2018 IRC Transition from 2012 IRC

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1 IRC Update IRC Transition from 2012 IRC Based on the International Residential Code (IRC ) Identify changes between the 2012 and IRC Apply code requirements to design, plan submittals and/or inspection. Identify the differences between 2012 and IRC. Explain how the changes impact design and construction under the IRC Nick Youngson - link to - Tips Guide to a successful class: Slides contain some text and iconic images to help you learn. Text and commentary is in the handout. Follow along in the course handout. Ask Questions, ask questions, ASK QUESTIONS!!!! Copyright 2017 International Code Council 1

2 IRC Update R 101.2, R202 Scope Accessory Structures Part 1 Scope and Administration and Definitions Maximum height from 2 to 3 stories Technical requirements removed from definition Unlimited in area R101.2 Scope Exceptions 1 through 5 R Alternative Materials and Methods of Construction Reason for disapproval Application, Equivalencies Copyright 2017 International Code Council 2

3 IRC Update R105.1, R110.1, R202 Change of Occupancy R Existing Buildings in Flood Hazard Areas Determination of substantial improvement by building official Related provisions consolidated in R R202 Definition of Access Chapter 3 Building Planning Copyright 2017 International Code Council 3

4 IRC Update Table 301.2(1) Climatic and Geographic Design Criteria Special wind region ACCA Manual J Windborne debris zone R Wind Design Criteria and Wind Speed Maps Figure R301.2(5)B Regions Where Wind Design Is Required >140 mph V ult non-hurricane areas (108 V asd ) >130 mph V ult hurricane areas (101 V asd ) R Sunrooms R Wind design criteria Sunrooms to comply with AAMA/NPEA/NSA Habitable and nonhabitable Conditioned and unconditioned R Protection of Openings in Wind Borne Debris Regions Prescriptive attachment of wood structural panels: Mean roof height limit increased from 33 to 45 ft. To permit on 3-story buildings Copyright 2017 International Code Council 4

5 IRC Update R 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. R301.3 Story Height Story height 11ft. 7in.: Wood and steel wall framing Insulated concrete SIP walls Masonry wall height is limited to 13 ft 7in. R302.1 Exterior Walls Story height Story height 11 ft. 7 in. Max. Copyright 2017 International Code Council 5

6 IRC Update R302.1 Exterior Walls Fireblocking not required R302.2 Townhouse Separation R302.2 Townhouse Separation R302.2 Townhouse Separation Copyright 2017 International Code Council 6

7 IRC Update R302.3 Two-Family Dwelling Separation R Fire Protection of Floors Moved from Chapter 5 to the fire-resistant construction provisions of Section R302. Does not regulate penetrations or openings in membrane. R Fire Protection R303.7, R303.8 of Floors above Crawl Spaces Stairway Illumination Interior and exterior in separate sections Interior to illuminate treads and landings Exterior light source at top landing Bottom landing accessing basement Copyright 2017 International Code Council 7

8 IRC Update R304.1 Minimum Habitable Room Area Deletes 120 square feet minimum area R305 Ceiling Height 6 feet 8 inches: Bathrooms Toilet rooms Laundry rooms 6 feet, 4 inches all basements: Beams Girders Ducts Other obstructions R 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 R Glazing Adjacent to Doors Copyright 2017 International Code Council 8

9 IRC Update R Glazing Adjacent to Doors R Glazing in Guards and Railings R Glazing in Guards and Railings R Glazing and Wet Surfaces Not safety glazing when 60 in. from edge of Shower Sauna Steam room Glass infill panels are not structural balusters Copyright 2017 International Code Council 9

10 IRC Update R Glazing Adjacent to the Bottom Stair Landing Area in front of the plane of the bottom tread. R Glazing Adjacent to the Bottom Stair Landing Hazardous location R310 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 R310.1 Emergency Escape and Rescue Openings Copyright 2017 International Code Council 10

11 IRC Update R310.3 Area Wells for Emergency Escape and Rescue Doors Bulkhead enclosure Area well R310.3 Area Wells for Emergency Escape and Rescue Doors 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 R and R Handrail Projection Copyright 2017 International Code Council 11

