Official Journal of the Japan Wood Research Society
Performance levels | OP | IO | LS | CP | C |
---|---|---|---|---|---|
Revised Drift ratio | \(\Delta /H\)≤ 1/300 | 1/300 ≤ \(\Delta /H\) ≤ 1/180 | 1/180 ≤ \(\Delta /H\) ≤ 1/115 | 1/115 ≤ \(\Delta /H\) ≤ 1/95 | \(\Delta /H\)≥ 1/95 |
Drift ratio suggested by the codes | \(\Delta /H\)≤ 1/250 | 1/250 ≤ \(\Delta /H\) ≤ 1/125 | 1/125 ≤ \(\Delta /H\) ≤ 2/125 | 2/125 ≤ \(\Delta /H\) ≤ 3/160 | \(\Delta /H\)≥ 1/48 |