scope:

This test method determines the relative effectiveness of wood preservatives in small wood specimens exposed to a natural marine environment (UC5A, UC5B, UC5C). Figures 1 and 2 of Standard U1, Commodity Specification G: Marine Applications show the geographical zone distribution of these Use Categories in the US marine environment. They are distinguished by the severity risk of attack and damage by marine borers. Standard U1, Commodity Specification G also presents preservative retentions required to provide acceptable performance when exposed in these zones. UC5C represents the most severe risk. Test data developed from exposure in zones with greater severity risk may be used to support acceptable preservative performance in zones of lesser severity risk (e.g.: UC5C data can support UC5B and UC5A efficacy, but UC5A data cannot be used to support UC5B and UC5C efficacy). It is not within the scope of this procedure to determine the ability of specific retention levels to protect commercial size piles and timbers. This test method is intended to provide relative performance data, for the purpose of standardization, of proposed and established preservative systems with a history of known performance.

The requirements for preparing the material for testing and the test procedures appear in the following order:

This standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.