1/2″ Bolt or dowelDouble Shear, D. Fir-L lumber to 6 mm steel plates

Selection Tables

	1/2″ Bolt or dowel Double Shear, D. Fir-L lumber to 6 mm steel plates
Wood Member	Fastener
Thickness (mm)	Depth (mm)	No. of rows		No. of fasteners in a row
2	3
Bolt spacing in a row taken as the minimum of the loaded end distance³, a_L, and the spacing between bolts in a row, S_R (mm)
51	76	102	127	152	51	76	102	127	152
38	89	1	0	6.16(R)	9.24(R)	12.3(R)	15.4(R)	16.5(c)	9.24(R)	13.9(R)	18.5(R)	22.1(T)	22.1(T)
38	140	2	38.1	9.77(G)	12.9(G)	15.9(G)	19.0(G)	22.1(G)	12.9(G)	17.5(G)	22.1(G)	26.7(G)	28.5(T)
38	140	2	63.5	12.3(R)	16.8(G)	19.9(G)	22.9(G)	26.0(G)	16.8(G)	21.4(G)	26.0(G)	28.5(T)	28.5(T)
38	184	2	88.9	12.3(R)	18.5(R)	23.8(G)	26.9(G)	29.9(G)	18.5(R)	25.3(G)	29.9(G)	34.6(G)	36.8(T)
38	184	3	38.1	13.4(G)	16.5(G)	19.5(G)	22.6(G)	25.7(G)	16.5(G)	21.1(G)	25.7(G)	30.3(G)	33.3(T)
38	235	3	62.5	18.5(R)	24.0(G)	27.1(G)	30.2(G)	33.2(G)	24.0(G)	28.6(G)	33.2(G)	37.9(G)	41.7(T)
89	89	1	0	14.4(R)	21.6(R)	28.9(R)	34.0(g)	34.0(g)	21.6(R)	32.5(R)	43.3(R)	51.0(g)	51.0(g)
89	140	2	38.1	22.9(G)	30.1(G)	37.3(G)	44.5(G)	51.8(G)	30.1(G)	40.9(G)	51.8(G)	62.6(G)	66.8(T)
89	140	2	63.5	28.9(R)	39.3(G)	46.5(G)	53.7(G)	60.9(G)	39.3(G)	50.1(G)	60.9(G)	66.8(T)	66.8(T)
89	184	2	88.9	28.9(R)	43.3(R)	55.7(G)	62.9(G)	68.0(g)	43.3(R)	59.3(G)	70.1(G)	80.9(G)	86.2(T)
89	184	3	38.1	31.3(G)	38.6(G)	45.8(G)	53.0(G)	60.2(G)	38.6(G)	49.4(G)	60.2(G)	71.0(G)	78.0(T)
89	235	3	62.5	43.3(R)	56.2(G)	63.4(G)	70.6(G)	77.8(G)	56.2(G)	67.0(G)	77.8(G)	88.7(G)	97.6(T)
140	140	1	0	17.9(R)	26.9(R)	34.0(g)	34.0(g)	34.0(g)	26.9(R)	40.3(R)	51.0(g)	51.0(g)	51.0(g)
140	140	2	38.1	26.6(G)	35.6(G)	44.6(G)	53.5(G)	62.5(G)	35.6(G)	49.0(G)	62.5(G)	68.8(T)	68.8(T)
140	140	2	63.5	35.8(R)	45.1(G)	54.0(G)	63.0(G)	68.0(g)	45.1(G)	58.5(G)	68.8(T)	68.8(T)	68.8(T)
140	191	2	88.9	35.8(R)	53.8(R)	63.5(G)	68.0(g)	68.0(g)	53.8(R)	68.0(G)	81.4(G)	92.8(T)	92.8(T)
140	191	3	38.1	35.4(G)	44.3(G)	53.3(G)	62.2(G)	71.2(G)	44.3(G)	57.8(G)	71.2(G)	84.4(T)	84.4(T)
140	191	3	62.5	53.5(G)	62.5(G)	71.4(G)	80.4(G)	84.4(T)	62.5(G)	75.9(G)	84.4(T)	84.4(T)	84.4(T)
191	140	1	0	24.5(R)	34.0(g)	34.0(g)	34.0(g)	34.0(g)	36.7(R)	51.0(g)	51.0(g)	51.0(g)	51.0(g)
191	140	2	38.1	36.3(G)	48.6(G)	60.8(G)	68.0(g)	68.0(g)	48.6(G)	66.9(G)	85.2(G)	86.7(T)	86.7(T)
191	140	2	63.5	48.9(R)	61.5(G)	68.0(g)	68.0(g)	68.0(g)	61.5(G)	79.8(G)	86.7(T)	86.7(T)	86.7(T)
191	191	2	88.9	48.9(R)	68.0(g)	68.0(g)	68.0(g)	68.0(g)	73.4(R)	92.7(G)	102(g)	102(g)	102(g)
191	191	3	38.1	48.2(G)	60.5(G)	72.7(G)	84.9(G)	97.1(G)	60.5(G)	78.8(G)	97.1(G)	115(T)	115(T)
191	191	3	62.5	73.0(G)	85.2(G)	97.5(G)	102(g)	102(g)	85.2(G)	104(G)	115(T)	115(T)	115(T)
241	140	1	0	30.9(R)	34.0(g)	34.0(g)	34.0(g)	34.0(g)	46.3(R)	51.0(g)	51.0(g)	51.0(g)	51.0(g)
241	140	2	38.1	43.9(G)	59.3(G)	68.0(g)	68.0(g)	68.0(g)	59.3(G)	82.4(G)	87.1(T)	87.1(T)	87.1(T)
241	140	2	63.5	58.0(G)	68.0(g)	68.0(g)	68.0(g)	68.0(g)	73.4(G)	87.1(T)	87.1(T)	87.1(T)	87.1(T)
241	191	2	88.9	61.7(R)	68.0(g)	68.0(g)	68.0(g)	68.0(g)	92.6(R)	102(g)	102(g)	102(g)	102(g)
241	191	3	38.1	60.9(G)	76.3(G)	91.7(G)	102(g)	102(g)	76.3(G)	99.4(G)	123(G)	133(T)	133(T)
241	191	3	62.5	92.1(G)	102(g)	102(g)	102(g)	102(g)	108(G)	131(G)	133(T)	133(T)	133(T)
292	140	1	0	34.0(g)	34.0(g)	34.0(g)	34.0(g)	34.0(g)	51.0(g)	51.0(g)	51.0(g)	51.0(g)	51.0(g)
292	140	2	38.1	53.2(G)	68.0(g)	68.0(g)	68.0(g)	68.0(g)	71.9(G)	95.9(T)	95.9(T)	95.9(T)	95.9(T)
292	140	2	63.5	68.0(g)	68.0(g)	68.0(g)	68.0(g)	68.0(g)	89.0(G)	95.9(T)	95.9(T)	95.9(T)	95.9(T)
292	191	2	88.9	68.0(g)	68.0(g)	68.0(g)	68.0(g)	68.0(g)	102(g)	102(g)	102(g)	102(g)	102(g)
292	191	3	38.1	68.9(G)	87.6(G)	102(g)	102(g)	102(g)	87.6(G)	116(G)	127(T)	127(T)	127(T)
292	191	3	62.5	102(G)	102(g)	102(g)	102(g)	102(g)	121(G)	127(T)	127(T)	127(T)	127(T)