12 IRC Update R and R Handrail Projection R Vertical Rise in. 147 in. 151 in. R Stair Risers Open risers based on distance above grade or the floor below (not total rise) Open risers permitted on spiral stairways R , R Alternating tread devices & Ships ladders & Copyright 2017 International Code Council 12

13 IRC Update R311.8 Ramps Ramps that serve the required egress door: 1:12 slope Unless infeasible Other ramps: 1:8 slope R312.1 Guards Deletes provision for measuring guard height from surface of adjacent fixed seating R312.1 Guards R314 R314 Smoke Alarms Battery-operated permitted for alterations, repairs, and additions to existing buildings Household fire alarm systems no longer require monitoring by an approved supervising station. Copyright 2017 International Code Council 13

14 IRC Update R314 Smoke Alarms R314 Smoke Alarms Interconnection always required R314.3 Location 4. 3 ft horizontally from door of a bathroom R Minimum distance from cooking appliances Type of alarm Ionization Ionization with alarmsilencing switch Photoelectric Separation 20 ft 10 ft 6 ft R315 Carbon Monoxide Alarms IRC IRC House wiring & battery backup Exterior work OK Attached garage CO alarm in bedroom CO detection systems - locations per code Interconnection required for multiple CO alarms R322.3 Coastal High- Hazard Flood Zones & Copyright 2017 International Code Council 14

15 IRC Update R324.6 Roof Access for PV Solar Energy Systems R Solar Panels Near Emergency Escape and Rescue Openings R325 Mezzanines Mezzanine. An intermediate level or levels between the floor and ceiling of any story. Limitations on ceiling height and openness consistent with IBC R325.3 Mezzanine Area Limitation Copyright 2017 International Code Council 15

16 IRC Update R325.6 and R202 Habitable Attics R326 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 Chapter 4 Foundations R 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 Copyright 2017 International Code Council 16

17 IRC Update R Minimum Footing Size Minimum Required Footing Two-story house with slab on grade foundation: Light-frame construction Soil-bearing 1500 psf Roof Live 20 psf 32ft. wide building with interior load-bearing wall R Footing and Stem Wall Reinforcing in Seismic Design Categories D₀, D₁, and D₂ Defines required reinforcing Updated figures R Foundation Anchorage Anchor bolts in the middle third of sill plate Measured to edge of bolt (Optimum 1¾ in.) Copyright 2017 International Code Council 17

18 IRC Update Table R403.4 Crushed Stone Footings Table R403.3(1) Insulation requirements for frost protected footings R404.4 Retaining Walls Retaining walls > in. of unbalanced backfill designed in accordance with accepted engineering practice (consistent with R ) > 24 in. if resisting additional lateral loads Freestanding walls not supported at top Not supporting buildings R408.3 Unvented Crawl Space Copyright 2017 International Code Council 18

19 IRC Update Tables R (1), R (2) Floor Joist Spans for Common Lumber Species Chapter 5 Floors Span lengths Decreased for Southern Pine Increased for DFL and HF 2 X 10 Floor Joists Dead load = 10 psf Live load = 40 psf 16 in. o.c. spacing Spans 2012 #2 SP #2 DFL #2 HF #1 SP: 16 1 in R507 Decks R507.2, R507.3 Deck Materials Copyright 2017 International Code Council 19

20 IRC Update R507.3 Deck Footings R507.4 Deck Posts & Deck post size Beam plies Maximum height (ft. in.) 4 x 4 3 or more x 4 1 or x x x 8 14 R507.5 Deck Beams & R507.5 Deck Beams Copyright 2017 International Code Council 20

21 IRC Update R507.6 Deck Joists & R507.6 Deck Joists & R Alternative Deck Lateral Load Connection R507.7-R507.9 Decking, Vertical and Lateral Supports Optional Connections Figure (1): Two hold-down devices 2 ft of the ends of the deck Figure (1): Four hold-downs installed below the deck structure Copyright 2017 International Code Council 21

22 IRC Update Table R602.3(1) Fastener Schedule for Structural Members Chapter 6 Wall Construction The fastening schedule now contains multiple nail size options Box and air driven nails Roof rafter connections at ridge, valley, and hip Double top plate splicing Joist-to-band-joist (rim board) connection R Alternate Stud Heights & Tables R602.7(1), R602.7(2) Girder and Header Spans & Copyright 2017 International Code Council 22

