination ≥ 3 feet from property

line ≥ 3 feet from openings ≥ 10 feet from or 3 feet

above mechanical air intakes

2015 IRC Transition from the 2009 IRC 140

2012

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M1506.2 Exhaust Duct LengthM1506.2 Exhaust Duct Length Maximum exhaust duct lengths based on: Duct diameter Type of duct Exhaust fan airflow rating

2015 IRC Transition from the 2009 IRC 141

2015 M1507Mechanical VentilationM1507Mechanical Ventilation Whole-house mechanical ventilation Prescriptive air flow rate based on Area of dwelling Number of bedrooms Continuous or intermittent operation

Local exhaust Mechanical ventilation of kitchens and bathrooms

2015 IRC Transition from the 2009 IRC 142

2012

M1507.3 Whole-house mechanical ventilation systemM1507.3 Whole-house mechanical ventilation system System design: One or more supply or

exhaust fans, or a combination

Supply ventilation can be outdoor air ducts connected to the return side of air handler

System controls To enable manual override

1432015 IRC Transition from the 2009 IRC

M1601.1 Above-Ground Duct Systems

M1601.1 Above-Ground Duct Systems Stud cavities of

exterior walls are no longer permitted to be used for return air plenums.

2015 IRC Transition from the 2009 IRC 144

2012

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M1601.4 Duct InstallationM1601.4 Duct Installation Tapes and mastics used to seal sheet metal

ducts must be listed to UL 181 B as has been required for sealing flexible ducts.

Snap-lock and button-lock seams are no longer exempt from the sealing requirements.

2015 IRC Transition from the 2009 IRC 145

2015 M1601.4.1 Duct Joints, Seams and ConnectionsM1601.4.1 Duct Joints, Seams and Connections IMC & SMACNA HVAC Duct Construction

Standards Joints, seams and connections: Securely fastened Sealed Unlisted duct tape not

permitted for sealing

2015 IRC Transition from the 2009 IRC 146

2012

M1602Return AirM1602Return Air Return air provisions

reorganized & clarified Provisions for outdoor air

openings removed in favor of references to the applicable provisions for outdoor air in Chapter 3

Preserves intent to keep contaminants out of return air circulated throughout the dwelling

2015 IRC Transition from the 2009 IRC 147

2015 M1602.2 Prohibited Sourcesof Outdoor and Return AirM1602.2 Prohibited Sourcesof Outdoor and Return Air Permits return air from garage for system that

serves garage only 10-foot rule applies to atmospheric burner

appliances only

2015 IRC Transition from the 2009 IRC 148

2012

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M1901Ranges and OvensM1901Ranges and Ovens

Cooking appliances listed and labeled for household use

Commercial appliances prohibited

Vertical clearances clarified

2015 IRC Transition from the 2009 IRC 149

2012

Fuel Gas (Chapter 24)Fuel Gas (Chapter 24)

Part 6

1502015 IRC Transition from the 2009 IRC

G2404.11 Condensate PumpsG2404.11 Condensate Pumps Condensate pumps located in uninhabitable

spaces must be connected to the appliance to shut down the equipment in the event of pump failure.

2015 IRC Transition from the 2009 IRC 151

2015 G2409.1 Reduced Clearance to Combustible MaterialsG2409.1 Reduced Clearance to Combustible Materials Gypsum board is now specifically identified as a

combustible material for purposes of determining required clearances around gas-fired appliances.

2015 IRC Transition from the 2009 IRC 152

2012

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G2411.1.1 Electrical Bonding of Corrugated Stainless Steel TubingG2411.1.1 Electrical Bonding of Corrugated Stainless Steel Tubing

75-foot maximum allowable length of bonding jumper

Bonding methods must comply with NFPA 70

Devices, such as clamps, must be listed in accordance with UL 467

1532015 IRC Transition from the 2009 IRC

G2412, G2415 Pipe Identification and CertificationG2412, G2415 Pipe Identification and Certification All pipe, tubing, and fittings used in a fuel-gas

system now require Manufacture’s mark and Third-party testing or certification

New definitions supplement the provisions.

2015 IRC Transition from the 2009 IRC 154

2012

G2413.2 Maximum Gas DemandG2413.2 Maximum Gas Demand Table G2413.2 Approximate Input and the

reference to it were deleted The code requires the actual maximum input

rating of the appliances to be known and used for gas pipe sizing purposes.

2015 IRC Transition from the 2009 IRC 155

2015 G2414.6Plastic Pipe, Tubing and FittingG2414.6Plastic Pipe, Tubing and Fitting PVC and CPVC pipe are expressly prohibited

materials for supplying fuel gas.

