those species and preservatives are listed in a
commodity specification that have previously been found
suitable for use in a particular application, or for which test
information has been submitted to warrant their inclusion.
If specifying a treated wood product, Standard U1 is the
appropriate reference. The commodity specifications within
Standard U1 contain retention values for each preservative
and species combination which are appropriate for a
particular use category. For example, if specifying sill plates
for residential construction, the specifier would likely
determine that Use Category 2 is the correct exposure. A
very simple specification permitting the use of all appropriate
species/preservative combinations might be written, "All
lumber for sill plates shall be treated with waterborne
preservatives to the requirements for Use Category 2 (UC2)
in accordance with AWPA Standard U1." However, if the
specifier has a particular species and preservative in mind,
the specification can be slightly more detailed: "All lumber
for sill plates shall be Southern pine treated with inorganic
boron (SBX) to the requirements for Use Category 2 (UC2)
in accordance with AWPA Standard U1." The specifier may
go on to include additional information, such as requirements
for third-party auditing in accordance with the Treated Wood
Program of the American Lumber Standard Committee
(ALSC).
In addition to AWPA Standards, a specifier may choose
to include additional requirements for treated wood products
used for special applications, such as aquatic environments.
A "Best Management Practices" (BMP) document has been
developed by the Western Wood Preservers Institute (WWPI)
specifically for treated wood used in aquatic and other
sensitive environments. This and other pertinent information
is available on the WWPI website: www.wwpinstitute.org.
When a wood treater is specifying a preservative,
hydrocarbon solvent, or barrier protection system, the
specifier would need to refer to the appropriate "P Standard".
Analytical methods are often specified to provide direction
as to the type of analysis required, or to limit the analysis to
the most reliable method. Evaluation methods are specified
by AWPA's Technical Committees for the purpose of
generating data in order to obtain a preservative listing in
AWPA Standards. Miscellaneous Standards are specified for
various reasons, depending on the content of the Standard.
Modifications to AWPA Standards
As mentioned previously, AWPA Standards are
developed in an open, consensus-based process. The
principle of openness dictates that no one is excluded from
the process. One is not required to be a member ofAWPA to
propose a revision to an AWPA Standard, to propose a new
AWPA Standard, or to propose the deletion of an AWPA
Standard. Furthermore, all ofAWPA's Technical Committee
meetings are open to all individuals with an interest in the
development ofAWPA Standards. The Technical Committee
Regulations governing AWPA Standards development and the
required forms are found in this book, as well as on the
AWPA website: www.awpa.com
those species and preservatives are listed in a commodity specification that have previously been found suitable for use in a particular application, or for which test information has been submitted to warrant their inclusion. If specifying a treated wood product, Standard U1 is the appropriate reference. The commodity specifications within Standard U1 contain retention values for each preservative and species combination which are appropriate for a particular use category. For example, if specifying sill plates for residential construction, the specifier would likely determine that Use Category 2 is the correct exposure. A very simple specification permitting the use of all appropriate species/preservative combinations might be written, "All lumber for sill plates shall be treated with waterborne preservatives to the requirements for Use Category 2 (UC2) in accordance with AWPA Standard U1." However, if the specifier has a particular species and preservative in mind, the specification can be slightly more detailed: "All lumber for sill plates shall be Southern pine treated with inorganic boron (SBX) to the requirements for Use Category 2 (UC2) in accordance with AWPA Standard U1." The specifier may go on to include additional information, such as requirements for third-party auditing in accordance with the Treated Wood Program of the American Lumber Standard Committee (ALSC). In addition to AWPA Standards, a specifier may choose to include additional requirements for treated wood products used for special applications, such as aquatic environments. A "Best Management Practices" (BMP) document has been developed by the Western Wood Preservers Institute (WWPI) specifically for treated wood used in aquatic and other sensitive environments. This and other pertinent information is available on the WWPI website: www.wwpinstitute.org. When a wood treater is specifying a preservative, hydrocarbon solvent, or barrier protection system, the specifier would need to refer to the appropriate "P Standard". Analytical methods are often specified to provide direction as to the type of analysis required, or to limit the analysis to the most reliable method. Evaluation methods are specified by AWPA's Technical Committees for the purpose of generating data in order to obtain a preservative listing in AWPA Standards. Miscellaneous Standards are specified for various reasons, depending on the content of the Standard. Modifications to AWPA Standards As mentioned previously, AWPA Standards are developed in an open, consensus-based process. The principle of openness dictates that no one is excluded from the process. One is not required to be a member ofAWPA to propose a revision to an AWPA Standard, to propose a new AWPA Standard, or to propose the deletion of an AWPA Standard. Furthermore, all ofAWPA's Technical Committee meetings are open to all individuals with an interest in the development ofAWPA Standards. The Technical Committee Regulations governing AWPA Standards development and the required forms are found in this book, as well as on the AWPA website: www.awpa.com
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