5/8″ Bolt or dowelDouble Shear, Northern lumber

Selection Tables

	5/8″ Bolt or dowel Double Shear, Northern lumber
Wood Member	Fastener
Thickness (mm)	Main member depth (mm) d₂	No. of rows
89	89	89	89	89	184	184	235	286	286	235	286


1	2	3

Side, t₁	Main, t₂	79	95	127	159	190	64	95	127	159	190	64	95	127	159	190
38	38		89	1	0	3.29(R)	3.95(R)	5.27(R)	6.25(a)	6.25(a)	5.27(R)	7.90(R)	10.5(R)	12.5(a)	12.5(a)	7.90(R)	11.9(R)
38	38		184	2	48	6.46(G)	7.12(G) 6.57	8.44(G) 6.57	9.75(G) 6.57	11.1(G) 6.57	8.44(G)	11.1(G)	13.7(G)	16.3(G) 15.5	19.0(G) 15.5	11.1(G)	15.0(G)
38	38		184	2	79	6.59(R) 6.57	7.90(R) 6.57	10.5(R) 6.57	11.6(S) 6.57	11.6(S) 6.57	10.5(R)	14.4(G) 11.4	17.1(G) 13.8	19.7(G) 15.5	22.4(G) 15.5	14.4(G) 13.8	18.4(G) 15.5
38	38		235	2	111	6.59(R) 6.57	7.90(R) 6.57	10.5(R) 6.57	11.6(S) 6.57	11.6(S) 6.57	10.5(R)	15.8(R) 11.4	20.5(G) 13.8	23.1(G) 15.5	25.0(a) 15.5	15.8(R) 13.8	21.8(G) 15.5
38	38		235	3	48	9.62(G) 6.57	10.3(G) 6.57	11.6(G) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(G) 11.4	14.2(G) 11.4	16.9(G) 13.8	19.5(G) 15.5	22.1(G) 15.5	14.2(G) 13.8	18.2(G) 15.5
38	38		286	3	79	9.88(R) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	15.8(R) 11.4	21.0(G) 11.4	23.6(G) 13.8	26.3(G) 15.5	28.9(G) 15.5	21.0(G) 13.8	24.9(G) 15.5
38	89		89	1	0	6.25(a)	6.25(a)	6.25(a)	6.25(a)	6.25(a)	12.3(R) 11.4	12.5(a) 11.4	12.5(a)	12.5(a)	12.5(a)	18.5(R) 13.8	18.8(a) 15.5
38	89		184	2	48	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	19.8(G) 11.4	25.0(a) 11.4	25.0(a) 13.8	25.0(a) 15.5	25.0(a) 15.5	25.9(G) 13.8	35.2(G) 15.5
38	89		184	2	79	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	24.7(R) 11.4	25.0(a) 11.4	25.0(a) 13.8	25.0(a) 15.5	25.0(a) 15.5	33.8(G) 13.8	37.5(a) 15.5
38	89		235	2	111	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	24.7(R) 11.4	25.0(a) 11.4	25.0(a) 13.8	25.0(a) 15.5	25.0(a) 15.5	34.0(S) 13.8	37.5(a) 15.5
38	89		235	3	48	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	26.2(S) 11.4	26.2(S) 11.4	34.0(S) 13.8	37.5(a) 15.5	37.5(a) 15.5	33.3(G) 13.8	41.8(S) 15.5
38	89		286	3	79	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	26.2(S) 11.4	26.2(S) 11.4	34.0(S) 13.8	37.5(a) 15.5	37.5(a) 15.5	34.0(S) 13.8	41.8(S) 15.5
38	140		140	1	0	6.25(a)	6.25(a)	6.25(a)	6.25(a)	6.25(a)	12.5(a) 11.4	12.5(a) 11.4	12.5(a)	12.5(a)	12.5(a)	18.8(a) 13.8	18.8(a) 15.5
38	140		191	2	48	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	22.2(G) 11.4	25.0(a) 11.4	25.0(a) 13.8	25.0(a) 15.5	25.0(a) 15.5	29.7(G) 13.8	37.5(a) 15.5
38	140		191	2	79	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	25.0(a) 11.4	25.0(a) 11.4	25.0(a) 13.8	25.0(a) 15.5	25.0(a) 15.5	34.0(S) 13.8	37.5(a) 15.5
38	140		241	2	111	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	25.0(a) 11.4	25.0(a) 11.4	25.0(a) 13.8	25.0(a) 15.5	25.0(a) 15.5	34.0(S) 13.8	37.5(a) 15.5
38	140		241	3	48	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	26.2(S) 11.4	26.2(S) 11.4	34.0(S) 13.8	37.5(a) 15.5	37.5(a) 15.5	34.0(S) 13.8	41.8(S) 15.5
