1″ Bolt or dowelSingle Shear, D. Fir-L glulam to 6mm steel plates

Selection Tables

	1″ Bolt or dowel Single Shear, D. Fir-L glulam to 6mm 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)
102	152	203	254	305	102	152	203	254	305
80	114	1	0	17.8(R)	26.6(R)	35.5(R)	44.4(R)	53.3(R)	26.6(R)	39.9(R)	53.3(R)	66.6(R)	79.9(R)
80	228	2	76.2	35.5(R)	53.3(R)	71.0(R)	88.8(R)	107(R)	53.3(R)	79.9(R)	107(R)	122(G)	136(G)
80	266	2	125	35.5(R)	53.3(R)	71.0(R)	88.8(R)	107(R)	53.3(R)	79.9(R)	107(R)	133(R)	160(R)
80	266	2	125	35.5(R)	53.3(R)	71.0(R)	88.8(R)	107(R)	53.3(R)	79.9(R)	107(R)	133(R)	160(R)
130	152	1	0	28.8(R)	43.3(R)	57.7(R)	63.0(g)	63.0(g)	43.3(R)	64.9(R)	86.5(R)	94.4(g)	94.4(g)
130	228	2	76.2	57.7(R)	86.5(R)	115(R)	126(g)	126(g)	86.5(R)	130(R)	173(R)	189(g)	189(g)
130	266	2	125	57.7(R)	86.5(R)	115(R)	126(g)	126(g)	86.5(R)	130(R)	173(R)	189(g)	189(g)
130	266	2	125	57.7(R)	86.5(R)	115(R)	126(g)	126(g)	86.5(R)	130(R)	173(R)	189(g)	189(g)
175	190	1	0	38.8(R)	58.2(R)	63.0(g)	63.0(g)	63.0(g)	58.2(R)	87.4(R)	94.4(g)	94.4(g)	94.4(g)
175	228	2	76.2	77.7(R)	116(R)	126(g)	126(g)	126(g)	116(R)	175(R)	189(g)	189(g)	189(g)
175	266	2	125	77.7(R)	116(R)	126(g)	126(g)	126(g)	116(R)	175(R)	189(g)	189(g)	189(g)
175	266	2	125	77.7(R)	116(R)	126(g)	126(g)	126(g)	116(R)	175(R)	189(g)	189(g)	189(g)
215	266	1	0	47.7(R)	63.0(g)	63.0(g)	63.0(g)	63.0(g)	71.6(R)	94.4(g)	94.4(g)	94.4(g)	94.4(g)
215	266	2	76.2	95.4(R)	126(g)	126(g)	126(g)	126(g)	143(R)	189(g)	189(g)	189(g)	189(g)
215	266	2	125	95.4(R)	126(g)	126(g)	126(g)	126(g)	143(R)	189(g)	189(g)	189(g)	189(g)
215	266	2	125	95.4(R)	126(g)	126(g)	126(g)	126(g)	143(R)	189(g)	189(g)	189(g)	189(g)
265	342	1	0	58.8(R)	63.0(g)	63.0(g)	63.0(g)	63.0(g)	88.2(R)	94.4(g)	94.4(g)	94.4(g)	94.4(g)
265	342	2	76.2	118(R)	126(g)	126(g)	126(g)	126(g)	176(R)	189(g)	189(g)	189(g)	189(g)
265	342	2	125	118(R)	126(g)	126(g)	126(g)	126(g)	176(R)	189(g)	189(g)	189(g)	189(g)
265	342	2	125	118(R)	126(g)	126(g)	126(g)	126(g)	176(R)	189(g)	189(g)	189(g)	189(g)
315	380	1	0	63.0(g)	63.0(g)	63.0(g)	63.0(g)	63.0(g)	94.4(g)	94.4(g)	94.4(g)	94.4(g)	94.4(g)
315	380	2	76.2	126(g)	126(g)	126(g)	126(g)	126(g)	189(g)	189(g)	189(g)	189(g)	189(g)
315	380	2	125	126(g)	126(g)	126(g)	126(g)	126(g)	189(g)	189(g)	189(g)	189(g)	189(g)
315	380	2	125	126(g)	126(g)	126(g)	126(g)	126(g)	189(g)	189(g)	189(g)	189(g)	189(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 (b), P_r = P'_r (K_Dy K_SF K_T) for yielding failure mode (d), (e), (f) 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, and ASTM A36/36M 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″ Bolt or dowel
Single Shear, D. Fir-L glulam to 6mm 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

152

203

254

305

102

152

203

254

305

114

17.8(R)

26.6(R)

35.5(R)

44.4(R)

53.3(R)

26.6(R)

39.9(R)

53.3(R)

66.6(R)

79.9(R)

228

76.2

35.5(R)

53.3(R)

71.0(R)

88.8(R)

107(R)

53.3(R)

79.9(R)

107(R)

122(G)

136(G)

266

125

35.5(R)

53.3(R)

71.0(R)

88.8(R)

107(R)

53.3(R)

79.9(R)

107(R)

133(R)

160(R)

266

125

35.5(R)

53.3(R)

71.0(R)

88.8(R)

107(R)

53.3(R)

79.9(R)

107(R)

133(R)

160(R)

130

152

28.8(R)

43.3(R)

57.7(R)

63.0(g)

43.3(R)

64.9(R)

86.5(R)

94.4(g)

130

228

76.2

57.7(R)

86.5(R)

115(R)

126(g)

86.5(R)

130(R)

173(R)

189(g)

130

266

125

57.7(R)

86.5(R)

115(R)

126(g)

86.5(R)

130(R)

173(R)

189(g)

130

266

125

57.7(R)

86.5(R)

115(R)

126(g)

86.5(R)

130(R)

173(R)

189(g)

175

190

38.8(R)

58.2(R)

63.0(g)

58.2(R)

87.4(R)

94.4(g)

175

228

76.2

77.7(R)

116(R)

126(g)

116(R)

175(R)

189(g)

175

266

125

77.7(R)

116(R)

126(g)

116(R)

175(R)

189(g)

175

266

125

77.7(R)

116(R)

126(g)

116(R)

175(R)

189(g)

215

266

47.7(R)

63.0(g)

71.6(R)

94.4(g)

215

266

76.2

95.4(R)

126(g)

143(R)

189(g)

215

266

125

95.4(R)

126(g)

143(R)

189(g)

215

266

125

95.4(R)

126(g)

143(R)

189(g)

265

342

58.8(R)

63.0(g)

88.2(R)

94.4(g)

265

342

76.2

118(R)

126(g)

176(R)

189(g)

265

342

125

118(R)

126(g)

176(R)

189(g)

265

342

125

118(R)

126(g)

176(R)

189(g)

315

380

63.0(g)

94.4(g)

315

380

76.2

126(g)

189(g)

315

380

125

126(g)

189(g)

315

380

125

126(g)

189(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 (b),
- P_r = P'_r (K_Dy K_SF K_T) for yielding failure mode (d), (e), (f) 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, and ASTM A36/36M 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.