Going Beyond Advance Framing! Joining Forces for Tomorrows Construction Practices

1. Going Beyond Advance Framing!Joining Forces for Tomorrows Construction Practices BUILDERS ASSOCIATION Presented By: Paul G Johnson P.E.

2. A SPECIAL THANKSTO OUR SPONSORS • Truss Manufacturers of Texas (TMAT) • MiTek Industries • Intelligent Building Systems (ITW) • Eagle Metal • Simpson Strong Tie

3. Why Go Beyond Advance Framing? Both the builders and home owners can benefit from advance or new framing techniques. The proposal are structurally sound and come at a lower cost of materials and labor while increasing the R-value of the structure. “Fully implementing advance framing techniques can result in materials cost savings of about $500 or $1000 (for a 1,200- and 2,400 sq-ft house respectively), labor savings of between 3 and 5 percent and annual heating and cooling savings of up to 5 percent” (Department of Energy, United States of America, Technical Fact Sheet)

4. Goal of this Meeting • Present code accepted framing practices which will meet tomorrows energy efficiency requirements. • Provide and open forum for all parties to voice their ideas and concerns. • Develop friendships among all trades of construction; WE ARE IN THIS TOGETHER!

5. Welcome to Chapter 11 Residential Law - January 1, 2012

6. Where is the Benefit Found? Check out “EnergyCodes.Gov” Look for: “REScheck” Softpedia-static

7. Discussion Items • Roof Framing • Wall Framing • Floor Framing • Miscellaneous Framing Ideas • Green Building Topics • Things to Think About

8. Roof Framing • Raised heel conditions for required insulation • Minimal bearing walls • Attic usage • HVAC • Conditioned Duct Chase • Room • Water Heaters • Cantilever conditions to eliminate beams and headers • Gable trusses as structural to eliminate headers • 8’ O.C. roof trusses to minimize bearing requirements

9. ROOF FRAMINGNew Energy Requirement: R30 • Insulation Requirements at the roof and exterior wall connection for Texas. Non-compacted R30 Pink Fiberglass Batts= 9 ½” Blown Fiberglass=12 ¼” Cellulose 8 3/8” Truss Detail Conventional Frame Detail Courtesy of Eagle Metal

10. Conventional Framing • Pros • Better insulation values • Cons • 2x6 standard rafter on walls no longer works. • Not all built up system are covered by code nailing. “Horizontal Thrust” issues. Engineering may be required. • Lateral support (IRC R802.8) required which exceed 5 to 1 ratio. • Additional exterior material; brick or siding required. • Additional Cost of Framing and material Raised Rafter Framing Pitch=6/12 2x6 Rafter Height= 10 1/8” 2x10 or 2x12 Rafter With Raised Ceiling Courtesy of Eagle Metal

11. Component Framing • Pros • Better insulation values • Directly built into components • Horizontal Thrust Accounted for. • Cons • Additional cost • Additional exterior material; brick or siding required. Raised Common Heel with Slider Raised Sloped Ceiling Component Courtesy of Eagle Metal

12. Roof and Ceiling Framing Use an absolute minimal number of bearing walls and eliminate headers. Clear Span All Walls With Components Conventional Frame With Minimal Bearing Courtesy of Eagle Metal

13. Header Requirements IRC Can a portion of a wall be considered bearing while the remainder portion is non-bearing? Is a braced wall line a bearing wall?

14. Roof Framing • Utilize Attic Space • HVAC Location • Conditioned Duct Chase • Additional Rooms • Water heater location

15. Roof Framing HVAC in Attic Condition Space or Not Conditioned? Courtesy of Mitek

16. Roof Framing HVAC & Duct Chase in Attic Conditioned Chase in the Attic or Below the Attic? Courtesy of Mitek

17. Roof FramingUse of Attic for Additional Living Space Inverted Valley Truss Forms Wall Why Waste the Attic Space? Courtesy of Mitek

18. Roof FramingCode Living Space Requirements Building Code Basics: Residential; Stephen A Van Note

19. Roof FramingUse Attic to hold Water Heaters Courtesy of Mitek

20. Roof FramingPro-Cons of Attic Space Usage • Utilize wasted space for mechanical or living area. Go GREEN • Centralize mechanical and water to minimize run lengths. GO GREEN • Conditioned Duct chase may reduce unit size and cost. Go GREEN • Solar water heating system in close proximity of the storage unit. GO GREEN

21. Roof FramingConsider Eliminating Wall Headers

22. Roof FramingConsider using Trusses or Framing in Cantilever Conditions

23. Roof FramingConsider Cantilevering your design to eliminate beams • Consider using common sense • Not all cantilevers will eliminate beams

24. Some of the ideas but not all of them Attic Area Added Missed using Gable for load transfer Cantilever Roof

25. Roof FramingPro-Cons of Minimal Bearing • Using interior walls as bearing and cantilevering over exterior walls allows for more insulation • Cantilever over porch eliminates beams • Interior wall may contain headers but they will not need insulation • Careful; To long of cantilever could cause deflection concerns (long term creep factor) • Existing gable roofs sections should be utilized as headers. • How does wind analysis play into this concept???

