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Product Specified Strengths (MPa)Footnote (4) Footnote (5) Footnote (6)
Grade

Bending, Fb MPa (psi)

Tension Parallel to Grain FtFootnote (3) MPa (psi)

Compression Parallel to grain, Fc║ MPa (psi)

Compression Perpendicular to grain, Fc ┴ MPa (psi)

Horizontal Shear, Fv MPa (psi)

Modulus of ElasticityFootnote (7) MPa (x 106 psi)

Beam

Plank

Beam

Plank

Beam

Plank

Beam

Plank

1 400Fb-1.1E (cross-ply)

17.84Footnote (1)

(2 587)

17.84 (2 587)

12.38 (1 796)

18.71 (2 713)

8.53 (1 238)

5.66 (820)

3.20 (465)

0.784 (114)

7 580 (1.10)

6 900 (1.00)

1 650Fb-1.3E (cross-ply)

21.02Footnote (1)

(3 049)

21.02 (3 049)

12.38 (1 796)

18.71 (2 713)

8.53 (1 238)

5.66 (820)

3.20 (465)

1.79 (260)

8 960 (1.30)

7 580 (1.10)

1 750Fb-1.3E (cross-ply)

22.30 Footnote (1)

(3 234)

22.30 (3 234)

12.38 (1 796)

18.71 (2 713)

8.53 (1 238)

5.66 (820)

3.20 (465)

1.79 (260)

8 960 (1.30)

8.960 (1.30)

2 250Fb-1.5E

28.67Footnote (2)

(4 158)

28.03 (4 066)

13.93 (2 021)

25.86 (3 751)

9.41 (1 365)

5.66 (820)

3.65 (530)

1.79 (260)

10 340 (1.50)

9 650 (1.40)

2 400Fb-1.7E

30.58Footnote (2)

(4 435)

29.31 (4 250)

13.93 (2 021)

25.86 (3 751)

9.41 (1 365)

5.66 (820)

3.65 (530)

1.79 (260)

11.720 (1.70)

11 720 (1.70)

2 650Fb-1.9E

33.77Footnote (2)

(4 897)

33.13 (4 805)

16.51 (2 395)

25.86 (3 751)

9.41 (1 365)

6.90 (1 001)

3.65 (530)

1.79 (260)

13 100Footnote (8) (1.90)

12 410Footnote (8) (1.80)

2 900Fb-2.0E

36.95Footnote (2)

(5 359)

37.59 (5 452)

18.58 (2 694)

35.21 (5 107)

9.41 (1 365)

6.90 (1 001)

3.65 (530)

1.79 (260)

13 790 (2.00)

13 790 (2.00)

2 950Fb-2.0E

37.59Footnote (2)

(5 452)

37.59 (5 452)

18.58 (2 694)

35.21 (5 107)

9.41 (1 365)

6.90 (1 001)

3.72 (540)

1.79 (260)

13 790Footnote (8) (2.00)

13 790Footnote (8) (2.00)

3 100Fb-2.1E

39.50Footnote (2)

(5 729)

39.50 (5 729)

18.58 (2 694)

35.21 (5 107)

9.41 (1 365)

6.90 (1 001)

3.72 (540)

1.79 (260)

14 480 (2.10)

13 790 (2.00)

3 100Fb-2.2E

39.50Footnote (2)

(5 729)

37.59 (5 452)

18.58 (2 694)

35.21 (5 107)

9.41 (1 365)

6.90 (1 001)

3.72 (540)

1.79 (260)

15 170 (2.20)

15 170 (2.20)

Equivalent Specific Gravity for the Product Fastener DesignFootnote (1) Footnote (2)
Grade

Equivalent Specific Gravity

Nails

Bolts and Lag Screws Installed in FaceFootnote (3)

Withdrawal Load

Lateral Load

Lateral Load

Installed in Edge

Installed in Face

Installed in Edge

Installed in Face

Load Applied ║to Grain

Load Applied  ┴ to Grain

1400Fb-1.1E (cross-ply)

0.42

0.48

0.49

0.50

0.41

0.48

1750Fb-1.3E (cross-ply); 2250Fb-1.5E & better

0.46

0.50

0.50

0.50

0.46

0.50

Product Nail Spacing RequirementsFootnote (1)

Thickness (mm (in.))

