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Official Journal of the Japan Wood Research Society

Table 4 Grading standard of mechanical properties of timber from Southeast Asia and Pacific regions by Forestry and Forest Products Research Institute (FFPRI) (1975)

From: Within-stem variations in mechanical properties of Melia azedarach planted in northern Vietnam

Grade

MOR (MPa)

MOE (GPa)

I

≤ 58.8

≤ 7.4

II

58.9–82.4

7.5–10.3

III

82.5–106.9

10.4–13.2

IV

107.0–130.4

13.3–16.2

V

≥ 130.5

≥ 16.3

  1. Units for MOR (kg/cm2) and MOE (103 kg/cm2) in original material were, respectively, converted to MPa and GPa for convenience in allocation the values in this study
  2. MOR modulus of rupture, MOE modulus of elasticity