38	140		241	3	79	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	11.6(S) 6.57	26.2(S) 11.4	26.2(S) 11.4	34.0(S) 13.8	37.5(a) 15.5	37.5(a) 15.5	34.0(S) 13.8	41.8(S) 15.5
89	89		89	1	0	7.71(R)	9.08(d)	9.08(d)	9.08(d)	9.08(d)	12.3(R)	18.2(d)	18.2(d)	18.2(d)	18.2(d)	18.5(R)	27.2(d)
89	89		184	2	48	15.1(G)	16.7(G) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	19.8(G)	25.9(G)	32.1(G)	36.3(d)	36.3(d)	25.9(G)	35.2(G)
89	89		184	2	79	15.4(R) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	24.7(R)	33.8(G) 28.9	36.3(d) 35.2	36.3(d)	36.3(d)	33.8(G)	43.1(G) 40.0
89	89		235	2	111	15.4(R) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	24.7(R)	36.3(d) 28.9	36.3(d) 35.2	36.3(d)	36.3(d)	37.0(R) 35.2	51.0(G) 40.0
89	89		235	3	48	22.5(G) 15.4	24.1(G) 15.4	27.2(G) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.2(G)	33.3(G) 28.9	39.5(G) 35.2	45.7(G) 40.0	51.9(G) 40.0	33.3(G)	42.6(G) 40.0
89	89		286	3	79	23.1(R) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	37.0(R) 28.9	49.2(G) 28.9	54.5(d) 35.2	54.5(d) 40.0	54.5(d) 40.0	49.2(G) 35.2	58.4(G) 40.0
89	140		140	1	0	9.08(d)	9.08(d)	9.08(d)	9.08(d)	9.08(d)	14.9(R)	18.2(d)	18.2(d)	18.2(d)	18.2(d)	22.4(R)	27.2(d)
89	140		191	2	48	16.6(G) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	22.2(G)	29.7(G) 28.9	36.3(d) 35.2	36.3(d)	36.3(d)	29.7(G)	40.9(G) 40.0
89	140		191	2	79	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	29.9(R) 28.9	36.3(d) 28.9	36.3(d) 35.2	36.3(d)	36.3(d)	37.5(G) 35.2	48.7(G) 40.0
89	140		241	2	111	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	29.9(R) 28.9	36.3(d) 28.9	36.3(d) 35.2	36.3(d)	36.3(d)	42.5(G) 35.2	53.7(G) 40.0
89	140		241	3	48	22.2(G) 15.4	24.0(G) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.8(G)	35.2(G) 28.9	42.7(G) 35.2	50.2(G) 40.0	54.5(d) 40.0	35.2(G) 35.2	46.4(G) 40.0
89	140		241	3	79	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	41.5(G) 28.9	48.9(G) 28.9	54.5(d) 35.2	54.5(d) 40.0	54.5(d) 40.0	48.9(G) 35.2	57.1(T) 40.0
89	191		140	1	0	9.08(d)	9.08(d)	9.08(d)	9.08(d)	9.08(d)	18.2(d)	18.2(d)	18.2(d)	18.2(d)	18.2(d)	27.2(d)	27.2(d)
89	191		191	2	48	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	30.3(G) 28.9	36.3(d) 28.9	36.3(d) 35.2	36.3(d)	36.3(d)	40.5(G) 35.2	54.5(d) 40.0
89	191		191	2	79	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	36.3(d) 28.9	36.3(d) 28.9	36.3(d) 35.2	36.3(d)	36.3(d)	51.1(G) 35.2	54.5(d) 40.0
89	191		241	2	111	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	18.2(d) 15.4	36.3(d) 28.9	36.3(d) 28.9	36.3(d) 35.2	36.3(d)	36.3(d)	54.5(d) 35.2	54.5(d) 40.0
89	191		241	3	48	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	40.3(G) 28.9	50.5(G) 28.9	54.5(d) 35.2	54.5(d) 40.0	54.5(d) 40.0	50.5(G) 35.2	65.7(G) 40.0
89	191		241	3	79	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	27.2(d) 15.4	54.5(d) 28.9	54.5(d) 28.9	54.5(d) 35.2	54.5(d) 40.0	54.5(d) 40.0	71.7(G) 35.2	81.7(d) 40.0