Orientation

FastenerFootnote (2)

Minimum End Distance (mm (in.))

Closest On-Centre Spacing (mm (in))

Single Row

Multiple RowsFootnote (6) Footnote (7)

 < 38 (< 1 ½)

EdgeFootnote (3) Footnote (4)

64 mm (8d 2 ½ in)

64 (2 ½)

102 (4)

N/A

76 mm (10d 3 in) & 83 mm (12d 3 ¼ in)

64 (2 ½)

102 (4)

N/A

89 mm (16d 3 ½ in)

89 (3 ½)

127 (5)

N/A

< 38 (< 1 ½)

FaceFootnote (5)

64 mm (8d 2 ½ in)

38 (1 ½)

76 (3)

76 (3)

76 mm (10d 3 in) & 83 mm (12d 3 ¼ in)

38 (1 ½)

76 (3)

76 (3)

89 mm (16d 3 ½ in)

38 (1 ½)

127 (5)

127 (5)

≥ 38 (≥ 1 ½)

EdgeFootnote (3) Footnote (4)

64 mm (8d 2 ½ in)

64 (2 ½)

76 (3)

102Footnote (8) (4Footnote (8))

76 mm (10d 3 in) & 83 mm (12d 3 ¼ in)

64 (2 ½)

102 (4)

127Footnote (8) (5Footnote (8))

89 mm (16d 3 ½ in)

89 (3 ½)

127 (5)

152Footnote (8) Footnote (9) (6Footnote (8) Footnote (9))

≥ 38 (≥ 1 ½)

FaceFootnote (5)

64 mm (8d 2 ½ in)

38 (1 ½)

76 (3)

76 (3)

76 mm (10d 3 in) & 83 mm (12d 3 ¼ in)

38 (1 ½)

76 (3)

76 (3)

89 mm (16d 3 ½ in)

38 (1 ½)

127 (5)

127 (5)

Product Factored Resistances for Rim BoardFootnote (1) Footnote (2) Footnote (3) Footnote (6)

Minimum Thickness (mm (in.))

Grade

Depth (mm (in.))

Vertical Load

Horizontal Lateral Load Transfer CapacityFootnote (4) (kN/m (lbs/ft.))

Lateral Resistance of 13-mm (1/2-in) Lag ScrewFootnote (5) (Installed in Face) (kN (lbs))

Uniform (kN/m (lbs/ft.))

Concentrated Load (kN (lbs))

32 (1 ¼)

1400Fb-1.1E (cross-ply)

≤ 406 (≤ 16)

195 (13 344)

31.2 (7 022)

4.76 (326)

3.34 (751)

≤ 610 (≤ 24)

123 (8 457)

31.2 (7 022)

4.76 (326)

3.34 (751)

32 (1 ¼)

1750Fb-1.3E (cross-ply)

≤ 406 (≤ 16)

204 (13 970)

31.2 (7 022)

4.76 (326)

3.34 (751)

≤ 610 (≤ 24)

123 (8 457)

31.2 (7 022)

4.76 (326)

3.34 (751)

38 (1 ½)

2250Fb-1.5E and better

≤ 406 (≤ 16)

97 (6 650)

20.0 (4 500)

4.76 (326)

3.34 (751)

≤ 610 (≤ 24)

60.6 (4 150)

20.0 (4 500)

4.76 (326)

3.34 (751)

44 (1 ¾)

2250Fb-1.5E and better

≤ 406 (≤ 16)

108 (7 400)

23.8 (5 350)

4.76 (326)

3.34 (751)

≤ 610 (≤ 24)

83.9 (5 750)

23.8 (5 350)

4.76 (326)

3.34 (751)