Notes: The tabulated values are the minimum of the yielding resistance, row shear, group tear-out and net tension resistances of the wood member, and are applicable to tension members. For compression members, the values are conservative when the governing failure mode is indicated as group tear-out or net tension since the resistance is based on yielding and row shear only. The governing failure mode for each connection configuration is denoted either by lowercase letter (a)-(g), indicating the specific yielding failure mode as per O86 Clause 12.4.4.3.2, or by uppercase letter ®, (G) or (T), indicating failure due to row shear, group tear-out or net tension in the main member. 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 group tear-out and net tension resistances, the fastener hole diameter is assumed to be 2 mm larger than the fastener diameter. The connection 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 for yielding failure mode (a), P_r = P'_r (K_D K_SF K_T) for yielding failure mode (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. 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, and ASTM A36/A36M grade steel plate. The resistance of steel plate needs to be checked separately. A single steel splice plate is not permitted to be used for multiple rows of bolts or dowels when the distance between the two outer rows exceeds 125 mm. N/A = not applicable.	.

1/2″ Bolt or dowel
Double Shear, D. Fir-L lumber to 6 mm steel plates

Wood Member

Fastener

Thickness
(mm)

Depth
(mm)

No.
of
rows

No. of fasteners in a row

Bolt spacing in a row taken as the minimum of the loaded end distance³, a_L, and the spacing between bolts in a row, S_R (mm)

102

127

152

102

127

152

6.16(R)

9.24(R)

12.3(R)

15.4(R)

16.5(c)

9.24(R)

13.9(R)

18.5(R)

22.1(T)

140

38.1

9.77(G)

12.9(G)

15.9(G)

19.0(G)

22.1(G)

12.9(G)

17.5(G)

22.1(G)

26.7(G)

28.5(T)

140

63.5

12.3(R)

16.8(G)

19.9(G)

22.9(G)

26.0(G)

16.8(G)

21.4(G)

26.0(G)

28.5(T)

184

88.9

12.3(R)

18.5(R)

23.8(G)

26.9(G)

29.9(G)

18.5(R)

25.3(G)

29.9(G)

34.6(G)

36.8(T)

184

38.1

13.4(G)

16.5(G)

19.5(G)

22.6(G)

25.7(G)

16.5(G)

21.1(G)

25.7(G)

30.3(G)

33.3(T)

235

62.5

18.5(R)

24.0(G)

27.1(G)

30.2(G)

33.2(G)

