5/8″ Bolt or dowelDouble Shear, Spruce-Pine glulam to 6 mm steel plates

Selection Tables

	5/8″ Bolt or dowel Double Shear, Spruce-Pine glulam 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)
64	95	127	159	190	64	95	127	159	190
80	114	1	0	14.9(R)	22.4(R)	29.9(R)	37.3(R)	37.6(c)	22.4(R)	33.6(R)	44.8(R)	56.0(R)	56.4(c)
80	152	2	47.625	29.9(R)	44.8(R)	58.2(G)	65.7(G)	73.1(G)	44.8(R)	61.9(G)	73.1(G)	84.3(G)	95.5(G)
80	190	2	79.375	29.9(R)	44.8(R)	59.7(R)	74.7(R)	75.2(c)	44.8(R)	67.2(R)	89.6(R)	112(R)	113(c)
80	228	2	111.125	29.9(R)	44.8(R)	59.7(R)	74.7(R)	75.2(c)	44.8(R)	67.2(R)	89.6(R)	112(R)	113(c)
80	228	3	47.625	44.8(R)	67.2(R)	86.5(G)	94.0(G)	101(G)	67.2(R)	90.2(G)	101(G)	113(G)	124(G)
80	228	3	62.5	44.8(R)	67.2(R)	89.6(R)	112(R)	113(c)	67.2(R)	101(R)	130(G)	141(G)	152(G)
130	152	1	0	24.3(R)	36.4(R)	48.5(R)	49.5(g)	49.5(g)	36.4(R)	54.6(R)	72.8(R)	74.2(g)	74.2(g)
130	152	2	47.625	48.5(R)	72.8(R)	94.6(G)	99.0(g)	99.0(g)	72.8(R)	101(G)	119(G)	137(G)	148(g)
130	190	2	79.375	48.5(R)	72.8(R)	97.1(R)	99.0(g)	99.0(g)	72.8(R)	109(R)	146(R)	148(g)	148(g)
130	228	2	111.125	48.5(R)	72.8(R)	97.1(R)	99.0(g)	99.0(g)	72.8(R)	109(R)	146(R)	148(g)	148(g)
130	228	3	47.625	72.8(R)	109(R)	141(G)	148(g)	148(g)	109(R)	147(G)	165(G)	183(G)	201(G)
130	228	3	62.5	72.8(R)	109(R)	146(R)	148(g)	148(g)	109(R)	164(R)	211(G)	223(g)	223(g)
175	190	1	0	32.7(R)	49.0(R)	49.5(g)	49.5(g)	49.5(g)	49.0(R)	73.5(R)	74.2(g)	74.2(g)	74.2(g)
175	190	2	47.625	65.3(R)	98.0(R)	99.0(g)	99.0(g)	99.0(g)	98.0(R)	135(G)	148(g)	148(g)	148(g)
175	190	2	79.375	65.3(R)	98.0(R)	99.0(g)	99.0(g)	99.0(g)	98.0(R)	147(R)	148(g)	148(g)	148(g)
175	228	2	111.125	65.3(R)	98.0(R)	99.0(g)	99.0(g)	99.0(g)	98.0(R)	147(R)	148(g)	148(g)	148(g)
175	228	3	47.625	98.0(R)	147(R)	148(g)	148(g)	148(g)	147(R)	197(G)	222(G)	223(g)	223(g)
175	228	3	62.5	98.0(R)	147(R)	148(g)	148(g)	148(g)	147(R)	221(R)	223(g)	223(g)	223(g)
215	266	1	0	40.1(R)	49.5(g)	49.5(g)	49.5(g)	49.5(g)	60.2(R)	74.2(g)	74.2(g)	74.2(g)	74.2(g)
215	266	2	47.625	80.3(R)	99.0(g)	99.0(g)	99.0(g)	99.0(g)	120(R)	148(g)	148(g)	148(g)	148(g)
215	266	2	79.375	80.3(R)	99.0(g)	99.0(g)	99.0(g)	99.0(g)	120(R)	148(g)	148(g)	148(g)	148(g)
215	266	2	111.125	80.3(R)	99.0(g)	99.0(g)	99.0(g)	99.0(g)	120(R)	148(g)	148(g)	148(g)	148(g)
215	266	3	47.625	120(R)	148(g)	148(g)	148(g)	148(g)	181(R)	223(g)	223(g)	223(g)	223(g)
215	266	3	62.5	120(R)	148(g)	148(g)	148(g)	148(g)	181(R)	223(g)	223(g)	223(g)	223(g)
265	342	1	0	49.5(R)	49.5(g)	49.5(g)	49.5(g)	49.5(g)	74.2(R)	74.2(g)	74.2(g)	74.2(g)	74.2(g)
265	342	2	47.625	98.9(R)	99.0(g)	99.0(g)	99.0(g)	99.0(g)	148(R)	148(g)	148(g)	148(g)	148(g)
265	342	2	79.375	98.9(R)	99.0(g)	99.0(g)	99.0(g)	99.0(g)	148(R)	148(g)	148(g)	148(g)	148(g)
265	342	2	111.125	98.9(R)	99.0(g)	99.0(g)	99.0(g)	99.0(g)	148(R)	148(g)	148(g)	148(g)	148(g)
265	342	3	47.625	148(R)	148(g)	148(g)	148(g)	148(g)	223(R)	223(g)	223(g)	223(g)	223(g)
265	342	3	62.5	148(R)	148(g)	148(g)	148(g)	148(g)	223(R)	223(g)	223(g)	223(g)	223(g)
315	380	1	0	49.5(g)	49.5(g)	49.5(g)	49.5(g)	49.5(g)	74.2(g)	74.2(g)	74.2(g)	74.2(g)	74.2(g)
315	380	2	47.625	99.0(g)	99.0(g)	99.0(g)	99.0(g)	99.0(g)	148(g)	148(g)	148(g)	148(g)	148(g)
315	380	2	79.375	99.0(g)	99.0(g)	99.0(g)	99.0(g)	99.0(g)	148(g)	148(g)	148(g)	148(g)	148(g)
315	380	2	111.125	99.0(g)	99.0(g)	99.0(g)	99.0(g)	99.0(g)	148(g)	148(g)	148(g)	148(g)	148(g)
315	380	3	47.625	148(g)	148(g)	148(g)	148(g)	148(g)	223(g)	223(g)	223(g)	223(g)	223(g)
315	380	3	62.5	148(g)	148(g)	148(g)	148(g)	148(g)	223(g)	223(g)	223(g)	223(g)	223(g)

