| USE CATEGORY |
SERVICE CONDITIONS |
COMMODITY |
Statistical Values |
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| Construction Waste (%) |
Mean Service Life (yr) |
Standard Deviation (yr) |
Geometric Mean of Service Life (yr) |
SD of Lognormal Service Life (yr) |
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| UC1 |
Interior construction Above Ground Dry |
These uses not applicable regarding preservative usage |
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| UC2 |
Interior construction Above Ground Damp |
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| UC3A |
Exterior construction Above Ground Coated & rapid water runoff |
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| UC3B |
Exterior construction Above Ground Uncoated or poor water run-off |
Sawn Product |
2.5% |
10 |
5 |
2.2 |
0.47 |
| Plywood |
2.5% |
10 |
5 |
2.2 |
0.47 |
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| UC4A |
Ground contact or fresh water Non-critical components |
Sawn Product |
2.5% |
15 |
5 |
2.7 |
0.32 |
| Posts |
0.0% |
20 |
5 |
3.0 |
0.25 |
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| Plywood |
2.5% |
15 |
5 |
2.7 |
0.32 |
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| UC4B |
Ground contact or fresh water Critical components or difficult replacement |
Sawn Product |
2.5% |
15 |
5 |
2.7 |
0.32 |
| Posts |
0.0% |
20 |
5 |
3.0 |
0.25 |
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| Plywood |
2.5% |
15 |
5 |
2.7 |
0.32 |
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| UC4C |
Ground contact or fresh water Critical structural components |
Sawn Product |
2.5% |
30 |
5 |
3.4 |
0.17 |
| Round piling |
0.0% |
50 |
10 |
3.9 |
0.20 |
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| Posts |
0.0% |
25 |
5 |
3.2 |
0.20 |
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| UC 4A, B, & C |
Ground Contact |
Poles |
0.0% |
60 |
15 |
4.1 |
0.25 |
| Crossties |
0.0% |
40 |
10 |
3.7 |
0.25 |
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| UC5A |
Salt or brackish water and adjacent mud zone Northern waters |
Sawn Product |
2.5% |
40 |
10 |
3.7 |
0.25 |
| Piles |
0.0% |
40 |
10 |
3.7 |
0.25 |
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| UC5B |
Salt or brackish water and adjacent mud zone NJ to GA, south of SanFran |
Sawn Product |
2.5% |
40 |
10 |
3.7 |
0.25 |
| Piles |
0.0% |
40 |
10 |
3.7 |
0.25 |
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| UC5C |
Salt or brackish water and adjacent mud zone South of GA, Gulf Coast, Hawaii, and Puerto Rico |
Sawn Product |
2.5% |
40 |
10 |
3.7 |
0.25 |
| Piles |
0.0% |
40 |
10 |
3.7 |
0.25 |
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| UC 5A, B, & C |
Marine Exposure |
Plywood |
2.5% |
40 |
10 |
3.7 |
0.25 |