VIRGINIA RESIDENTIAL CODE

VIRGINIA RESIDENTIAL CODE
2012 Code Update Training 4/27/2017 VIRGINIA RESIDENTIAL CODE Welcome to each of you! It’s good to have you here. The objective for this portion of 2012 Code Change Training is to make each of you aware of the major changes from the 2009 Virginia Residential Code to the 2012 Virginia Residential Code. We will be covering Chapter 2 (definitions) through Chapter 10 (Chimneys and Fireplaces) with a quick overview of Chapter 11 (Energy). Please refer to your 2012 Virginia Residential Code for the exact code language. Note that we cannot call it the VRC any longer: There now is a Virginia Rehabilitation Code (VRC). We will refer to our new book as the VA Residential Code Jack A. Proctor Virginia Building Code Academy Department of Housing and Community Development 2009 CCT/Presentation title/author

Agenda Virginia Residential Code Significant Changes 4/27/2017
We will cover the IRC and any Virginia amendments to it in chapter order. Feel free to follow along in your own code book. Codes changes specific to Virginia will be marked in yellow, so be sure to take note. Once we have finished reviewing all of the material, follow the final steps to receive credit for taking this course. 2009 CCT/Presentation title/author

Welcome! 4/27/2017 Please turn your cell phones off or set to vibrate
We will have one break for approximately 10 minutes near the mid point of this presentation. Restrooms are located… Lunch will be on your own Training is meant to be participatory. You are encouraged to speak up if you have any questions or comments. 2009 CCT/Presentation title/author

Chapter 2 4/27/2017 Definitions 2009 CCT/Presentation title/author

R202 Definitions Basement 4/27/2017 BASEMENT Revised definition
Old definition said “That portion of a building that is partly or completely below grade” New definition says “A story that is not a story above grade plane.” Lets see what that means>>> next slide 2009 CCT/Presentation title/author

R202 Definitions Story Above Grade Plane > 6’ = story
4/27/2017 Story Above Grade Plane > 6’ = story Basement ?? Story Above Grade Plane Grade Plane < 6’ = basement Story Above Grade Plane is: 1. any story with the finished floor entirely above the exterior grade, or to determine if a lowest floor is in fact a basement or a story above grade: where the finished floor of the bottom story is either at least 6 feet above grade plane (an average of the perimeter grade) then it would be considered a “basement” 3. This will come into effect later when we discuss the code change w.r.t. habitable attics This diagram shows how a basement and story above grade plane are determined based on the grade plane. 2009 CCT/Presentation title/author

R202 Definitions Exterior Wall Covering 4/27/2017
EXTERIOR WALL COVERING: A material or assembly of materials installed on the outside of the exterior walls. 2009 CCT/Presentation title/author

R202 Definitions Gray Water: Waste discharged from: lavatories
4/27/2017 Gray Water: Waste discharged from: lavatories bathtubs showers clothes washers and laundry trays Gray Water: was added by Virginia to correlate with new sections plumbing sections which were added by Virginia to address NonPotable water systems. 2009 CCT/Presentation title/author

R202 Definitions Gray Water: lavatories bathtubs showers
4/27/2017 Gray Water: lavatories bathtubs showers clothes washers and laundry trays This definition was added by Virginia to correlate with new sections P2909, P2910, and P2911 which were added by Virginia to address NonPotable water systems. 2009 CCT/Presentation title/author

R202 Definitions Local Exhaust 4/27/2017
LOCAL EXHAUST: An exhaust system that uses one or more fans to exhaust air from a specific room or rooms within a dwelling. 2009 CCT/Presentation title/author

R202 Definitions Structural Composite Lumber
4/27/2017 Structural Composite Lumber Manufactured wood elements bonded together with exterior adhesives LVLs PSLs LSLs OSLs STRUCTURAL COMPOSITE LUMBER: “structural members manufactured using wood elements bonded together with exterior adhesives.” LVLs – Laminated veneer lumber PSLs – Parallel strand lumber LSLs – Laminated strand lumber OSLs – Oriented strand lumber 2009 CCT/Presentation title/author