Notes: The tabulated values are taken as the minimum of the yielding resistance, splitting resistance of the side members, and row shear, group tear-out and net tension resistances of the main member. The tabulated values are applicable when the main member is in tension. For main member in compression, the values are conservative when the failure mode is indicated as row shear (for connections with one fastener per row), group tear-out or net tension. The governing failure mode for each connection configuration is denoted by one of the following letters: (a)-(g), indicating the specific yielding failure mode as per O86 Clause 12.4.4.3.2, or (R), (G), (T) or (S), indicating failure due to row shear, group tear-out, net tension or splitting, respectively. When the shear resistance calculated as the summation of the side members using net section (O86 Clause 6.5.4.3) is lower than the tabulated value, the shear resistance is displayed (in kN) after the failure mode at the bottom of the cell. The minimum loaded end distance, a_L, is the maximum of 50 mm and 5 times the fastener diameter (O86 Clause 12.4.3.1). For the calculation of splitting resistance of the side members, the minimum unloaded edge distance e_p= 1.5 d_F is assumed. For the calculation of group tear-out and net tension resistances of the main member, the fastener hole diameter is assumed to be 2 mm larger than the fastener diameter. The lateral resistance P'_r is required to be adjusted to end-use conditions using modification factors depending on the governing failure mode as follows: P_r = P'_r (K_D K_SF K_T) for yielding failure mode (a) or (c), P_r = P'_r (K_Dy K_SF K_T) for yielding failure mode (d) or (g), P_r = P'_r (K_D K_Sv K_T) for row shear, P_r = P'_r (K_D K_St K_T) for group tear-out or net tension, P_r = P'_r (K_D K_SF K_T) for splitting. Modification factors are provided in Section 7.4 of the Wood Design Manual 2020. For untreated wood members under standard-term loading and dry service conditions, the modification factors are 1.0. Tabulated values are based on No.1/ No.2 grade for dimension lumber (38 to 102 mm in smaller dimension) and No.2 grade for timbers (114 or more in smaller dimension). Tabulated values are based on ASTM A307 grade steel bolts or dowels. N/A = not applicable.	...

5/8″ Bolt or dowel
Double Shear, Northern lumber

Wood Member

Fastener

Thickness
(mm)

Main
member
depth
(mm)
d₂

No.
of
rows

184

235

286

235

286

Side,
t₁

Main,
t₂

127

159

190

127

159

190

127

159

190

3.29(R)

3.95(R)

5.27(R)

6.25(a)

5.27(R)

7.90(R)

10.5(R)

12.5(a)

7.90(R)

11.9(R)

184

6.46(G)

7.12(G) 6.57

8.44(G) 6.57

9.75(G) 6.57

11.1(G) 6.57

8.44(G)

11.1(G)

13.7(G)

16.3(G) 15.5

19.0(G) 15.5

11.1(G)

15.0(G)

184

6.59(R) 6.57

7.90(R) 6.57

10.5(R) 6.57

11.6(S) 6.57

10.5(R)

14.4(G) 11.4

17.1(G) 13.8

19.7(G) 15.5

22.4(G) 15.5

14.4(G) 13.8

18.4(G) 15.5

235

111

6.59(R) 6.57

7.90(R) 6.57

10.5(R) 6.57

11.6(S) 6.57

10.5(R)