2015 IRC Transition from the 2009 IRC 156

2015

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G2415.5Fittings in Concealed LocationsG2415.5Fittings in Concealed LocationsChange Type: Clarification Approved fittings:

1. Threaded elbows, tees and couplings

2. Brazed fittings3. Welded fittings4. Fittings listed to ANSI

LC-1/CSA 6.26 or ANSI LC-4.

2015 IRC Significant Changes 157

2015 G2415.7 Protection of Concealed Piping Against Physical DamageG2415.7 Protection of Concealed Piping Against Physical Damage Completely rewritten to address concealed

piping: Parallel to framing members Within framing members

Protection must extend well beyond edge of members that are bored or notched

2015 IRC Transition from the 2009 IRC 158

2015

G2419.4 Sediment TrapG2419.4 Sediment Trap A new figure for correct

configuration Not required for: Gas-fired decorative

vented appliances installed in vented fireplaces Gas fireplaces

2015 IRC Transition from the 2009 IRC 159

2012 G2421.2 Medium-Pressure RegulatorsG2421.2 Medium-Pressure Regulators Medium-Pressure (MP) line regulators installed

in rigid piping must have a union installed to allow removal of the regulator.

2015 IRC Transition from the 2009 IRC 160

2015

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G2422.1 Connecting Portable and Movable AppliancesG2422.1 Connecting Portable and Movable Appliances Connectors for portable gas appliances used

outdoors Gas hoses must comply with ANSI Z21.54.

Examples: gas grills fire pits patio heaters

2015 IRC Transition from the 2009 IRC 161

2015 G2426.7.1 Door Clearance to Vent TerminalsG2426.7.1 Door Clearance to Vent Terminals An appliance vent

terminal is not permitted in a location with 12 inches of the arc of a swinging door.

2015 IRC Transition from the 2009 IRC 162

2015

G2427.4.1, G2427.6.8.3 Plastic Piping for Appliance VentsG2427.4.1, G2427.6.8.3 Plastic Piping for Appliance Vents

Approval of plastic pipe for venting appliances is the responsibility of the appliance manufacturer and the appliance listing agency.

2015 IRC Transition from the 2009 IRC 163

2015 G2427.8 Venting System Termination LocationG2427.8 Venting System Termination Location A 10-foot separation is required when a vent

discharges in the direction of an opening in an adjacent building.

2015 IRC Transition from the 2009 IRC 164

2015

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G2439.4, G2439.7 Clothes Dryer Exhaust DuctsG2439.4, G2439.7 Clothes Dryer Exhaust Ducts Permits dryer exhaust duct power ventilators (DEDPVs)

to increase the allowable exhaust duct length for clothes dryers

Permanent label: Required where equivalent duct length >35 feet Not required ≤35 feet whether the duct is concealed or not

Instead of prohibiting all duct fasteners such as screws and rivets, the code now limits the penetration of fasteners, where installed.

2015 IRC Transition from the 2009 IRC 165

2015 G2442.4 Prohibited Sources of Outdoor and Return AirG2442.4 Prohibited Sources of Outdoor and Return Air Permits return air from garage for system that

serves garage only 10-foot rule applies to atmospheric burner

appliances only

2015 IRC Transition from the 2009 IRC 166

2012

G2447.2 Prohibited Location of Commercial Cooking AppliancesG2447.2 Prohibited Location of Commercial Cooking Appliances

The code does not prohibit the installation of cooking appliances that are listed as both commercial and domestic appliances.

2015 IRC Transition from the 2009 IRC 167

2015

Plumbing (Chapter 25 through 33)Plumbing (Chapter 25 through 33)

Part 7

1682015 IRC Transition from the 2009 IRC

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P2502.1, P2503.4 Inspection and Tests for Building SewerP2502.1, P2503.4 Inspection and Tests for Building Sewer When the entire sanitary drainage system is

replaced: Internal examination of underground and under slab

piping is required to verify: Size Slope Condition

A new provision prescribes a pressure test for a forced sewer at a test pressure of 5 psi greater than the pump rating.

2015 IRC Transition from the 2009 IRC 169

2015 P2503.5 Drain, Waste, and Vent Systems TestingP2503.5 Drain, Waste, and Vent Systems Testing The head pressure for a water test on drain,

waste, and vent (DWV) systems has been reduced from 10ft to 5ft.

2015 IRC Transition from the 2009 IRC 170

2015

P2503.5.1 Rough Plumbing TestP2503.5.1 Rough Plumbing Test

The IRC no longer permits air testing of plastic piping in DWV systems.

