SUPPLY CENTRAL RETURN WALL 1 TW3046 TW3046 TW3046 TW3046 3068 UP SUPPLY TW3046 TW3046 16Õ-2Ó * 19Õ-2Ó * 16Ó 16Ó 16Ó 16Ó Joseph Lstiburek, Ph.D., P.Eng Building Science Advanced Framing Use Less Stuff Better Advanced Framing www.buildingscience.com 2007 Joseph Lstiburek Wood 2 Design Issues 2 strips of plywood 4 feet wide and 1 strip 2 feet wide Design buildings that coordinate advanced framing practices with material availability and integrate with building envelope design and mechanical system layout 24-inch grid 4Õ 4Õ 4Õ 4Õ 4Õ 4Õ 4Õ 2Õ-10Ó 9Õ-7Ó Plywood soffit 2Ó vent strip 4Õ 8Õ Cut plywood sheet into equal strips for soffit assembly. Paint/ seal upper and lower surfaces of soffit as well as edges. * The 2" dimension comes from assuming that 1" thick insulation sheathing is installed over framing. 2007 Joseph Lstiburek Wood 3 2007 Joseph Lstiburek Wood 4 Advanced Framing System Design Issues 42" x 42" WALL 4 Stack Framing Concept No headers in non-bearing wall Single stud at rough opening No cripples under window opening Two stud corners Roof framing/trusses line up with wall and floor framing Single top plate Single top plate Point load transferred between studs by rim closure material acting as header. If rim closure material is nonstructural, support will be required under point loads. Use Insulated solid blocking header between joists. Header hangers instead of jack studs (see Figure 5.5) Provide drawings that integrate advanced framing into complete building envelope design and mechanical system layout SUPPLY WALL 2 WALL 3 TW3046 TW3046 TW3046 2007 Joseph Lstiburek Wood 5 2007 Joseph Lstiburek Wood 6 2008 buildingscience.com 1 of 20
2007 Joseph Lstiburek Wood 7 2007 Joseph Lstiburek Wood 8 2007 Joseph Lstiburek Wood 9 2007 Joseph Lstiburek Wood 10 2007 Joseph Lstiburek Wood 11 2007 Joseph Lstiburek Wood 12 2008 buildingscience.com 2 of 20
Advanced Framing System 2 Stud Corners Corner framing Connector plate Single top plate Two stud corner Clip support for gypsum board Alternative 1x4 support for gypsum board Top plate splice Connector plate Single top plate 2007 Joseph Lstiburek Wood 13 2007 Joseph Lstiburek Wood 14 Advanced Framing System Advanced Framing System Insulated headers No header necessary at non-bearing walls Drywall clips allow for better installation with less drywall cracking 2007 Joseph Lstiburek Wood 15 2007 Joseph Lstiburek Wood 16 Advanced Framing System Drywall clips at corner and intersecting wall 2007 Joseph Lstiburek Wood 17 2007 Joseph Lstiburek Wood 18 2008 buildingscience.com 3 of 20
2007 Joseph Lstiburek Wood 19 2007 Joseph Lstiburek Wood 20 2007 Joseph Lstiburek Wood 21 2007 Joseph Lstiburek Wood 22 2007 Joseph Lstiburek Wood 23 2007 Joseph Lstiburek Wood 24 2008 buildingscience.com 4 of 20
2007 Joseph Lstiburek Wood 25 2007 Joseph Lstiburek Wood 26 2007 Joseph Lstiburek Wood 27 2007 Joseph Lstiburek Wood 28 2007 Joseph Lstiburek Wood 29 2007 Joseph Lstiburek Wood 30 2008 buildingscience.com 5 of 20
2007 Joseph Lstiburek Wood 31 2007 Joseph Lstiburek Wood 32 2007 Joseph Lstiburek Wood 33 2007 Joseph Lstiburek Wood 34 2007 Joseph Lstiburek Wood 35 2007 Joseph Lstiburek Wood 36 2008 buildingscience.com 6 of 20
2007 Joseph Lstiburek Wood 37 2007 Joseph Lstiburek Wood 38 2007 Joseph Lstiburek Wood 39 2007 Joseph Lstiburek Wood 40 2007 Joseph Lstiburek Wood 41 2007 Joseph Lstiburek Wood 42 2008 buildingscience.com 7 of 20
2007 Joseph Lstiburek Wood 43 2007 Joseph Lstiburek Wood 44 2007 Joseph Lstiburek Wood 45 2007 Joseph Lstiburek Wood 46 2007 Joseph Lstiburek Wood 47 2007 Joseph Lstiburek Wood 48 2008 buildingscience.com 8 of 20
