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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 1 Coefficients and determination coefficient (R2) of multiple regressions of Ks, Py, and Pmax on the decay depth and WDh

From: Degradation of shear performance of screwed joints caused by wood decay

Y

Multiple regression:

R−2

Y = a D + b WDh + c

a

b

c

Ks

− 0.0176

0.00130

− 0.141

0.85**

Py

− 0.0734

0.00838

− 0.827

0.53*

Pmax

− 0.1243

0.01206

− 0.433

0.74**

  1. D = decay depth (mm)
  2. WDh = sound wood density (kg/m3)
  3. *  Significant at the 5% level. ** significant at the 1% level
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