R202 Definitions Nonpotable Fixtures and Outlets
4/27/2017 R202 Definitions Nonpotable Fixtures and Outlets Nonpotable Water Systems Rainwater Stormwater Definitions added by Virginia Nonpotable fixtures: Fixtures and outlets that are not dependent on potable water for the safe operation to perform their intended use. Such fixtures and outlets may include, but are not limited to water closets, urinals, irrigation, mechanical equipment, and hose connections to perform operations, such as vehicle washing and lawn maintenance. Nonpotable water systems: Water systems for the collection, treatment, storage, distribution, and use or reuse of nonpotable water. Nonpotable systems include reclaimed water, rainwater, and gray water systems. Rainwater: Natural precipitation, including snow melt, from roof surfaces only. Stormwater: Precipitation that is discharged across the land surface or through conveyances to one or more waterways and that may include stormwater runoff, snow melt runoff, and surface runoff and drainage. 2009 CCT/Presentation title/author

Other newly defined terms: Guestroom Lodging House Nosings
R202 Definitions 4/27/2017 Other newly defined terms: Guestroom Lodging House Nosings Guestroom: A room(s) intended to be used by guests for living or sleeping purposes. Lodging House: A single family dwelling with a permanent occupant where rent is paid for guestrooms. Nosings: Formerly known as tread profiles. 2009 CCT/Presentation title/author

Chapter 3 Building Planning 4/27/2017
2009 CCT/Presentation title/author

R Wind Design Criteria 4/27/2017 Wind speeds now correlate with 2010 ASCE 7 90 Code updated to align with 2010 ASCE 7. Most of VA is 90 mph, but the Eastern Shore and Far Southeast carry higher wind design criteria. A special wind region is located in the Southwest. 100 110 2009 CCT/Presentation title/author

R Parapet Exception 4/27/2017 No openings or penetrations in the roof within 4 feet (1219 mm) of the common walls This just clarifies that no roof openings or penetrations are allowed within 4 feet of the common wall. This includes holes in the Type X gypsum cut out for ridge vents or VTRs. 2009 CCT/Presentation title/author

R303.4 Mechanical Ventilation
4/27/2017 N : Requires max 5 air changes per hour R303.4: If you have ≤5 air changes per hour whole house ventilation system is required (i.a.w. M1507). Whole House Mechanical Ventilation System Definition N1101.9: “An exhaust system, supply system, or combination thereof that is designed to mechanically exchange indoor air for outdoor air when operating continuously or through a programmed intermittent schedule to satisfy the whole-house ventilation rate.” Prescriptive ventilation requirements are in the Mechanical Code Section M1507: Exhaust ventilation system Supply ventilation system Balanced ventilation system Intermittent ventilation system 2009 CCT/Presentation title/author

R308.4.6 Glazing Adjacent Stairs & Ramps
4/27/2017 Hazardous location: 36” horizontal AND 60 36” vertical Glazing at top of stairs: not hazardous Glazing at stairway landings: changed hazardous location height from 60” to 36” above... Two changes w.r.t. glazing in hazardous locations: The code deleted a horizontal dimension for hazardous locations adjacent to stairways. It used to say 60” vertical AND 36” horizontal. Now just 36” vertically above the stairway. The ramification of this is that windows at the top of the stairs do not have to be safety glazed, and B. Windows adjacent to stairway and stairway landings are only required to be safety glazed if they are “less than 36 inches above the landing” (used to be 60” above the landing) 2009 CCT/Presentation title/author

R308.4.6 Glazing Adjacent Stairs & Ramps
4/27/2017 This slide provides a graphical depiction of the change mentioned in the previous slide. 2009 CCT/Presentation title/author

R308.4.7 Glazing Adjacent to the Bottom Stair Landing
4/27/2017 Hazardous location: 60” horizontally in any direction and 60 36” vertically from bottom tread. Horizontal: Hazardous location extends 60 inches from bottom tread (no longer says “in any direction”) Vertical: changed hazardous location height from 60” to 36” above… This change modifies both the horizontal and vertical hazardous location measurements: Changed horizontal requirement from “60 inches in any direction” to just “60 inches” - I am not sure what this accomplishes. Changed vertical requirement from 60 inches to 36 inches 2009 CCT/Presentation title/author

R308.4.7 Glazing Adjacent to the Bottom Stair Landing
4/27/2017 2009 CCT/Presentation title/author

R308.6.1 Tubular Daylighting Device (Definition)
4/27/2017 Definition: Tubular daylight device (TDD): A nonoperable fenestration unit, primarily designed to transmit daylight, from a roof surface to an interior ceiling via a tubular conduit. 2009 CCT/Presentation title/author

