Moment and shear capacity of Ply-lam composed with plywood and structural timber under out-of-plane bending

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 1 Materials of layer for Ply-lam

	Timber (No. 3 grade)	Plywood (No. 1 grade)
Density (kg/m³)	570^a	650^a
Modulus of elasticity (MOE, MPa)	9300^b	6800^a
Bending strength (MPa)
From Korean Design Standard	7.1^c
From experimental data	19.5^d
Rolling shear strength (MPa)
From Korean Design Standard		1.3^e
From experimental data		1.5^f

^aAverage value of measured data in this study
^bReference value of No. 3 visual grade timber in standard [26]
^c2.1× allowable bending strength of No. 3 visual grade timber (3.4 MPa) in standard [26]
^d5th percentile value of No. 3 visual grade timber by structural-size test [27]
^e3.15× rolling shear allowable strength of No. 1 plywood (0.4 MPa) in standard [26]
^f5th percentile of rolling shear strength for plywood from experimental test data [28]