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Official Journal of the Japan Wood Research Society

Table 7 Experimental results for 5-layer CLT bending panels (CL5/155/4800)

From: Bending, shear, and compressive properties of three- and five-layer cross-laminated timber fabricated with black spruce

No.

Load (kN)

Global Disp. (mm)

Local Disp. (mm)

Fmax (kN)

Global Ke (N/mm), (F2-F1)/(W2- W1)

Experimental bending stiffness, × 1011 (N mm2)

Seff, × 105 (mm3)

fb (MPa)

F1

F2

W1

W2

W1

W2

EIm,l

EIm,g

1

3.207

12.828

8.118

32.730

0.370

1.150

32.070

390.907

8.601

8.264

10.158

29.321

2

4.019

16.076

9.482

38.370

0.472

1.390

40.190

417.371

9.158

8.867

10.816

34.509

3

3.793

15.172

8.721

34.440

0.299

1.130

37.930

442.436

9.548

9.444

11.277

31.238

4

3.031

12.124

8.072

31.230

0.467

1.200

30.310

392.650

8.650

8.304

10.216

27.554

5

4.126

16.504

9.356

36.710

0.384

1.240

41.260

452.512

10.083

9.677

11.908

32.178

6

3.787

15.148

7.664

32.150

0.356

1.070

37.870

463.979

11.095

9.944

13.104

26.840

7

4.509

18.036

9.678

39.758

0.309

1.138

45.090

449.701

11.378

9.612

13.438

31.163

8

3.166

12.664

7.421

29.370

0.577

1.281

31.660

432.730

9.407

9.220

11.111

26.464

9

3.742

14.968

9.525

36.889

0.523

1.219

37.420

410.247

11.247

8.704

13.283

26.164

10

3.534

14.136

8.717

34.400

0.528

1.350

35.340

412.802

8.993

8.763

10.622

30.900

Mean

3.691

14.766

8.675

34.605

0.429

1.217

36.914

426.533

9.816

9.080

11.593

29.633

Cov

12.6%

12.6%

9.5%

9.6%

12.8%

8.3%

12.6%

6.0%

10.9%

6.5%

10.9%

9.5%