<strong>ASD</strong> WOOD STRUCTURAL PANELS SUPPLEMENTSP-13Table 3.1.1Adjustments to Flexural Design Capacities Based on Panel Gradeand Construction, C GabPanel Bending Stiffness, EIParallel to Strength Axis aStress AppliedPerpendicular to Strength Axis aOther Structural I Other Structural IRated Panels3-Ply Plywood 1.1 1.1 1.0 1.54-Ply Plywood, COM-PLY 1.1 1.1 2.2 3.35-Ply Plywood b 1.1 1.1 3.1 5.2OSB 1.0 1.0 3.1 5.2Sanded PlywoodA-A, A-C 1.0 1.0 1.0 1.4Marine 1.0 1.0 1.4 1.4Other 1.0 1.0 1.0 1.4Panel Bending Strength, F bSRated Panels3-Ply Plywood 1.0 1.0 1.0 1.34-Ply Plywood 1.1 1.1 1.2 1.7COM-PLY 1.2 1.2 1.2 1.75-Ply Plywood b , OSB 1.2 1.2 1.8 2.8Sanded PlywoodA-A, A-C 1.2 1.3 1.2 1.7Marine 1.1 1.1 1.4 1.4Other 1.0 1.1 1.0 1.4The strength axis is the long panel dimension unless otherwise identified.Adjustments apply to plywood with 5 or more layers; for 5-ply/3-layer plywood, use adjustments for 4-ply.3DESIGN CAPACITIESAPA – The Engineered <strong>Wood</strong> Association
SP-14DESIGN CAPACITIESTable 3.2Panel Dry Design Axial Stiffness, Tension, and CompressionCapacitiesSpan RatingAxial Stiffness, EA (lb./ft. width) Tension, F tA (lb./ft. width) Compression, F cA (lb./ft. width)Stress Applied Stress Applied Stress Applied Stress Applied Stress Applied Stress AppliedParallel Perpendicular Parallel Perpendicular Parallel PerpendicularStrength Axis a Strength Axis a Strength Axis a Strength Axis a Strength Axis a Strength Axis aSheathing24/0 3,350,000 2,900,000 2,300 600 2,850 2,50024/16 3,800,000 2,900,000 2,600 990 3,250 2,50032/16 4,150,000 3,600,000 2,800 1,250 3,550 3,10040/20 5,000,000 4,500,000 2,900 1,600 4,200 4,00048/24 5,850,000 5,000,000 b 4,000 1,950 5,000 4,800 bSpan RatingSingle Floor16 oc 4,500,000 4,200,000 2,600 1,450 4,000 3,60020 oc 5,000,000 4,500,000 2,900 1,600 4,200 4,00024 oc 5,850,000 5,000,000 b 3,350 1,950 5,000 4,800 b32 oc 7,500,000 7,300,000 c 4,000 2,500 6,300 6,20048 oc 8,200,000 7,300,000 5,600 3,650 8,100 6,750NominalThicknessSanded Plywood1/4 1,800,000 625,000 1,650 550 1,550 55011/32 1,800,000 750,000 1,650 700 1,550 6503/8 2,350,000 1,150,000 2,150 1,050 2,000 95015/32 3,500,000 2,150,000 3,200 2,000 3,000 1,8501/2 3,500,000 2,250,000 3,200 2,050 3,000 1,90019/32 4,350,000 2,500,000 4,000 2,300 3,750 2,1505/8 4,450,000 2,750,000 4,100 2,500 3,800 2,35023/32 5,100,000 3,150,000 4,650 2,850 4,350 2,6503/4 5,200,000 3,750,000 4,750 3,450 4,450 3,2007/8 5,300,000 4,750,000 4,850 4,350 4,550 4,1001 6,700,000 5,700,000 6,150 5,200 5,750 4,8501-1/8 6,950,000 5,700,000 6,350 5,250 5,950 4,900aThe strength axis is the long panel dimension unless otherwise identified.bCapacity shall be adjusted for OSB by multiplying by 0.9.cCapacity shall be adjusted for OSB by multiplying by 0.8.APA – The Engineered <strong>Wood</strong> Association