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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 6 Partial factors for different grades of dimensional lumber under different load combinations and ratios

From: A determination method of compressive design value of dimensional lumber

Grade

Load combination

Load ratios

0.0

0.25

0.5

1.0

2.0

3.0

4.0

Ic

D + R

1.270

1.228

1.172

1.080

1.018

1.000

0.990

D + O

1.270

1.200

1.124

1.014

0.940

0.914

0.902

D + S

1.270

1.330

1.352

1.364

1.404

1.430

1.446

D + W

1.270

1.346

1.324

1.308

1.318

1.330

1.340

IIc

D + R

1.216

1.176

1.122

1.034

0.976

0.956

0.948

D + O

1.216

1.150

1.076

0.970

0.900

0.876

0.864

D + S

1.216

1.274

1.294

1.306

1.344

1.370

1.386

D + W

1.216

1.290

1.268

1.252

1.262

1.274

1.282

IIIc

D + R

1.356

1.314

1.250

1.140

1.054

1.020

1.002

D + O

1.356

1.284

1.198

1.066

0.962

0.924

0.902

D + S

1.356

1.420

1.436

1.424

1.436

1.448

1.458

D + W

1.356

1.440

1.410

1.378

1.366

1.366

1.368

IVc

D + R

1.366

1.324

1.258

1.148

1.064

1.032

1.014

D + O

1.366

1.292

1.206

1.076

0.974

0.934

0.916

D + S

1.366

1.430

1.446

1.438

1.452

1.466

1.478

D + W

1.366

1.450

1.420

1.390

1.380

1.380

1.384

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