15.8(R) 11.4

20.5(G) 13.8

23.1(G) 15.5

25.0(a) 15.5

15.8(R) 13.8

21.8(G) 15.5

235

9.62(G) 6.57

10.3(G) 6.57

11.6(G) 6.57

11.6(S) 6.57

11.6(G) 11.4

14.2(G) 11.4

16.9(G) 13.8

19.5(G) 15.5

22.1(G) 15.5

14.2(G) 13.8

18.2(G) 15.5

286

9.88(R) 6.57

11.6(S) 6.57

15.8(R) 11.4

21.0(G) 11.4

23.6(G) 13.8

26.3(G) 15.5

28.9(G) 15.5

21.0(G) 13.8

24.9(G) 15.5

6.25(a)

12.3(R) 11.4

12.5(a) 11.4

12.5(a)

18.5(R) 13.8

18.8(a) 15.5

184

11.6(S) 6.57

19.8(G) 11.4

25.0(a) 11.4

25.0(a) 13.8

25.0(a) 15.5

25.9(G) 13.8

35.2(G) 15.5

184

11.6(S) 6.57

24.7(R) 11.4

25.0(a) 11.4

25.0(a) 13.8

25.0(a) 15.5

33.8(G) 13.8

37.5(a) 15.5

235

111

11.6(S) 6.57

24.7(R) 11.4

25.0(a) 11.4

25.0(a) 13.8

25.0(a) 15.5

34.0(S) 13.8

37.5(a) 15.5

235

11.6(S) 6.57

26.2(S) 11.4

34.0(S) 13.8

37.5(a) 15.5

33.3(G) 13.8

41.8(S) 15.5

286

11.6(S) 6.57

26.2(S) 11.4

34.0(S) 13.8

37.5(a) 15.5

34.0(S) 13.8

41.8(S) 15.5

140

6.25(a)

12.5(a) 11.4

12.5(a)

18.8(a) 13.8

18.8(a) 15.5

140

191

11.6(S) 6.57

22.2(G) 11.4

25.0(a) 11.4

25.0(a) 13.8

25.0(a) 15.5

29.7(G) 13.8

37.5(a) 15.5

140

191

11.6(S) 6.57

25.0(a) 11.4

25.0(a) 13.8

25.0(a) 15.5

34.0(S) 13.8

37.5(a) 15.5

140

241

111

11.6(S) 6.57

25.0(a) 11.4

25.0(a) 13.8

25.0(a) 15.5

34.0(S) 13.8

37.5(a) 15.5

140

241

11.6(S) 6.57

26.2(S) 11.4

34.0(S) 13.8

37.5(a) 15.5

34.0(S) 13.8

41.8(S) 15.5

140

241

11.6(S) 6.57

26.2(S) 11.4

34.0(S) 13.8

37.5(a) 15.5

34.0(S) 13.8

41.8(S) 15.5

7.71(R)

9.08(d)

12.3(R)

18.2(d)

18.5(R)

27.2(d)

184

15.1(G)

16.7(G) 15.4

18.2(d) 15.4

19.8(G)

25.9(G)

32.1(G)

36.3(d)

25.9(G)

35.2(G)

184

15.4(R) 15.4

18.2(d) 15.4

24.7(R)

33.8(G) 28.9

36.3(d) 35.2

36.3(d)

33.8(G)

43.1(G) 40.0

235

111

15.4(R) 15.4

18.2(d) 15.4

24.7(R)

36.3(d) 28.9

36.3(d) 35.2

36.3(d)

37.0(R) 35.2

51.0(G) 40.0

235

22.5(G) 15.4

24.1(G) 15.4

27.2(G) 15.4

27.2(d) 15.4

27.2(G)

33.3(G) 28.9

39.5(G) 35.2

45.7(G) 40.0

51.9(G) 40.0

33.3(G)

42.6(G) 40.0

286

23.1(R) 15.4

27.2(d) 15.4

37.0(R) 28.9

49.2(G) 28.9

54.5(d) 35.2

54.5(d) 40.0

49.2(G) 35.2

58.4(G) 40.0

140

9.08(d)

14.9(R)

18.2(d)

22.4(R)

27.2(d)

140

191

16.6(G) 15.4

18.2(d) 15.4

22.2(G)

