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Official Journal of the Japan Wood Research Society

Journal of Wood Science Cover Image

Table 4 Statistical parameters of compression strength for different grades

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

Grade No. Un-adjusted value (UCS) Adjusted value (UCS12)
AVG (MPa) COV (%) AVG (MPa) COV (%)
Ic 418 49.555a 19.5 49.841a 19.3
IIc 207 38.282b 17.0 38.386b 17.1
IIIc 274 41.401b 24.8 40.956b 24.7
IVc 150 39.608b 28.8 39.000b 28.5