23 IRC Update Tables R602.7(1), R602.7(2) Girder and Header Spans Dropped header with pony wall above Table R Full Height Studs at End of Headers & Wall Bracing Table R (4) Seismic Adjustment Factors Copyright 2017 International Code Council 23

24 IRC Update R Mixing Bracing Methods 3500 lb. strap Table R Min. Length BWPs Method Minimum length (in) Wall height (ft) Contributing length (in) PFH roof only PFH - story+roof PFG SDC A, B, C Actual CS-PF SDC A, B, C Actual Actual CS-PF SDC D 0, D 1, D Actual R Method PFH Portal Frame with Hold-Downs Recent testing Minimum hold-down capacity lowered to 3500 lbs Two sill plates are sufficient (3 in 2012 IRC) Copyright 2017 International Code Council 24

25 IRC Update R Method CS-PF Continuously Sheathed Portal Frame R Simplified Wall Bracing 3-story buildings (previously 2) Wind Exposure B and C Factor for no. of bracing units for Exp. C: x 1.2 for 1-story x 1.3 for 2-story x 1.4 for 3-story Wind speed (V ult ) 115 and 130 mph (90, 100 V asd ) R703.2 Water-resistive Barrier Chapter 7 Wall Coverings 1. Per manufacturer 2. Detached accessory buildings Copyright 2017 International Code Council 25

26 IRC Update R703.3 Siding Material Thickness and Attachment R Soffit Installation 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 And wood structural panels R Veneer Anchorage Through Insulation R703.9 Exterior Insulation and Finish Systems Limitations for EIFS EIFS without drainage: Concrete and masonry EIFS with drainage: All other wall assemblies Copyright 2017 International Code Council 26

27 IRC Update R Vinyl Siding Attachment Min. 1¼ inches into nailable substrate or Through sheathing per test report and manufacturer Nail shank x head 16 in. o.c. R Vinyl Siding Installation Over Foam Plastic Sheathing R703.13, R 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 R703.15, R703.16, R 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). Copyright 2017 International Code Council 27

28 IRC Update R802 Roof Framing Chapter 8 Roof-Ceiling Construction Reorganized R FRTW Labeling Tables R802.4, R802.5 Ceiling Joist and Rafter Span Tables Span lengths Decreased for Southern Pine Increased for DFL and HF Copyright 2017 International Code Council 28

29 IRC Update R806.2 Minimum Vent Area Both conditions to take reduction Zone 6,7,8 Class I-II vapor retarder 40-50% within 3 ft. of ridge Chapter 9 Roof Assemblies R Underlayment Underlayment and ice barrier provisions combined for all roofing types R Photovoltaic Shingles Additional requirements and limits for photovoltaic shingles R Photovoltaic shingles. R Deck requirements. R Deck slope. R Underlayment. R Underlayment application. R Ice barrier. R Underlayment and high winds. Copyright 2017 International Code Council 29

30 IRC Update R Building Integrated Photovoltaic Panels R907 Rooftop-Mounted Photovoltaic Systems Requirements and limits for rooftop-mounted photovoltaic systems Wind resistance Fire classification Installation Ref. R324 and NFPA 70 Check errata to Section R324 of the IRC ISEP International Solar Energy Provisions & Commentary Chapter 10 Chimneys and Fireplaces Copyright 2017 International Code Council 30

31 IRC Update R Chimney Insulation Shield Chapter 11 Energy Efficiency N1101.6, Definition of Air Barrier N1101.6, Definition of Building Thermal Envelope Copyright 2017 International Code Council 31

32 IRC Update N1101.6, Tables N (1) and N (2) Fenestration Definitions and U-Factors Clarification Opaque door N Compliance Paths Projects shall comply with one of the following: 1. Sections N through N Section N1105 and the provisions of Sections N through N1104 labeled Mandatory. 3. An energy rating index (ERI) approach in Section N1106. Prescriptive and mandatory provisions Performance and mandatory provisions N Permanent Energy Certificate Inside building: On wall in furnace space or utility room, or Another approved location N Building Thermal Envelope for Log Homes Blower door test still applies Copyright 2017 International Code Council 32

