7/8″ Bolt or dowelSingle Shear, Spruce-Pine glulam to 6mm steel plate

Selection Tables

	7/8″ Bolt or dowel Single Shear, Spruce-Pine glulam to 6mm steel plate
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)
89	133	178	222	267	89	133	178	222	267
80	114	1	0	13.6(R)	20.4(R)	27.2(R)	34.0(R)	40.8(R)	20.4(R)	30.6(R)	40.8(R)	51.0(R)	61.2(R)
80	228	2	66.675	27.2(R)	40.8(R)	54.4(R)	68.0(R)	81.2(G)	40.8(R)	61.2(R)	81.2(G)	91.4(G)	102(G)
80	228	2	111.125	27.2(R)	40.8(R)	54.4(R)	68.0(R)	81.5(R)	40.8(R)	61.2(R)	81.5(R)	102(R)	122(R)
80	266	2	125	27.2(R)	40.8(R)	54.4(R)	68.0(R)	81.5(R)	40.8(R)	61.2(R)	81.5(R)	102(R)	122(R)
130	152	1	0	22.1(R)	33.1(R)	44.2(R)	46.7(g)	46.7(g)	33.1(R)	49.7(R)	66.3(R)	70.0(g)	70.0(g)
130	228	2	66.675	44.2(R)	66.3(R)	88.3(R)	93.3(g)	93.3(g)	66.3(R)	99.4(R)	132(G)	140(g)	140(g)
130	228	2	111.125	44.2(R)	66.3(R)	88.3(R)	93.3(g)	93.3(g)	66.3(R)	99.4(R)	133(R)	140(g)	140(g)
130	266	2	125	44.2(R)	66.3(R)	88.3(R)	93.3(g)	93.3(g)	66.3(R)	99.4(R)	133(R)	140(g)	140(g)
175	190	1	0	29.7(R)	44.6(R)	46.7(g)	46.7(g)	46.7(g)	44.6(R)	66.9(R)	70.0(g)	70.0(g)	70.0(g)
175	228	2	66.675	59.5(R)	89.2(R)	93.3(g)	93.3(g)	93.3(g)	89.2(R)	134(R)	140(g)	140(g)	140(g)
175	228	2	111.125	59.5(R)	89.2(R)	93.3(g)	93.3(g)	93.3(g)	89.2(R)	134(R)	140(g)	140(g)	140(g)
175	266	2	125	59.5(R)	89.2(R)	93.3(g)	93.3(g)	93.3(g)	89.2(R)	134(R)	140(g)	140(g)	140(g)
215	266	1	0	36.5(R)	46.7(g)	46.7(g)	46.7(g)	46.7(g)	54.8(R)	70.0(g)	70.0(g)	70.0(g)	70.0(g)
215	266	2	66.675	73.1(R)	93.3(g)	93.3(g)	93.3(g)	93.3(g)	110(R)	140(g)	140(g)	140(g)	140(g)
215	266	2	111.125	73.1(R)	93.3(g)	93.3(g)	93.3(g)	93.3(g)	110(R)	140(g)	140(g)	140(g)	140(g)
215	266	2	125	73.1(R)	93.3(g)	93.3(g)	93.3(g)	93.3(g)	110(R)	140(g)	140(g)	140(g)	140(g)
265	342	1	0	45.0(R)	46.7(g)	46.7(g)	46.7(g)	46.7(g)	67.5(R)	70.0(g)	70.0(g)	70.0(g)	70.0(g)
265	342	2	66.675	90.0(R)	93.3(g)	93.3(g)	93.3(g)	93.3(g)	135(R)	140(g)	140(g)	140(g)	140(g)
265	342	2	111.125	90.0(R)	93.3(g)	93.3(g)	93.3(g)	93.3(g)	135(R)	140(g)	140(g)	140(g)	140(g)
265	342	2	125	90.0(R)	93.3(g)	93.3(g)	93.3(g)	93.3(g)	135(R)	140(g)	140(g)	140(g)	140(g)
315	380	1	0	46.7(g)	46.7(g)	46.7(g)	46.7(g)	46.7(g)	70.0(g)	70.0(g)	70.0(g)	70.0(g)	70.0(g)
315	380	2	66.675	93.3(g)	93.3(g)	93.3(g)	93.3(g)	93.3(g)	140(g)	140(g)	140(g)	140(g)	140(g)
315	380	2	111.125	93.3(g)	93.3(g)	93.3(g)	93.3(g)	93.3(g)	140(g)	140(g)	140(g)	140(g)	140(g)
315	380	2	125	93.3(g)	93.3(g)	93.3(g)	93.3(g)	93.3(g)	140(g)	140(g)	140(g)	140(g)	140(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.	.

7/8″ Bolt or dowel
Single Shear, Spruce-Pine glulam to 6mm steel plate

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)

133

178

222

267

133

178

222

267

114

13.6(R)

20.4(R)

27.2(R)

34.0(R)

40.8(R)

20.4(R)

30.6(R)

40.8(R)

51.0(R)

61.2(R)

228

66.675

27.2(R)

40.8(R)

54.4(R)

68.0(R)

81.2(G)

40.8(R)

61.2(R)

81.2(G)

91.4(G)

102(G)

228

111.125

27.2(R)

40.8(R)

54.4(R)

68.0(R)

81.5(R)

40.8(R)

61.2(R)

81.5(R)

102(R)

122(R)

266

125

27.2(R)

40.8(R)

54.4(R)

68.0(R)

81.5(R)

40.8(R)

61.2(R)

81.5(R)

102(R)

122(R)

130

152

22.1(R)

33.1(R)

44.2(R)

46.7(g)

33.1(R)

49.7(R)

66.3(R)

70.0(g)

130

228

66.675

44.2(R)

66.3(R)

88.3(R)

93.3(g)

66.3(R)

99.4(R)

132(G)

140(g)

130

228

111.125

44.2(R)

66.3(R)

88.3(R)

93.3(g)

66.3(R)

99.4(R)

133(R)

140(g)

130

266

125

44.2(R)

66.3(R)

88.3(R)

93.3(g)

66.3(R)

99.4(R)

133(R)

140(g)

175

190

29.7(R)

44.6(R)

46.7(g)

44.6(R)

66.9(R)

70.0(g)

175

228

66.675

59.5(R)

89.2(R)

93.3(g)

89.2(R)

134(R)

140(g)

175

228

111.125

59.5(R)

89.2(R)

93.3(g)

89.2(R)

134(R)

140(g)

175

266

125

59.5(R)

89.2(R)

93.3(g)

89.2(R)

134(R)

140(g)

215

266

36.5(R)

46.7(g)

54.8(R)

70.0(g)

215

266

66.675

73.1(R)

93.3(g)

110(R)

140(g)

215

266

111.125

73.1(R)

93.3(g)

110(R)

140(g)

215

266

125

73.1(R)

93.3(g)

110(R)

140(g)

265

342

45.0(R)

46.7(g)

67.5(R)

70.0(g)

265

342

66.675

90.0(R)

93.3(g)

135(R)

140(g)

265

342

111.125

90.0(R)

93.3(g)

135(R)

140(g)

265

342

125

90.0(R)

93.3(g)

135(R)

140(g)

315

380

46.7(g)

70.0(g)

315

380

66.675

93.3(g)

140(g)

315

380

111.125

93.3(g)

140(g)

315

380

125

93.3(g)

140(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.