R310.2.2 Drainage Window wells:
4/27/2017 Window wells: Proper drainage by connecting to the building’s foundation drainage system or by an approved alternative method Window wells: Closing a loop hole in the code. Wasn’t specifically addressed in the 2009 code. Now requires drainage of window wells Exception for well-drained soil according to US Soil Classification System I soils…not too prevalent in this part of the country. Would you exempt it with a cover? The code does not specifically provide exception for covered window wells. 2009 CCT/Presentation title/author

R311.2.1 Interior Passage If the dwelling unit has:
4/27/2017 If the dwelling unit has: kitchen and living /entertainment on the same level as the egress door - Interior passage must be provided (34” cased openings) AND 2. bedroom and/or bathroom are on same level as egress door – interior passage must be provided to at least one bedroom and bathroom (34” doors) Read This: Where a dwelling unit has both a kitchen and a living or entertainment area on the same level as the egress door required by Section R311.2, an interior passage route shall be provided from such egress door to the kitchen and the living or entertainment area and to at least one bedroom and at least one bathroom containing a water closet, lavatory and bathtub or shower, where such rooms are provided on that same level. Any doors or cased openings along such interior passage route providing access to the areas identified above shall comply with the following. 1. Cased openings shall provide a minimum 34-inch clear width. 2. Doors shall be, at a minimum, nominal 34-inch doors. 2009 CCT/Presentation title/author

R311.2.1 Interior Passage Exceptions:
4/27/2017 R Interior Passage Exceptions: A door or cased opening at the end of and facing a hallway Closet and pantry doors Doors to bathrooms accessed from a bedroom not on the interior passage Read This: Exceptions: 1. Where a door or cased opening, and its associated molding or trim, is at the end and facing the length of a hallway and the width of the hallway is not wide enough to accommodate such doors or cased openings. 2. Closet doors or cased openings. 3. Pantry door or cased openings. 4. Bathrooms accessed directly from a bedroom that is not required to comply with this section. 2009 CCT/Presentation title/author

House has a kitchen and living /entertaining room on the same level as the required egress door:
Both rooms must have at least 34” wide cased openings If there is also a bedroom and bathroom on this same floor, At least one bedroom and one bathroom must have a 34” door.

If there are more than one bedroom on the same level, only one is required to have a 34” door
There is an exception that says if the bedroom or bathroom doorway is at the end of the hallway, then it could be exempt.

If the door to the bedroom is exempt, then a bathroom off the bedroom is also exempt. However, if there are other bedrooms or bathrooms that are not at the end of the hallway, they would not be exempt.

R311.3.1 Floor Elevation at the Required Egress Door
4/27/2017 Exception: The exterior landing or floor shall be ≤ 81/4” below the top of the threshold Changed from 7 ¾” to 8 ¼” to align with State stair measurements 2009 CCT/Presentation title/author

R311.7.6 Landing for Stairways
4/27/2017 The minimum width of landings perpendicular to the direction of travel shall be no less than the width of the flight served Landings of shapes other than square or rectangular shall be permitted Landings for stairways must be at least as wide as the stairway. Landing for stairways must be at least 36” in the direction of travel (Landings of shapes other than square or rectangular shall be permitted) Provided the depth at the walk line and the total area is not less than that of a quarter circle with a radius equal to the required landing width. As in the existing requirement, where the stairway has a straight run, the minimum depth in the direction of travel shall be not less than 36 inches (914 mm). 2009 CCT/Presentation title/author

4/27/2017 Profile of stairway width 36” 36” 4½” 4½” This is not changed: Stairways must be at least 36” wide above the handrails. Handrail(s) may project 4.5” into the stairways. The stairway must be at least 27” wide with two handrails or 31.5” if one handrail is provided. 4½” 31.5” 27” 31 2009 CCT/Presentation title/author

4/27/2017 R Landing for Stairways “Landings of shapes other than square or rectangular shall be permitted - provided the depth at the walk line and the total area are not less than that of a quarter circle with a radius equal to the required landing width.” 2009 CCT/Presentation title/author

R314.1 Smoke Detection and Notification
4/27/2017 Physical interconnection of smoke alarms is not required when there is a wireless interconnection Wireless smoke alarms are allowed when installed in accordance with manufacturer’s specifications 2009 CCT/Presentation title/author

R315.2 Carbon Monoxide Detection Systems
4/27/2017 A household CO detection system is now allowed A whole house CO detection system is allowed as an alternative to self contained CO alarms Must be installed in accordance with NFPA 720 It can be part of a whole house detection system. The system may be monitored by a private monitoring company but the equipment must be owned by the homeowner. 2009 CCT/Presentation title/author