33 IRC Update Tables N and N Insulation and Fenestration Requirements Lower U- factors Zone 3 and above Tables N and N Prescriptive U-Factors N R-Valve N Reduction of Computation- Insulated Siding Ceiling Insulation Insulated siding as continuous insulation in satisfying wall R-value. Min R-2 Labeled R-value reduced by R-0.6 for calculation purposes Copyright 2017 International Code Council 33

34 IRC Update N 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 N N Mass Walls N , Table N Floor Framing Cavity Insulation Permits air space above floor framing cavity insulation Table N reformatted into three columns to separate air barrier from insulation requirements. RESNET/ICC 380 Copyright 2017 International Code Council 34

35 IRC Update N Duct Sealing and Testing Duct sealing and testing reorganized Maximum duct leakage rates now prescriptive for flexibility If not part of the heating or cooling system ductwork, ducts serving HRV or ERV do not require air test & N 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. N Lighting Copyright 2017 International Code Council 35

36 IRC Update N1106.3, N Maximum Energy Rating Index Chapters 12 through 23 Mechanical M Access to Furnaces within Compartments M Appliances Installed in Pits Copyright 2017 International Code Council 36

37 IRC Update M Dryer Exhaust Duct Termination M Concealed Dryer Exhaust Ducts 12.5 sq. in. M , M Dryer M Exhaust Duct Power Ventilators Dryer Duct Length Identification Dryer exhaust duct power ventilators (DEDPVs) Listed and labeled UL 705 Max. length per manufacturer Permanent label where >35 feet Not required where 35 feet Whether the duct is concealed or not Copyright 2017 International Code Council 37

38 IRC Update M Makeup Air for Kitchen Exhaust Systems Makeup air for kitchen exhaust systems >400 cfm: Automatic damper, or Gravity damper Transfer openings okay M Makeup Air for Kitchen Exhaust Systems Not required if all direct vent or mechanical draft vent Domestic cooking exhaust M Exhaust Duct Length Maximum exhaust duct lengths based on: Duct diameter Type of duct Exhaust fan airflow rating M Underground Duct Systems Copyright 2017 International Code Council 38

39 IRC Update M Duct Installation Tapes and mastics for sheet metal ducts listed to UL 181 B Snap-lock and button-lock seams no longer exempt from the sealing M Pressure Tests for Hydronic Piping M Thermal Barrier for Radiant Floor Heating Systems Chapter 24 Fuel Gas Copyright 2017 International Code Council 39

40 IRC Update G Condensate Pumps Condensate pumps Uninhabitable spaces Shut down equipment if pump fails G Prohibited Locations for Appliances G Electrical Bonding of G2411.2, G Electrical Corrugated Stainless Steel Tubing Bonding of CSST 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 Copyright 2017 International Code Council 40

41 IRC Update G Maximum Gas Demand Table G 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. G , G Schedule 10 Steel Gas Piping G Plastic Pipe, Tubing and Fitting PVC and CPVC pipe are expressly prohibited materials for supplying fuel gas. G Protection of Concealed Piping Against Physical Damage Rewritten to address concealed piping: Parallel to framing members Within framing members Protection must extend 4 inches beyond edge of members that are bored or notched Copyright 2017 International Code Council 41

42 IRC Update G Protection Against Corrosion G Shutoff Valve Location G Support for Shutoff Valves in Tubing Systems G Medium-Pressure Regulators Medium-Pressure (MP) line regulators installed in rigid piping must have a union installed to allow removal of the regulator. Copyright 2017 International Code Council 42

43 IRC Update G 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. G Venting System Termination Location 10-foot separation where vent discharges in the direction of an opening in an adjacent building. G2439.4, G Clothes Dryer Exhaust Ducts Dryer exhaust duct power ventilators (DEDPVs) UL 705 per manufacturer Permanent label: Duct length >35 feet Duct concealed or not Duct fasteners permitted G Forced Air Furnace Duct Size Copyright 2017 International Code Council 43