2015 IRC Transition from the 2009 IRC 171

2012 P2603.2.1 Protection Against Physical DamageP2603.2.1 Protection Against Physical Damage Edge distance

reduced from <1½ in. to <1¼ in.

Accommodates ½-in. dia. copper pipe in 2x4 framing

2015 IRC Transition from the 2009 IRC 172

2015

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P2603.3 Protection Against CorrosionP2603.3 Protection Against Corrosion The minimum thickness of sheathing material for

protection of piping against corrosion has been reduced from 0.025 inches to 0.008 inches (8 mil).

The corrosion protection requirement applies to metallic piping other than cast iron, ductile iron, and galvanized steel that is in direct contact with concrete, masonry or steel framing.

Previously, protection was only required for materials passing through walls and floors of these materials.

All metallic piping requires corrosion protection when located in corrosive soils.

2015 IRC Transition from the 2009 IRC 173

2015 P2603.4 Pipes through Foundation WallsP2603.4 Pipes through Foundation Walls A sleeve or relieving arch is not required for

pipes passing under a footing.

2015 IRC Transition from the 2009 IRC 174

2012

Table P2605.1 Piping SupportTable P2605.1 Piping Support Support spacing requirements for PEX and PE-RT

tubing 1¼ inches and greater in diameter have been added to the table.

Footnote b of Table P2605.1 clarifies the mid-story guide requirements for some types of vertical pipe 2 inches and smaller in diameter.

2015 IRC Transition from the 2009 IRC 175

2015 P2606 Sealing of Annular SpacesP2606 Sealing of Annular Spaces Sealing pipe

penetrations of the building envelope: Caulking material Foam sealant Gasketing system Serves to seal against air

leakage per IECC

2015 IRC Transition from the 2009 IRC 176

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P2609.1, 2609.4 Identification and CertificationP2609.1, 2609.4 Identification and Certification Pipe, fittings, and plumbing components identification of the manufacturer marking requirements of the applicable referenced

standard listed by a third-party certification agency Table P2608.4 and third-party testing requirements

have been deleted

2015 IRC Transition from the 2009 IRC 177

2012 Plumbing Fixtures, Waste ReceptorsPlumbing Fixtures, Waste Receptors2012 IRC 2015 IRCP2702.1, P2706.1 P2702.1, P2706.1

Plumbing fixtures: Include floor drains and

standpipes Strainers not required on

hub drains and standpipes Attics and crawlspaces

prohibited locations for waste receptors and standpipes

Clothes-washer standpipes permitted in bathrooms

A definition of waste receptor has been added to the code. Waste receptors are now permitted in bathrooms and closets.

WASTE RECEPTOR. A floor sink, standpipe, hub drain or a floor drain that receives the discharge of one or more indirect waste pipes.

2015 IRC Transition from the 2009 IRC 178

P2709.1, P2709.2 Shower Receptors and LiningP2709.1, P2709.2 Shower Receptors and Lining

Shower liner extension above finished threshold reduced from 3 to 2 inches

No minimum thickness for PVC and CPE liners

2015 IRC Transition from the 2009 IRC 179

2012 P2717 Dishwashing MachinesP2717 Dishwashing Machines The code now references the applicable standards for

integral air gaps protecting the potable water supply to dishwashers.

The term “food waste disposer” replaces “food waste grinder.”

Sections P2717.2 and P2717.3 regarding dishwasher discharge to the sink tailpiece or the food waste disposer have been combined into a single Section P2717.2, eliminating redundant language.

2015 IRC Transition from the 2009 IRC 180

2015

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Water Heater Drain Valves and PansWater Heater Drain Valves and Pans2012 IRC 2015 IRCP2801.5 P2801

Safety pan provisions: Apply to storage-

tank type water heaters and hot water storage tanks

Do not apply to tankless water heaters

Requires drain valves with a threaded outlet

Aluminum and plastic pans of the prescribed thickness acceptable.

Pan drain is not required when a water heater is replaced and there is no existing drain.

2015 IRC Transition from the 2009 IRC 181

P2804.6.1 Water Heater Relief Valve Discharge PipingP2804.6.1 Water Heater Relief Valve Discharge Piping The T&P relief valve

discharge pipe termination requires an air gap

PEX and PE-RT tubing used for relief valve discharge piping: Must be one size larger than

the T&P valve discharge outlet

Outlet end of the tubing must be fastened in place

2015 IRC Transition from the 2009 IRC 182

2015

P2901, P2910 through P2913 Nonpotable Water SystemsP2901, P2910 through P2913 Nonpotable Water Systems Nonpotable water outlets

identified The color purple identifies

distribution piping conveying nonpotable water.