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 (R), (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. For D.Fir-L glulam, the tabulated values are valid for 24f-E, 24f-EX, 20f-E, 20f-EX or 16c-E grade. For Spruce-Pine glulam, the tabulated values are valid for 20f-E, 20f-EX or 12c-E grade. Tabulated values are based on ASTM A307 grade steel bolts or dowels. 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.	.

5/8″ Bolt or dowel
Double Shear, Spruce-Pine glulam 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)

127

159

190

127

159

190

114

14.9(R)

22.4(R)

29.9(R)

37.3(R)

37.6(c)

22.4(R)

33.6(R)

44.8(R)

56.0(R)

56.4(c)

152

47.625

29.9(R)

44.8(R)

58.2(G)

65.7(G)

73.1(G)

44.8(R)

61.9(G)

73.1(G)

84.3(G)

95.5(G)

190

79.375

29.9(R)

44.8(R)

59.7(R)

74.7(R)

75.2(c)

44.8(R)

67.2(R)

89.6(R)

112(R)

113(c)

228

111.125

29.9(R)

44.8(R)

59.7(R)

74.7(R)

75.2(c)

44.8(R)

67.2(R)

89.6(R)

112(R)

113(c)

228

47.625

44.8(R)

67.2(R)

86.5(G)

94.0(G)

101(G)

67.2(R)

90.2(G)

101(G)

113(G)

124(G)

228

62.5

44.8(R)

67.2(R)

89.6(R)

112(R)

113(c)

67.2(R)

101(R)

130(G)

141(G)

152(G)

130

152

24.3(R)

36.4(R)

48.5(R)

49.5(g)

36.4(R)

54.6(R)

72.8(R)

74.2(g)

130

152

47.625

48.5(R)

72.8(R)

94.6(G)

99.0(g)

72.8(R)

101(G)

119(G)

137(G)

148(g)

130

190

79.375

48.5(R)

72.8(R)

97.1(R)

99.0(g)

72.8(R)

109(R)

146(R)

148(g)

130

228

111.125

48.5(R)

72.8(R)

97.1(R)

99.0(g)

72.8(R)

109(R)

146(R)

148(g)

130

228

47.625

72.8(R)

109(R)

141(G)

148(g)

109(R)

147(G)

165(G)

183(G)

201(G)

130

228

62.5

72.8(R)

109(R)

146(R)

148(g)

109(R)

164(R)

211(G)

223(g)

175

190

32.7(R)

49.0(R)

49.5(g)

49.0(R)

73.5(R)

74.2(g)

175

190

47.625

65.3(R)

98.0(R)

99.0(g)

98.0(R)

135(G)

148(g)

175

190

79.375

65.3(R)

98.0(R)

99.0(g)

98.0(R)

147(R)

148(g)

175

228

111.125

65.3(R)

98.0(R)

99.0(g)

98.0(R)

147(R)

148(g)

175

228

47.625

98.0(R)

147(R)

148(g)

147(R)

197(G)

222(G)

223(g)

175

228

62.5

98.0(R)

147(R)

148(g)

147(R)

221(R)

223(g)

215

266

40.1(R)

49.5(g)

60.2(R)

74.2(g)

215

266

47.625

80.3(R)

99.0(g)

120(R)

148(g)

215

266

79.375

80.3(R)

99.0(g)

120(R)

148(g)

215

266

111.125

80.3(R)

99.0(g)

120(R)

148(g)

215

266

47.625

120(R)

148(g)

181(R)

223(g)

215

266

62.5

120(R)

148(g)

181(R)

223(g)

265

342

49.5(R)

49.5(g)

74.2(R)

74.2(g)

265

342

47.625

98.9(R)

99.0(g)

148(R)

148(g)

265

342

79.375

98.9(R)

99.0(g)

148(R)

148(g)

265

342

111.125

98.9(R)

99.0(g)

148(R)

148(g)

265

342

47.625

148(R)

148(g)

223(R)

223(g)

265

342

62.5

148(R)

148(g)

223(R)

223(g)

315

380

49.5(g)

74.2(g)

315

380

47.625

99.0(g)

148(g)

315

380

79.375

99.0(g)

148(g)

315

380

111.125

99.0(g)

148(g)

315

380

47.625

148(g)

223(g)

315

380

62.5

148(g)

223(g)

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 (R), (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.
For D.Fir-L glulam, the tabulated values are valid for 24f-E, 24f-EX, 20f-E, 20f-EX or 16c-E grade. For Spruce-Pine glulam, the tabulated values are valid for 20f-E, 20f-EX or 12c-E grade.
Tabulated values are based on ASTM A307 grade steel bolts or dowels. 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.