44 IRC Update G Commercial Cooking Appliances Chapters 25 through 33 Plumbing P2502.1, P Inspection and Tests for Building Sewers When the entire sanitary drainage system is replaced: Internal examination of underground and under slab piping is required to verify: Size Slope Condition P Drain, Waste, and Vent Systems Testing The head pressure for a water test on DWV systems has been reduced from 10 feet to 5 feet. Copyright 2017 International Code Council 44

45 IRC Update P Air Testing of PEX Piping P Connections to Public Sewer or Private Sewage Disposal System P Protection Against Physical Damage P2702.1, P Waste Receptors Edge distance reduced from <1½ in. to <1¼ in. Accommodates ½-in. dia. copper pipe in 2x4 framing 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. Copyright 2017 International Code Council 45

46 IRC Update P2704 Slip Joint Connections P Bathtub Overflow P2717 Dishwashing Machines References applicable standards for integral air gaps food waste disposer replaces food waste grinder. One or two compartment sink Sections P and P regarding dishwasher discharge to the sink tailpiece or the food waste disposer combined into a single Section P Discharge loop to underside of counter fastened or held in place. P2801 Water Heater Drain Valves and Pans 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. Copyright 2017 International Code Council 46

47 IRC Update P Plastic Pan for Gas- Fired Water Heaters Photo courtesy of Lowe's P Water Heater Relief Valve Discharge Piping The T&P relief valve discharge pipe termination requires an air gap PEX and PE-RT tubing: One size larger than the T&P valve discharge outlet Outlet end fastened in place P2901, P2910 through P2913 Nonpotable Water Systems Nonpotable water outlets identified Purple identifies distribution piping for nonpotable water New Sections P2910 through P2913: Collection Storage Distribution P , P2904 Backflow Protection for Fire Sprinkler Systems Copyright 2017 International Code Council 47

48 IRC Update P Water Hammer Arrestors P 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 P Saddle Tap Fittings on Water Distribution Piping P Joints Between PVC and CPVC Water Piping Copyright 2017 International Code Council 48

49 IRC Update P Prohibited Joints (Single PVC to ABS fitting) P Solvent Cementing of PVC Joints Primer not required for: DWV PVC pipe and fittings 4-inch pipe size Non-pressure application P Reduction in Pipe Size P Cleanouts Section completely reorganized Brass cleanout plugs only for metallic piping Cleanout 1½ inches of finished wall surface No longer required at base of each waste or soil stack Copyright 2017 International Code Council 49

50 IRC Update P Backwater Valves Existing buildings: Fixtures above next upstream manhole cover: Allowed to discharge through backwater valve P3103.1, P Vent Terminals Frost closure: 3-inch pipe transition 12 in. inside thermal envelope. 7-foot height applies to roofs for purposes similar to residential decks, patios and balconies. P Vent Pipe Terminations P3111 Combination Waste and Vent System Copyright 2017 International Code Council 50

51 IRC Update P Prohibited Installations for Air Admittance Valves P 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 E Garage Branch Circuits & Chapters 34 through 43 Electrical Copyright 2017 International Code Council 51

52 IRC Update E Wall Space for Receptacle Distribution E Appliances on 15 Amp Circuits E Garage Receptacle Outlet Location & E GFCI Protection for Crawl Space Lighting Outlets Copyright 2017 International Code Council 52

53 IRC Update E3902.8, E3902.9, E Ground-Fault Circuit Interrupter Protection E Nonmetallic- Sheathed Cable and Metal Boxes Laundry areas Receptacles within 6 feet of bathtubs and showers Receptacles for dishwashers E Cord- and-plug- Connected Appliances Table E Copyright 2017 International Code Council 53

54 IRC Update Appendix Q Tiny Houses Appendix Chapters Q, R, S Appendices Appendix R Light straw-clay construction & Appendix S Strawbale construction & Copyright 2017 International Code Council 54

55 IRC Update Discussion Activity Final 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? Copyright Materials 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. 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 2017 Copyright 2017 International Code Council 55

56 IRC Update Thank you for participating To schedule a seminar, contact: The ICC Training & Education Department ICC-SAFE ( ) Ext or Learn@iccafe.org Copyright 2017 International Code Council 56