R316.4 Thermal Barrier 4/27/2017 Foam plastic requires separation from the interior of the building with a minimum ½” gypsum wallboard or other materials as allowed by NFPA 275 STYROFOAM® (blue stuff) The section now references a standard rather than providing prescriptive requirements. Code has been trying for several cycles to make this easier to understand without limiting the use of alternative materials. The new NFPA 275 was developed to specifically to address the testing of materials which may qualify as a “thermal barrier” Materials other than ½” gypsum can now be approved when tested and approved in accordance with both the Temperature Transmission Fire Test and the Integrity Fire Test of NFPA 275. Polystyrene foam Spray polyurethane foam (SPF) 2009 CCT/Presentation title/author

R Attics # 3.7 4/27/2017 1½” thick cellulose insulation has been added to the list of “ignition barriers” This “ignition barrier” is allowed to be used in place of the “thermal barrier” requirement. Allowed ignition barriers by code include: 1-1/2” thick mineral fiber insulation ¼” thick wood structural panels 3/8” thick particle board ¼” thick hardboard 3/8” thick gyp board 1-1/2” thick cellulose insulation 2009 CCT/Presentation title/author

R317.3.1 - R317.3.4 Fasteners for Preservative Treated Wood
4/27/2017 Fasteners, including nuts and washers… Fasteners, including nuts and washers, for preservative-treated wood shall be of hot-dipped, zinc-coated galvanized steel, stainless steel, silicon bronze or copper. Remember the exceptions! Exceptions: One-half-inch-diameter (12.7 mm) or greater steel bolts. 2. Fasteners other than nails and timber rivets shall be permitted to be of mechanically deposited zinc-coated steel with coating weights in accordance with ASTM B 695, Class 55 minimum. 3. Plain carbon steel fasteners in SBX/DOT and zinc borate preservative-treated wood in an interior, dry environment shall be permitted. 2009 CCT/Presentation title/author

R317.4.1 Labeling Wood/plastic composite: deck boards stair treads
4/27/2017 Wood/plastic composite: deck boards stair treads handrails and guardrail systems Complies to ASTM D 7032 Allowable load Maximum span The wood / plastic components for deck boards Stair treads handrails guardrails Must be labeled or have the label on the packaging. Label must reference ASTM D7032. Denote Allowable load and maximum span. Wood / plastic composite by definition is a material mode primarily from wood or cellulose-based materials with plastic. 2009 CCT/Presentation title/author

4/27/2017 Chapter 4 Foundations 2009 CCT/Presentation title/author

R405.1 Concrete or Masonry Foundation Drains
4/27/2017 “Perforated drains shall be surrounded with an approved filter membrane (sock), or the filter membrane shall cover the washed gravel or crushed rock covering the drain. Perforated drains shall be surrounded with an approved filter membrane or the filter membrane shall cover the washed gravel or crushed rock covering the drain. Allows “sock” to encircle the perforated drain and doesn’t require a filter cloth over the crushed stone or gravel that must cover the drain at least 6 inches. Option 1 Option 2 2009 CCT/Presentation title/author

Chapter 5 Floors

R End Jointed Lumber 4/27/2017 End-jointed lumber used in an assembly required to have fire-resistance Labeled "Heat Resistant Adhesive” or "HRA” In assemblies required to have fire-resistance rating, the end-jointed lumber is required to have a heat-resistant adhesive and be labeled as having Heat Resistant Adhesive or with the letters “HRA”. When are you required to have a fire-resistance rating?: Common walls of townhouses Walls that are within 5 feet of property lines. 2009 CCT/Presentation title/author

Tables R502.3.1(1) and R502.3.1(2) Southern Pine floor joists
4/27/2017 Southern Pine floor joists Example: 16” O.C. (40 PSF) MEMBER OLD SPAN NEW SPAN 2X6 9’ – 9” 9’ – 4” 2X8 12’ – 10” 11’ -10” 2X10 16’ – 1” 14’ – 0” Joist, girder and header spans for Southern Pine have been reduced to reflect revised strength values. This was based on the fact that the lumber mills were harvesting the trees at 18 years instead of the old 26 years. Expect Hem fir and Spruce pine fir tables to be reduced also in upcoming code books. 2009 CCT/Presentation title/author