New Sections P2910 through P2913 are extracted from the IgCC: Collection Storage Distribution

1832015 IRC Transition from the 2009 IRC

P2904.2.4.2 Minimum Fire Sprinkler Separation from ObstructionsP2904.2.4.2 Minimum Fire Sprinkler Separation from Obstructions

A new figure provides prescriptive values for minimum separation distances between fire sprinklers and obstructions.

Lesser distances are permitted in accordance with the manufacturer’s installation instructions.

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P2905 Heated Water Distribution SystemsP2905 Heated Water Distribution Systems Pointers have been added to the IRC plumbing

provisions to direct the user to the applicable energy conservation provisions of IRC Chapter 11 related to heated water distribution systems.

Section N1103.5 requires automatic controls to maintain hot water temperature for heated water circulation systems and for heat trace temperature maintenance systems when such systems are installed.

2015 IRC Transition from the 2009 IRC 185

2015 P2906.2 Lead Content of Drinking Water Pipe and FittingsP2906.2 Lead Content of Drinking Water Pipe and Fittings Water for drinking or

cooking Piping, fittings, joints: ≤0.25% lead content Federal law NSF 372

Other water supply piping: ≤8% lead content NSF 61

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P3003.9 Solvent Cementing of PVC JointsP3003.9 Solvent Cementing of PVC Joints Primer is not required for: DWV PVC pipe and fittings ≤4-inch pipe size Non-pressure application

2015 IRC Transition from the 2009 IRC 187

2015 P3003.19 Joints between Drainage Piping and Water ClosetsP3003.19 Joints between Drainage Piping and Water Closets Use of waste connector and sealing gasket is

now permitted as an alternative to a flanged connection for floor-mounted water closets.

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P3005.2 CleanoutsP3005.2 Cleanouts Section completely

reorganized Brass cleanout plugs are only

permitted for metallic piping Cleanout must be within 1½

inches of the finished wall surface

Cleanout is no longer required at the base of each waste or soil stack

2015 IRC Transition from the 2009 IRC 189

2015 P3007.3.5 Ejector Connectionto the Drainage SystemP3007.3.5 Ejector Connectionto the Drainage System

Discharge from ejector pumps permitted to connect to:

soil stacks waste stacks horizontal branch drains building sewers building drains

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P3008.1 Backwater ValvesP3008.1 Backwater Valves For existing buildings, fixtures that are located

above the next upstream manhole cover are allowed to discharge through a backwater valve.

2015 IRC Transition from the 2009 IRC 191

2015 P3103.1, P3103.2 Vent TerminalsP3103.1, P3103.2 Vent Terminals Where a minimum 3-inch diameter vent terminal is

required to prevent frost blockage in cold climates, the 3-inch diameter pipe must extend at least 12 inches inside the building’s thermal envelope.

The minimum 7-foot height requirement for vent terminations applies only to roofs used for purposes similar to residential decks, patios and balconies.

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P3103.1, P3103.2 Vent TerminalsP3103.1, P3103.2 Vent Terminals

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2015 P3103.5 Location of Vent TerminalP3103.5 Location of Vent Terminal The minimum

clearance to vent terminations above openings within 10 feet has been increased from 2 feet to 3 feet.

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Location of vent terminal

P3201.2 Trap Seal Protection Against EvaporationP3201.2 Trap Seal Protection Against Evaporation Trap seal protection against evaporation can

now be accomplished in a variety of ways, including trap seal primer valves supplied with nonpotable water and barrier-type trap seal protection devices

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2015

Electrical (Chapter 34 through 43)Electrical (Chapter 34 through 43)

Part 8

1962015 IRC Transition from the 2009 IRC

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E3608.1.2 Concrete-Encased ElectrodesE3608.1.2 Concrete-Encased Electrodes Separate parts to clarify

meaning. ≥ 20-foot length

≥ ½-inch electrically conductive reinforcing bars or

≥ 4 AWG bare copper conductor

≥ 2-inch encasement Concrete in direct contact

with earth

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2012 E3608.4 Supplemental Electrode RequiredE3608.4 Supplemental Electrode Required A rod, pipe, or

plate electrode requires a supplemental electrode unless testing confirms that the single electrode has a resistance to earth of 25 ohms or less.

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E3901.7 Outdoor OutletsE3901.7 Outdoor Outlets An outdoor outlet is

required for any size of deck, porch, or balcony that is accessible from inside the swelling unit.

2015 IRC Transition from the 2009 IRC 199

2012 E3901.9 Receptacle Outlets for GaragesE3901.9 Receptacle Outlets for Garages Garage receptacle

outlets must be served by a separate branch circuit that does not supply other outlets.

