Lumber & Plywood |
Standard |
Retention (6) |
Assay (8) Zone |
| Above ground use | |||
|
Lumber, Timber Plywood Ground contact or fresh water use Lumber, Timber Plywood Out of contact with ground and continuously protected from liquid water Lumber Plywood Marine use Out of water no subject to splash Out of water & subject to splash In salt water Single Treatment Dual Treatment Bridges-important structural members Permanent Wood Foundations: Kiln-dried after treatment Lumber Plywood |
C2 C9 C2 C9 C31 C9 C2, C18 C2, C18 C2, C18 C2, C18 C2, C14 C22 C22 |
.25 .25 .40 .40 NL NL .40 .60 NL NL .60 .60 .60 |
0-.60" NA (11) 0-.60" NA (11) 0-.60"(20) 0-1.00"(21) NA 0-.60" 0-.60" 0-.60" 0-.60" 0-.60" 0-.60" NA |
| Glued Laminated Beams | |||
| Above Ground Use Ground or fresh water contact |
C28 C28 |
NL NL |
0-.60" 0-.60" |
| Poles | |||
| Agricultural-Round (13) Agricultural-Sawn (13) Construction-Round (13) Construction-Sawn (13) Utility-electric/telephone/lighting |
C16 C16 C23 C24 C4 |
.60 .60 NL NL .60 |
DF.25-1.00" 0-.60" DF.25-1.00" 0-.60" DF.25-1.00" |
| Piling | |||
| Foundation use-Round Foundation use-Sawn Freshwater use Salt water use Moderate borer hazard (14) Severe borer hazard (14) Dual treatment (15) |
C3 C24 C3 C3, C18 C3, C18 C3, C18 |
NL NL NL NL NL NL |
0-1.00" 0-1.00" 0-1.00" 0-2.00" 0-1.00" 0-1.00" |
| Posts | |||
| Fence-, Half-, Quarter-Round Construction-Sawn Agricultural-Round Agricultural-Sawn Guard Rail (including blocks) Round Sawn four sides |
C5 C15 C16 C16 C14 C14 |
.40 .40 .60 .60 .50 .50 |
0-1.00" 0-.60" 0-1.00" 0-.60" 0-1.00" 0-.60" |