R502.6 Bearing Joist, beams, or girders Bearing on masonry or concrete
4/27/2017 Joist, beams, or girders Bearing on masonry or concrete Shall bear directly, or On nominal 2x sill plate with a minimum bearing area of 48 square inches Beams, joists and girders may bear directly on concrete or masonry foundation walls, OR If a sill plate is used on top of masonry or concrete, it has to provide at least 48 square inches of bearing Example: 2x6 plate must be at least 8” long or 2x8 plate must be at least 6” long. 8” long 6” long 2009 CCT/Presentation title/author

R506.2.3 Vapor retarder Exception # 1
4/27/2017 Vapor retarder may be omitted from all garages The vapor barrier on all garages, utility buildings or accessory structures' may be omitted. Previously it only exempted “detached garages utility building and accessory structures”. No longer required Allowed 2009 CCT/Presentation title/author

R507 Decks 2015 IRC >>2012 VA Residential Code Deck section R507
Spans for deck joists and beams reduced Virginia has made significant modifications to the section covering wood decks: Incorporated changes in the 2015 IRC into the 2012 VA Residential Code, Moved all of the random deck provisions in the code into one new section R507 New tables regarding decking span, deck post heights, deck beam size and spans, and joist spans. These new tables reflect both the wet service adjustments and the reduced spans based on recent sawn lumber strength reductions.

Chapter 6 Wall Construction

Table R602.3(1) Fastener Schedule for Structural Members
4/27/2017 Table R602.3(1) Fastener Schedule for Structural Members Table modified The fastener schedule has been modified to reflect some new fastener spacing and location requirements. Refer to your code book for specific changes. 2009 CCT/Presentation title/author

R602.7 Single Member Headers
4/27/2017 See Table for Max. Spans Single member headers are now allowed under limited loading conditions per Section , and the associated span table and construction figures (above). The purpose of this change is to provide increased energy efficiency by allowing more space for insulation. The USBC Amendment the change even further, by requiring that when Southern Pine is used for the header, it must be #1 Grade Southern Pine. 2009 CCT/Presentation title/author

4/27/2017 R King Studs King studs to each end of each header with (4)12d nails This new section requires one or more jack studs and a king stud on each end of all headers. Each king stud shall be fastened to the header with a minimum of 4-12d nails. The purpose of this is to prevent header rotation. 2009 CCT/Presentation title/author

R602.10 Classis Wall Bracing When approved by Building Official:
Second floor analysis is not required if: Second floor windows area ≤ first floor windows area One of the most significant changes in the 2012 USBC is the acknowledgement that wall bracing on the second floor can be extremely problematic. Consider that on many of today’s houses, perimeter walls do not stack from floor to floor and sometimes there are gables intersecting other gables or shed roofs. There can be situations where there are no full height wall panel – just a bunch of triangular walls. At the discretion of the building official, we will not require a second floor analysis. There are two overriding prerequisites that make this feasible, namely: The second prerequisite is that the area of the windows on the upper floor has to be less than the area of the windows on the lower level. This is not typically a problem. Many houses have the windows stack over each other. Other houses, while not necessarily stacking, the windows are shorter than the windows on the first floor. Example: the first floor might have 6’ tall windows and a 9’ ceiling. The second floor might have 5’ tall window s and an 8’ tall ceiling. We know from our experience with the classical method, that there is a 5 percent credit adjustment for each 1 foot of ceiling height difference. While this is not written in the code, we will require that the second floor has to have either the same ceiling height or a shorter ceiling height than the first floor. Why? As you can remember from the tables, the length of required bracing is less for the floors above; that is, that the required length of wall bracing is accumulative as the lateral loads are transmitted to the ground; more bracing is required on the lower floors. The sum total of these two considerations is that if you can make the first floor work with respect to wall bracing, the second floor should work by default. CHECK WITH YOUR LOCAL BUILDING OFFICIAL.

R602.12 Practical Wall Bracing
When approved by Building Official: Second floor analysis is not required if: Second floor windows area ≤ first floor windows area One of the most significant changes in the 2012 USBC is the acknowledgement that wall bracing on the second floor can be extremely problematic. Consider that on many of today’s houses, perimeter walls do not stack from floor to floor and sometimes there are gables intersecting other gables or shed roofs. There can be situations where there are no full height wall panel – just a bunch of triangular walls. At the discretion of the building official, we will not require a second floor analysis. There are two overriding prerequisites that make this feasible, namely: The second floor has to have either the same ceiling height or a shorter ceiling height than the first floor. Why? As you can see from the table, the length of required bracing is less for the floors above; that is, that the required length of wall bracing is accumulative as the lateral loads are transmitted to the ground; more bracing is required on the lower floors. The second prerequisite is that the area of the windows on the upper floor has to be less than the area of the windows on the lower level. This is not typically a problem. Many houses have the windows stack over each other. Other houses, while not necessarily stacking, the windows are shorter than the windows on the first floor. Example: the first floor might have 6’ tall windows and a 9’ ceiling. The second floor might have 5’ tall window s and an 8’ tall ceiling. We know from our experience with the classical method, that there is a 5 percent credit adjustment for each 1 foot of ceiling height difference. The sum total of these two considerations is that if you can make the first floor work with respect to wall bracing, the second floor should work by default. CHECK WITH YOUR LOCAL BUILDING OFFICIAL.