At least one receptacle outlet is required for each car space in a garage.

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E3901.11 Receptacle Outlets in FoyersE3901.11 Receptacle Outlets in Foyers Foyers > 60 square feet in area Receptacle in each wall space ≥ 3 feet

2015 IRC Transition from the 2009 IRC 201

2012 E3902.8, E3902.9, E3902.10 Ground-Fault Circuit Interrupter Protection

E3902.8, E3902.9, E3902.10 Ground-Fault Circuit Interrupter Protection

Laundry areas have been added to the list of locations requiring ground-fault circuit interrupter (GFCI) protection. Receptacles within 6 feet of bathtubs and showers, and receptacles for dishwashers also require CFGI protection.

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E3902.8, E3902.9, E3902.10 Ground-Fault Circuit Interrupter Protection

E3902.8, E3902.9, E3902.10 Ground-Fault Circuit Interrupter Protection Laundry areas Receptacles within 6 feet

of bathtubs and showers Receptacles for

dishwashers

203

2015

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E3902.14 Location of Ground-Fault Circuit Interrupters E3902.14 Location of Ground-Fault Circuit Interrupters When provided, ground-fault circuit interrupter

devices must be placed in a readily accessible location.

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E3905.8 Boxes at Fan OutletsE3905.8 Boxes at Fan Outlets When a ceiling outlet box is wired for a future

ceiling fan, the box must be listed for the support of a ceiling fan.

2015 IRC Transition from the 2009 IRC 205

2012 E4001.15 Switching Controlling Lighting LoadsE4001.15 Switching Controlling Lighting Loads Unless a means of

access for rewiring is provided, a grounded circuit conductor must be provided at the switch outlet.

2015 IRC Transition from the 2009 IRC 206

2012

E4002.14 Tamper-Resistant ReceptaclesE4002.14 Tamper-Resistant Receptacles Tamper-resistant

receptacles are not required for receptacles: ≥ 5½ feet above

the floor part of a luminaire

or appliance in a dedicated

space for an appliance

2015 IRC Transition from the 2009 IRC 207

2012 E4203.4.3 Location of Low-Voltage Luminaires Adjacent to Swimming PoolsE4203.4.3 Location of Low-Voltage Luminaires Adjacent to Swimming Pools Listed low-voltage luminaires meeting the

prescribed conditions are permitted to be located less than 5 feet from the water’s edge of swimming pools, spas, and hot tubs

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E4204.2 Bonded Parts of Pools, Spas, and Hut TubsE4204.2 Bonded Parts of Pools, Spas, and Hut Tubs2012 IRC 2015 IRCE4204.2 E4204.2

Metal parts ≤ 5 feet from pool, including Awnings Fences Metal door and window

frames Walls ≥ 5 feet high and < 3

feet from pool: Equipotential bonding

required on pool side of wall only

Perimeter equipotential bonding is not required: Listed as a self-contained spa

for aboveground use Not identified as suitable only

for indoor use Installation per manufacturer

and located on or above grade Top rim of the spa or hot tub is ≥28 in. above all perimeter surfaces within 30 in.

2015 IRC Transition from the 2009 IRC 209

E4209.3 Accessibility to Electrical Equipment of Hydromassage BathtubsE4209.3 Accessibility to Electrical Equipment of Hydromassage Bathtubs When located behind

access panels and serving hydromassage bathtubs, receptacle outlets must have their face in direct view and within 1 foot of the access opening.

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Appendices Appendices

Part 9

2112015 IRC Transition from the 2009 IRC

Appendix RLight Straw-Clay Construction Appendix RLight Straw-Clay Construction Prescriptive provisions Light straw-clay walls are

non-bearing infill around a structural frame.

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Appendix S Strawbale ConstructionAppendix S Strawbale Construction Prescriptive provisions for strawbale construction Strawbale walls may be bearing walls or nonbearing

infill around a structural frame depending upon the method of construction and detailing.

Appendix S contains requirements for both construction methods.

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What will you do differently with the changes in the code?

How will the changes affect the inspection and plan review process?

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Final ReflectionFinal Reflection

This slide will help the learner to reflect on the day and what they will take back to the job and apply. What? What happened and what was observed

in the training? So what? What did you learn? What difference

did this training make? Now what? How will you do things differently

back on the job as a result of this training?

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International Code Council is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request.

This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

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217

Copyright Materials

This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is

prohibited.

© International Code Council 2015

2015 IRC Transition from the 2009 IRC

Thank you for participatingThank you for participating

To schedule a seminar, contact:

The ICC Training & Education Department1-888-ICC-SAFE (422-7233) Ext. 33818

orE-mail: [email protected]

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