Old Business None New Business New Appendix M-Deck Code

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1 Building Consistency Meeting Residential Date: 4/2/2008 Recorder and minutes prepared by: Danny Wooten/Jeff Griffin Staff present: Danny Wooten, George Rogers, Steve Kellen, David Williams, Ron Dishman, Harold Sinclair, Walt Nash, Michaels Johnson, Ken Turill, Tony Kiser, Eric Brown, Jeff Vernon, Jacob Gregory, Paul Cupp, Andrew DeMaury. Public present: Chris Newton/Hans Kasak/Harold Ingram (Ryland Homes), Daniel McBride (Cunnane Group), Michael Skinner (M/I Homes), Kent Bublitz (Royce Builders); Justin Kies/Jeff Dotson (Eastwood Homes); Lou Salvador (DR Horton); Chad Hughes (Barefoot and Co); Jim Brodnik (Mattamy Homes); Rod Spence/Ken Smith (Banister Homes); Roger Johnston/Will Reeves/Jason Leep (Wynsor Homes); Jason Whitener (Dienst Custom Homes); Johnny Webster (Calloway Homes); Brad Crysler/Paul Boucher (John Wieland); Wayne Carter (Evergreen Homebuilders); Terry Cleary (Meeting Street Homes); Tony Hobart (Hobart Smith Homes); Bob Mckee (Ryan Homes); Scott Dellinger (Drafting & Design); Gene Harris/Tommy Crowell (Saussy Burbank); Jason Horten (Parksite); Dave Reynolds (Bldrs 1 st Source); Tony Whitehead/Adam Danneman (McCar Homes); Jason Whitener/Ted Thompson (Dienst Custom Homes); Chad Ritter (PE); Chris Branham (KB Homes); Randall Feinster (Structura Construction). Topics/Subject Old Business None New Business New Appendix M-Deck Code Townhouse anchorage Decisions/Conclusions/Actions Handout of work that has been done related to a new appendix M was passed out, this was a draft version and final version will be distributed at the next meeting. Final version has been sent to the North Carolina Building Code Council on April 17 th for their consideration at the June BCC meeting. There is a significant code change for townhouse anchors on both the exterior walls and on interior bearing walls requiring a larger bolt washer per R , which states a ¼ 3x3 plate washer is required everywhere a bolt is installed on townhouses. One product that has been present to staff and is approved for this application is the Simpson BPS slotted washer. The slotted washer gives the ability to align the washer in a 2x4 wall cavity when bolt is not centered on mudsill plate. When using the slotted washer a standard fender washer is also required. The other issue has to do with the additional bolting requirement on all interior bearing walls in a townhouse. The titen bolt made by Simpson was present as an option for this interior application which can be installed after the fact (can also be used on exterior walls into solid CMU or slabs per mfg details). This product can be installed on interior walls after the structure is built it uses no epoxy and can be drilled and installed with equavilent holding power as the standard code J bolt (same spacing 12 off corner and 6 on center-see attached

2 information). The Titan bolt can also be used on single family dwellings where a bolt was forgotten with the BPS washer. Other products are available but this has been submitted to the Department and has been approved for installation. Anchor straps in Brick installation Double TJI side load application Anchor straps are not specifically approved by Code for installation in brick application. Section R only list an exception for anchor straps that states spaced as required to provide equivalent anchorage to ½-inch-diameter anchor bolts. This information would have to come from the Manufacturers testing data specific to the end use construction utilized. If the Manufacturer has not tested in this a brick application strap cannot be used for that application. Issue brought up about the side load transfer through multiple I-joist application. Several field application with improper application of the side loading of a I-joist have been noted recently. All manufacturers will require some type of blocking/filler to be used and they will provide that detail. Application detail must be followed without filler blocking application cannot be approved. Free standing fireplaces Superior foundation walls Details vary please check with your manufacturer for correct filler and nailing pattern requirements. Question asked about any requirements for free standing fireplaces not attached to a structure and if they need permits? A detached free standing fireplace & chimney is exempt from the requirements of the NC residential code per section R101.2 scope and Chapter 2 definition of an accessory structure. No permit or inspections are required. Issue has come up in regards to the requirement to waterproofing these walls. According to section R406.2 any basement foundation wall in the State of North Carolina that encloses habitable/usable space must be waterproofed. So any basement using this type of foundation system must have waterproofing applied all the way up to finished grade level, if it s just a crawl space application then dampproofing may be required per section R406.1.

3 2x4 exterior handrails Waterproofing vs. dampproofing Kitchen Island clearances Secondary barriers behind exterior wall coverings Still monitoring this issue of getting the option for exterior application written back into the code for a 2x4 handrail, currently not allowed. This has been approved by the Building Code Council but has not made it through the final Rules review committee and cannot be used until it completes the entire process. Will advise as soon as exception is available for usage. Language has changed slightly in the NC2006 Code to indicate when dampproofing vs. waterproofing is required. Under section R406.2 waterproofing is only required on basement walls, under section R406.1 dampproofing is required on crawl space walls when outside grade is higher than interior by 12 inches. Question asked about clearances around a kitchen island and if it needs to have the same as hallway clearance required under section R311.3 to be 36. There is currently no requirement for kitchen island clearance and this is not regulated by the Residential code. Secondary barriers will be required under the new Code coming January 1 st All homes will have to have either felt paper or some type of an approved house wrap underneath the exterior cladding material.

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