R602.12 Practical Wall Bracing
4/27/2017 R Practical Wall Bracing More than one person asked for a simplified wall bracing methodology that was more universal. One that had no prerequisites and allowed for any size of structure. This led to the development of this rewritten section. In some cases it is conservative, but it does what many have asked for. The first significant change to Section R is the name. It is no longer called “simplified wall bracing” but from here forward to be called “practical wall bracing”. Think of it as simplified wall bracing on steroids…super-simplified. The basis of this change is to make practical wall bracing applicable to all houses. This was accomplished by: Removing the prerequisites Allowing for multiple rectangles Providing prescriptive requirements on how to handle common walls Prescriptive requirement for diagonal walls Changed the tables from “bracing units” to feet and inches. Increased the size of the rectangles from 60 feet to 80 feet But be aware: this is a Virginia code change. Outside of Virginia, no one will have seen this – either in the 2012 or the 2015 IRC. “Multiple Rectangles” 2009 CCT/Presentation title/author

HABITABLE ATTIC: changed definition:
“Habitable attics greater than 2/3 of the area of the story below or over 400 sqft shall not be permitted in dwellings or townhouses that are three stories above grade plane in height.” 1st 2nd Attic 2 stories (3 “floors”) 3 stories (4 “floors”) Hab 3rd (5 “floors”) Basement above grade Basement below grade Virginia has amended the definition of “Habitable Attic” to prohibit a habitable attic in excess of: 2/3 of the story below OR 400 square feet in dwellings or townhouses that are three stories above grade plane. This restriction doesn’t apply if the dwelling or townhouse is 2 stories or less above grade plane. The reason for this is the total number of floors a fireman may have to climb in case of a fire. In northern VA, contractors were using this loophole to build 5 floor structures without sprinklers. The loophole was closed but with a lot of debate.

Habitable attic would not be allowed
12 Example 1: Second floor: 30x36 = 1080 sqft Assume 12:12 pitch hip roof 12 Hab Attic 3rd Habitable attic would not be allowed if it were either: Over 400 sqft, or Over 2/3 of 1080 sqft (720 sqft) 2nd 1st Basement below grade 5 FT 3 stories (5 “floors”) This slide is a depiction of the habitable attic limitation mentioned in the previous slide. 5 FT 5 FT ATTIC 20 x 26 = 520 sqft 30 ft Habitable attic would not be allowed 5 FT 5 FT 36 ft

Habitable attic would be allowed
12 Example 2: Second floor: 26x32 = 832 sqft Assume 8:12 pitch gable roof 8 Hab Attic 2nd Habitable attic would not be allowed if it were either: Over 400 sqft, or Over 2/3 of 832 sqft (554 sqft) 1st Basement above grade 3 stories (4 “floors”) 7.5 FT This slide is a depiction of when the habitable attic limitation doesn’t apply. ATTIC 11 x 32 = 352 sqft Habitable attic would be allowed 26 ft 7.5 FT 32 ft

Chapter 7 Wall Covering

R703.7.3.2 Masonry Veneer Lintels
4/27/2017 New table added (for option 2) providing minimum and maximum veneer heights above openings Under the 2009 code there are two prescriptive ways to size the masonry veneer header: 1 You can size the header by using a lookup table and ascertain the size of the header required, OR 2 You can use a L 5 x 3.5 x 5/16 if you meet certain requirements. The requirements were modified in the 2012 IRC to specify the minimum and maximum height of the masonry veneer. This change provides for adequate transfer of the veneer dead load to the side walls and also limits the amount of veneer allowed above the opening. The intent of the change is to prevent veneer from failing due to its own weight and inadequate support. If you cannot meet these prescriptive requirements, you will have to use option 1 lookup table or have the structure designed by an RDP. 2009 CCT/Presentation title/author