26. Roof FramingStretching Typical Framing Can we apply Commercial Framing to Residential Framing?

27. Roof FramingStretching Typical Framing Courtesy of Mitek

28. Roof Framing Re-Cap • Raised heel conditions are the future. • Utilize the wasted area in the attic for either mechanical equipment or additional living area. • Model your roof around advance framing techniques. • Integrate your roof and ceiling design with your bearing and non bearing walls. • Expand your standard conception of how a roof should be framed.

29. Wall Framing • Corners and TEE’s • Stacked Framing • 24” o.c. stud spacing • Single top plate bearing walls • Load Path development • New Age Headers / Old Age Framing • Box Headers • LVL short or single ply • Single ply conventional • Component • Bracing Solutions • Moment Frame • Plated Wall

30. Wall FramingCorners and TEE’s Slide 23B IRC 2009 Fig R602.3(2) Insulation, Insulation, Insulation Currently code approved Easy to insulate Drywall clips may be required No more freezing pipes Slide 23A

31. Wall Framing24” O.C. Stud Design • Interior non load bearing at 24” is acceptable down to a 2x3 • 2x4 Exterior is acceptable at 24” if supporting a Roof OR Floor system separately.

32. Wall Framing2+ Story with 24” O.C. Stud Design A habitable attic could be added for spans up to 32’0” Wall supports roof only Wall supports one set of floors Courtesy of Mitek

33. Wall FramingSingle Top Plate design • Section R602.3.2. Allows for a Single Top Plate for bearing walls under the “Exception” rule

34. Wall FramingSingle Top Plate design • Section R602.5 States that interior non-load bearing walls shall contain at least a single top plate.

35. FootnoteBack Pocket Info • Previous exception referenced fire blocking per section R602 which sends you to R302.11 and allows Batts or blankets of mineral or glass fiber to be used as fire stopping.

36. Remember your tall wall fire blocking. In this case the first story must be 2x6 studs at 24” o.c. or 2x4” at 16” o.c. Single top plates used when the rafters, joist or components are centered with the studs or within 1” Wall FramingSingle top plate design Courtesy of Mitek

37. Wall Framing HeadersBox Headers IRC 2009 Code

38. Wall FramingEngineered Wood Products LVL 3 ½” x 4” header Single Ply LVL Header

39. Wall FramingConventional Material Single 2x header with flat 2x

40. Wall FramingComponent Header Loose 4x2 Header or Built up Window Component

41. Wall FramingHeader Clips Simpson HH Header Clip Taken from Department of Energy, Technical Fact Sheet

42. Wall FramingSingle Stud Usage Around Openings • Code Section R602.3: Defines studs as being continuous from sole plate to a support at the top, with the exception of jack studs, trimmers studs and cripple studs at openings that comply with R502.5(1) & (2)

43. Wall FramingSingle Stud with Header Clip (cont) Table reflects the acceptable practices of using a single stud with a header clip, without any additional calculations.

44. Wall FramingNarrow Wall Bracing Narrow wall bracing issues are not only for garages. Window framing may require such details which limit insulation.

45. Wall FramingBracing Solutions Courtesy of Universal Forest Products

46. Wall FramingEntire Wall as Plated Component? With plated walls wind connections could be incorporated

47. Wall Framing Re-Cap • Think insulation, insulation, and more insulation • Look at your T’s and Corners • Look for more cost effective headers with a payback in energy savings as well • How much wood fiber can you remove?? • Consider your window location along with a 24” stud layout. • Make room for bracing at the corners

48. Floor Framing • Rim Board load capacities • EWP • Conventional • Girder Floor Truss • Girder Knee-Wall • Top chord bearing truss • Cantilever porches

49. Floor FramingCode Acceptance of Floor Space Support Figure R502.2 IRC 2009 For write up refer to section R502.6-7

50. Floor FramingRim Board or Header? EWP rim board with no header below Why Not Both