2007 Joseph Lstiburek Wood 49 2007 Joseph Lstiburek Wood 50 2007 Joseph Lstiburek Wood 51 2007 Joseph Lstiburek Wood 52 2007 Joseph Lstiburek Wood 53 2007 Joseph Lstiburek Wood 54 2008 buildingscience.com 9 of 20
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CASE STUDY HOUSE SPECIFICATIONS Conditioned Floor Area 2,495 sq ft Total Floor Area 2,910 sq ft Typical Wall Height 9-11 _ Total Conditioned Volume 24,850cu ft Length of Exterior Wall 252 ln ft Length of Interior Wall 340 ln ft CASE STUDY 2x4 16 oc WALL 8 Studs Bd Ft Cost Ext Wall 467 1634 bd ft $ 866 Ext Plate 95 331 bd ft $ 175 Int Wall 715 2502 bd ft $1326 Int Plate 126 446 bd ft $ 237 Header 273 bd ft $ 145 TOTAL WALL FRAME COST $2749 2007 Joseph Lstiburek Wood 61 2007 Joseph Lstiburek Wood 62 CASE STUDY 2x6 24 oc ADVANCED FRAME WALL 8 Studs Bd Ft Cost Ext Wall 238 1312 bd ft $695 Ext Plate 63 347 bd ft $183 Int Wall 279 977 bd ft $518 Int Plate 85 298 bd ft $158 Header 148 bd ft $78 TOTAL WALL FRAME COST $1632 CASE STUDY WOOD FRAME WALL SUMMARY 2x4 2x6 REDUCED BY 8 Studs 1403 665 (-738 / -52%) Bd Ft 5186 3082 (-2104 / -40%) COST $2749 $1632 (-$1117 / -40%) 2007 Joseph Lstiburek Wood 63 2007 Joseph Lstiburek Wood 64 Shear Panel 2007 Joseph Lstiburek Wood 65 2007 Joseph Lstiburek Wood 66 2008 buildingscience.com 11 of 20
Shear Panel Seismic Testing Work with CERL (the US Army research laboratory), and BSC to facilitating code approval of advanced framing techniques by the Division of the State Architect in California, and other earthquake and high wind loading locations. Full scale assemblies have been tested under the new dynamic seismic loading protocols developed after the Northridge earthquake. New non-proprietary shear panels are now available for use that allow for advanced envelope design 2007 Joseph Lstiburek Wood 67 2007 Joseph Lstiburek Wood 68 2007 Joseph Lstiburek Wood 69 2007 Joseph Lstiburek Wood 70 2 Story Aligned 2x4 panel with plywood to establish baselines Standard Plywood Panel 2007 Joseph Lstiburek Wood 71 2007 Joseph Lstiburek Wood 72 2008 buildingscience.com 12 of 20
Standard Plywood Panel Performance Standard OSB Panel Lateral Force (lb) Lateral Force (lbs) 4000 3000 2000 1000 0-1000 -2000-3000 -4000-4 -3-2 -1 0 1 2 3 4 Disp lacement (inch es) Total Shear Force, TSF Bilinear Force, BLF + Backbone - Backbone Predicted 2007 Joseph Lstiburek Wood 73 2007 Joseph Lstiburek Wood 74 Lateral Force Lateral (lbs) Force (lb) Standard OSB Panel Performance 2500 2000 1500 1000 500 0-500 -1000-1500 -2000-2500 -3000-7 -6-5 -4-3 -2-1 0 1 2 3 4 5 6 7 Disp lacement (inch es) Total Shear Force, TSF Bilinear Force, BLF + Backbone - Backbone Predicted 2007 Joseph Lstiburek Wood 75 2007 Joseph Lstiburek Wood 76 Diagonal Strap Shear Panel CURe1 2007 Joseph Lstiburek Wood 77 2007 Joseph Lstiburek Wood 78 2008 buildingscience.com 13 of 20
Diagonal Strap Shear Panel CURe1 Lateral Force (lb) Lateral Force (lbs) 2000 1500 1000 500 0-500 -1000-1500 -2000-10 -8-6 -4-2 0 2 4 6 8 10 Displacement (inches) Total Shear Force, TSF Bilinear Force, BLF + Backbone - Backbone Predicted 2007 Joseph Lstiburek Wood 79 2007 Joseph Lstiburek Wood 80 2007 Joseph Lstiburek Wood 81 2007 Joseph Lstiburek Wood 82 2007 Joseph Lstiburek Wood 83 2007 Joseph Lstiburek Wood 84 2008 buildingscience.com 14 of 20
2007 Joseph Lstiburek Wood 85 2007 Joseph Lstiburek Wood 86 2007 Joseph Lstiburek Wood 87 2007 Joseph Lstiburek Wood 88 2007 Joseph Lstiburek Wood 89 2007 Joseph Lstiburek Wood 90 2008 buildingscience.com 15 of 20
2007 Joseph Lstiburek Wood 91 2007 Joseph Lstiburek Wood 92 2007 Joseph Lstiburek Wood 93 2007 Joseph Lstiburek Wood 94 2007 Joseph Lstiburek Wood 95 2007 Joseph Lstiburek Wood 96 2008 buildingscience.com 16 of 20
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