Brick Veneer Lintels – option 2
L5x3.5x5/16 header The 2009 figure stipulated the minimum 18” of side wall and the 18-3” header span. The new 2002 table provided prescriptive dimensions for the minimum and maximum height of the brick veneer. 18”min 18’-3” max

R703.7.4 Masonry Veneer Anchorage
4/27/2017 R Masonry Veneer Anchorage Table was changed to reflect revised spacing for veneer ties The table was added to make the information more user friendly than in text format. The maximum horizontal spacing of wall ties increased from 24 to 32 inches. The maximum square footage per wall tie is still 2.67 square feet. The minimum and maximum air space requirements have been combined in the same table. 2009 CCT/Presentation title/author

Roof-Ceiling Construction
Chapter 8 Roof-Ceiling Construction

Chapter 8 Span Tables – Roof-Ceiling Construction
Southern Pine values for ceiling joists and rafters changed. Like the floor joists tables, the ceiling joists and rafter span tables were significantly reduced.

R802.11 Roof Uplift Resistance
4/27/2017 Option to use nails if conditions are met Trusses and rafters shall be attached to the supporting wall assemblies with connectors capable of resisting the uplift forces. When the upward force exceeds 200# a device to restrict uplift is required. Three options for determining rafter or truss uplift: 1. Truss design drawings, A new prescriptive Table R802.11, based on Wind speed Rafter spacing Exposure rating (B or C) And roof span. Accepted Engineering Practice. If the uplift is less than 200 pounds and the rafters are spaced no more than 24 inches on center, then the rafters or trusses may be fastened with nails in accordance with the fastener table R602.3(1). The code also puts it in prescriptive terms by saying: if the basic wind speed does not exceed 90 mph, wind exposure category is B, the roof pitch is 5:12 or greater, the roof span is 32 feet or less, and rafters or trusses are not more than 24 inches on center, then the rafters or trusses may be nailed to the top plates in accordance with Table R602.3(1) The table says if you space rafters on 16” o.c. spacing, you can always nail i.a.w. Table R602.3(1) without special hurricane anchors. If your rafters or trusses are spaced at 24” o.c. you have to ascertain if you exceed 200# of uplift and if you do, you need hurricane clips. 2009 CCT/Presentation title/author

R806.5 Unvented Enclosed Rafter Assemblies
4/27/2017 R806.5 Unvented Enclosed Rafter Assemblies Allows unvented, enclosed rafter assemblies that have the ceiling applied directly to the rafters - provide no vapor barrier is applied to the attic side. You are allowed to have insulation applied directly to the underside of the roof sheathing, in between the rafters provide you comply with ALL of the code requirements. The unvented attic space is entirely within the buildig thermal envelope Where wood shingles or shakes are used, there is a ¼” vented air space between the wood shingles or shakes and the roof sheathing. A few limitations on the type of insulation is used. And the new requirement that no vapor barrier be applied to the ceiling side of the unvented enclosed rafter assembly. This is to ensure that the rafter assembly can still release any moisture it may accumulate. 2009 CCT/Presentation title/author

R806.5 Unvented Enclosed Rafter Assemblies
4/27/2017 R806.5 Unvented Enclosed Rafter Assemblies “Preformed insulation board” must be sealed around the edges of each sheet Condition #5.4 was added for unvented enclosed rafter assemblies. 5.4 Where “preformed insulation board” is used as the air-impermeable insulation layer, it shall be sealed at the edges of each sheet on the ceiling side to form a continuous layer. 2009 CCT/Presentation title/author

Chapter 9 Roof Assemblies

4/27/2017 R & R Sidewall Flashing Flashing shall divert water away from the vertical sidewall at the eave They added new language that says “a flashing shall be installed to divert water away from where the eave of a sloped roof intersects a vertical sidewall. 2009 CCT/Presentation title/author

R325 Swimming Pool and Spa Code
Reference ISPSC for codes related to pools and spas Virginia has added section R325 to the code and deleted the reference to Appendix G for Swimming Pools and Spas. The change now references the ISPSC, (the International Swimming Pool and Spa Code), which is now the referenced document for all swimming pool and spa requirements.

Chapter 11 Insulation

Table N1102.1.1 Roof insulation: R38 / R30*
Wall insulation: R15 or 13+1 Floor insulation: R19 Virginia changed the insulation value from R49 back to the same level as 2009, at R38. R15 is available from a 3.5 thickness. Many companies are now stocking it.