24.0(G)

28.6(G)

33.2(G)

37.9(G)

41.7(T)

14.4(R)

21.6(R)

28.9(R)

34.0(g)

21.6(R)

32.5(R)

43.3(R)

51.0(g)

140

38.1

22.9(G)

30.1(G)

37.3(G)

44.5(G)

51.8(G)

30.1(G)

40.9(G)

51.8(G)

62.6(G)

66.8(T)

140

63.5

28.9(R)

39.3(G)

46.5(G)

53.7(G)

60.9(G)

39.3(G)

50.1(G)

60.9(G)

66.8(T)

184

88.9

28.9(R)

43.3(R)

55.7(G)

62.9(G)

68.0(g)

43.3(R)

59.3(G)

70.1(G)

80.9(G)

86.2(T)

184

38.1

31.3(G)

38.6(G)

45.8(G)

53.0(G)

60.2(G)

38.6(G)

49.4(G)

60.2(G)

71.0(G)

78.0(T)

235

62.5

43.3(R)

56.2(G)

63.4(G)

70.6(G)

77.8(G)

56.2(G)

67.0(G)

77.8(G)

88.7(G)

97.6(T)

140

17.9(R)

26.9(R)

34.0(g)

26.9(R)

40.3(R)

51.0(g)

140

38.1

26.6(G)

35.6(G)

44.6(G)

53.5(G)

62.5(G)

35.6(G)

49.0(G)

62.5(G)

68.8(T)

140

63.5

35.8(R)

45.1(G)

54.0(G)

63.0(G)

68.0(g)

45.1(G)

58.5(G)

68.8(T)

140

191

88.9

35.8(R)

53.8(R)

63.5(G)

68.0(g)

53.8(R)

68.0(G)

81.4(G)

92.8(T)

140

191

38.1

35.4(G)

44.3(G)

53.3(G)

62.2(G)

71.2(G)

44.3(G)

57.8(G)

71.2(G)

84.4(T)

140

191

62.5

53.5(G)

62.5(G)

71.4(G)

80.4(G)

84.4(T)

62.5(G)

75.9(G)

84.4(T)

191

140

24.5(R)

34.0(g)

36.7(R)

51.0(g)

191

140

38.1

36.3(G)

48.6(G)

60.8(G)

68.0(g)

48.6(G)

66.9(G)

85.2(G)

86.7(T)

191

140

63.5

48.9(R)

61.5(G)

68.0(g)

61.5(G)

79.8(G)

86.7(T)

191

88.9

48.9(R)

68.0(g)

73.4(R)

92.7(G)

102(g)

191

38.1

48.2(G)

60.5(G)

72.7(G)

84.9(G)

97.1(G)

60.5(G)

78.8(G)

97.1(G)

115(T)

191

62.5

73.0(G)

85.2(G)

97.5(G)

102(g)

85.2(G)

104(G)

115(T)

241

140

30.9(R)

34.0(g)

46.3(R)

51.0(g)

241

140

38.1

43.9(G)

59.3(G)

68.0(g)

59.3(G)

82.4(G)

87.1(T)

241

140

63.5

58.0(G)

68.0(g)

73.4(G)

87.1(T)

241

191

88.9

61.7(R)

68.0(g)

92.6(R)

102(g)

241

191

38.1

60.9(G)

76.3(G)

91.7(G)

102(g)

76.3(G)

99.4(G)

123(G)

133(T)

241

191

62.5

92.1(G)

102(g)

108(G)

131(G)

133(T)

292

140

34.0(g)

51.0(g)

292

140

38.1

53.2(G)

68.0(g)

71.9(G)

95.9(T)

292

140

63.5

68.0(g)

89.0(G)

95.9(T)

292

191

88.9

68.0(g)

102(g)

292

191

38.1

68.9(G)

87.6(G)

102(g)

87.6(G)

116(G)

127(T)

292

191

62.5

102(G)

102(g)

121(G)

127(T)

Notes:

The tabulated values are the minimum of the yielding resistance, row shear, group tear-out and net tension resistances of the wood member, and are applicable to tension members. For compression members, the values are conservative when the governing failure mode is indicated as group tear-out or net tension since the resistance is based on yielding and row shear only.
The governing failure mode for each connection configuration is denoted either by lowercase letter (a)-(g), indicating the specific yielding failure mode as per O86 Clause 12.4.4.3.2, or by uppercase letter ®, (G) or (T), indicating failure due to row shear, group tear-out or net tension in the main member.
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 group tear-out and net tension resistances, the fastener hole diameter is assumed to be 2 mm larger than the fastener diameter.
The connection 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 for yielding failure mode (a),
- P_r = P'_r (K_D K_SF K_T) for yielding failure mode (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.
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, and ASTM A36/A36M grade steel plate. The resistance of steel plate needs to be checked separately.
A single steel splice plate is not permitted to be used for multiple rows of bolts or dowels when the distance between the two outer rows exceeds 125 mm.
N/A = not applicable.