29.7(G) 28.9

36.3(d) 35.2

36.3(d)

29.7(G)

40.9(G) 40.0

140

191

18.2(d) 15.4

29.9(R) 28.9

36.3(d) 28.9

36.3(d) 35.2

36.3(d)

37.5(G) 35.2

48.7(G) 40.0

140

241

111

18.2(d) 15.4

29.9(R) 28.9

36.3(d) 28.9

36.3(d) 35.2

36.3(d)

42.5(G) 35.2

53.7(G) 40.0

140

241

22.2(G) 15.4

24.0(G) 15.4

27.2(d) 15.4

27.8(G)

35.2(G) 28.9

42.7(G) 35.2

50.2(G) 40.0

54.5(d) 40.0

35.2(G) 35.2

46.4(G) 40.0

140

241

27.2(d) 15.4

41.5(G) 28.9

48.9(G) 28.9

54.5(d) 35.2

54.5(d) 40.0

48.9(G) 35.2

57.1(T) 40.0

191

140

9.08(d)

18.2(d)

27.2(d)

191

18.2(d) 15.4

30.3(G) 28.9

36.3(d) 28.9

36.3(d) 35.2

36.3(d)

40.5(G) 35.2

54.5(d) 40.0

191

18.2(d) 15.4

36.3(d) 28.9

36.3(d) 35.2

36.3(d)

51.1(G) 35.2

54.5(d) 40.0

191

241

111

18.2(d) 15.4

36.3(d) 28.9

36.3(d) 35.2

36.3(d)

54.5(d) 35.2

54.5(d) 40.0

191

241

27.2(d) 15.4

40.3(G) 28.9

50.5(G) 28.9

54.5(d) 35.2

54.5(d) 40.0

50.5(G) 35.2

65.7(G) 40.0

191

241

27.2(d) 15.4

54.5(d) 28.9

54.5(d) 35.2

54.5(d) 40.0

71.7(G) 35.2

81.7(d) 40.0

Notes:

The tabulated values are taken as the minimum of the yielding resistance, splitting resistance of the side members, and row shear, group tear-out and net tension resistances of the main member.
The tabulated values are applicable when the main member is in tension. For main member in compression, the values are conservative when the failure mode is indicated as row shear (for connections with one fastener per row), group tear-out or net tension.
The governing failure mode for each connection configuration is denoted by one of the following letters:
- (a)-(g), indicating the specific yielding failure mode as per O86 Clause 12.4.4.3.2, or
- (R), (G), (T) or (S), indicating failure due to row shear, group tear-out, net tension or splitting, respectively.
When the shear resistance calculated as the summation of the side members using net section (O86 Clause 6.5.4.3) is lower than the tabulated value, the shear resistance is displayed (in kN) after the failure mode at the bottom of the cell.
The minimum loaded end distance, a_L, is the maximum of 50 mm and 5 times the fastener diameter (O86 Clause 12.4.3.1).
For the calculation of splitting resistance of the side members, the minimum unloaded edge distance e_p= 1.5 d_F is assumed.
For the calculation of group tear-out and net tension resistances of the main member, the fastener hole diameter is assumed to be 2 mm larger than the fastener diameter.
The lateral resistance P'_r is required to be adjusted to end-use conditions using modification factors depending on the governing failure mode as follows:
- P_r = P'_r (K_D K_SF K_T) for yielding failure mode (a) or (c),
- P_r = P'_r (K_Dy K_SF K_T) for yielding failure mode (d) or (g),
- P_r = P'_r (K_D K_Sv K_T) for row shear,
- P_r = P'_r (K_D K_St K_T) for group tear-out or net tension,
- P_r = P'_r (K_D K_SF K_T) for splitting.
Modification factors are provided in Section 7.4 of the Wood Design Manual 2020. For untreated wood members under standard-term loading and dry service conditions, the modification factors are 1.0.
Tabulated values are based on No.1/ No.2 grade for dimension lumber (38 to 102 mm in smaller dimension) and No.2 grade for timbers (114 or more in smaller dimension).
Tabulated values are based on ASTM A307 grade steel bolts or dowels.
N/A = not applicable.

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