Virginia Residential Code N1102
R-38, or R-30 with Energy Truss This section allows for reducing the attic R-Value requirement when a raised heel (Energy) truss is used. The language was amended back to 2009 requirements in this section where R 30 can be used vs R 38 due to the ceiling R value amendment by Virginia. It is important to note that the R-30 batts must extend out over the top plate of the framed wall for proper installation and total R-Value computation. Insulation can be Reduced to R 30

Virginia Residential Code-N1102.2.4
Hinged vertical doors: R 5 Hatches covers: R38 / R30* Pull down stairs: 75% of panel must be insulated to min. R 5 rigid Virginia amended this entire section for doors, hatches and pull down stairs, when they are installed in the thermal envelope as accesses from conditioned to unconditioned space. Hinged vertical doors shall have overall insulation of R-5. Hatches and scuttle covers shall be insulated to equivalent R-Value of the surrounding area, such as an attic for example, and pull down stairs shall have at least 75% of the panel insulated to a minimum R-5 rigid.

Virginia Residential Code-N1102.4.1.2.2
Testing either by: Blower door test, or Visual option. Envelope tightness acceptable when all items in Table N are field verified. Maximum air change requirements changed from 7 Air Changes per Hour to 5 ACH. This can only be verified by an approved blower door test. The visual inspection option was removed by the 2012 IRC and IECC, however, Virginia amended this section to add this option back in. Therefore, the building envelope tightness shall be considered acceptable when the AIR BARRIER and INSULATION INSTALLATION REQUIREMENTS items listed in Table N are field verified. *Note: if a Blower Door test is accomplished, and the air changes are verified to be below 5 ACH, whole house ventilation is required in accordance with N , which sends you to section M Also note that if the visual inspection option is selected, whole house ventilation is required in accordance with sections R303.4 and M

.40 Table N1102.1.3 Solar Heat Gain Coefficient .40
2012 IRC added a requirement in Marine 4 region, for SHGC of .4

Virginia Residential Code-N1103.1.1
Programmable thermostat controlling primary heating and cooling system is required. The Energy Code uses language that the primary furnace must have a programmable thermostat. To clarify the language, Virginia has amended this section to read the primary heating and cooling system shall have a programmable thermostat.

Virginia Residential Code-N1103.2.2.1
Air handlers air leakage ≤ 2 percent Air handlers are now required to be tested and labeled separately by the manufacturer for leakage per ASHRAE This will be part of the equipment listing and only needs to be verified on the label on the equipment.

P2801.6 Water Heaters Installed in Garages
4/27/2017 Residential Code exception: Elevation of the ignition source not required for appliances listed as “flammable vapor ignition-resistant” Gas water heaters now manufactured are required to be flammable vapor ignition-resistant and not required to be elevated. IPC references IMC and IFGC.

N High Efficacy Lamps 50% of the lamps in permanently installed fixtures Or 50% of the permanently installed fixtures Either 50% of the lamps in permanently installed fixtures or 50% of the permanently installed fixtures are required to have high efficacy lamps

E3901.7 Balconies, Decks, and Porches
Receptacles for all Balconies, decks and porches Receptacle shall be located within the Balcony, deck or porch Receptacle placement to be no higher than 6 foot 6 inches The revision to this article is that now no matter how small the Balcony, deck or porch a receptacle is required. The receptacle must be installed within the confines of the balcony, deck or porch but does give the opportunity to be install up to 6 ½’ above to balcony, deck or porch.

E3902.12 Arc Fault in Dwelling Units
USBC retains arc-fault in bedrooms only The USBC modifies this section by the elimination of the Arc Fault requirement in other than Bedrooms of 1 and 2 family dwellings and townhomes.

E3608.1.2 Concrete Encased Electrode
If vapor barrier is installed under footing, then the UFER ground is not in “direct contact” The language describing what constitutes a concrete encased electrode as a grounding electrode has been revised for clarity. If you have a vapor barrier under the footing, then the UFER ground is not considered in direct contact with the ground.

Thank You A special thanks to Caleb Sulzen, Louisa County
Richard Moore, Henrico County Chuck Bajnai, Chesterfield County Art Berkley, Isle of Wight Roger Robertson, VBCA Instructor & Virginia Building Code Officials Association for their partnership. commitment of resources and time to the Jack A. Proctor Virginia Building Code Academy in developing this presentation

VIRGINIA RESIDENTIAL CODE

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