New industry standards for wood casework took effect on June 1st, 2020. Known as the ANSI/AWI 0641-2019—Architectural Wood Casework Standard, these succeed, replace, and supplant Section 10 of the Architectural Woodwork Standards, Edition 2 (2014) as recognized by AWI and AWI-QCP when specifying.
Taking a performance-based approach, the new standards for casework architecture have a stronger focus on testing, allowing woodworkers to build casework however they like, as long as it performs to one of the four duty levels.
Continue reading to learn more about what these duty levels mean, why the AWI Standards for casework have changed, and what changes you can expect to see.
How Have AWI Standards Changed?
Since the first edition of the Architectural Woodwork Standards (AWS) was released in 2009, it has undergone several updates, with the final edition published in 2014. Another important change happened in 2019, when AWI started the release of their new recognized standards (the AWI Standards), on March 15th. This affected four key standards:
- AWI 100 – Submittals: Providing effective and consistent communication of shop drawings, material data, samples, and product data
- AWI 200 – Care & Storage: How interior woodwork should be cared for and stored
- AWI 300 – Materials: Combining sections three and four of the AWS requirements for lumbar and sheet products
- ANSI/AWI 0620 – Finish Carpentry Installation: Supplants the installation criteria in sections six through 12 of the AWS
The most recent addition to the AWI Standards, and the star of this article, is the ANSI/AWI 0641 Architectural Wood Casework Standard, which came into effect for projects bid on or after on June 1st, 2020. This is the AWI Standards version of AWS Section 10 – Casework, and encompasses a range of casework architecture, including wood veneer cabinets, plastic-laminate-clad cabinets, and cabinet and drawer hardware as specified under CSI MasterFormat Division 6.
So how will the new AWI Standards affect woodworkers? Well, for those whose work already specifies and is in compliance with the AWS, the answer is that the changes won’t have much of an impact. The new versions of the Standards haven’t changed significantly from the AWS, so if you’re complying with these, things are pretty similar. However, you will need to get your casework tested or confirm your current method matches one of the library of test casework specs AWI offers in order to meet the duty level requirement and receive the required test reports.
Additionally, architects are still able to specify AWS Edition 2 in their documents. In this case, the new AWI Standards won’t be applicable. Similarly, all the current sections in the AWS that have yet to be revised are still in effect for all specifications, aside from the Installation sections of each standard, which are now part of the Finish Carpentry/Installation Standard.
What Are the Changes for the Wood Casework Standard?
The most important thing to note about the new wood casework standard is the structural and aesthetic tolerances it sets out for casework architecture applications.
Unlike the AWS, which were restrictive to woodworkers in regards to construction methods, ANSI/AWI 0641 is a lot more flexible, with a primary focus on aesthetics and structural integrity. It allows woodworkers to build casework in whatever way they prefer, and then get it tested to determine it complies with one of the four duty levels, which we’ll talk about now.
The AWI Standards set out four performance duty levels as determiners of structural performancefor wood casework. They include:
- Duty Level 1: For casework with light commercial applications, this is the lowest level of structural performance
- Duty Level 2: For casework with regular commercial applications
- Duty Level 3: For casework with institutional applications, this is the default performance standard
- Duty Level 4: For casework with laboratory applications, this demonstrates the highest level of structural performance
Under the new wood casework standard, if a piece of woodwork passes testing, it will be awarded one of these duty levels. To clarify, you have to specify which level you would like to perform the test to, and your casework will then either pass or fail that test. For example, if you submit cabinets for Performance Testing at a duty level 4 and the casework fails, you will not be provided a duty level it does pass. Instead, you would have to resubmit cabinets and have them re-tested at a different duty level, or make adjustments to your cabinets and resubmit them for level 4 Performance Testing. You will be provided a testing report confirming the joinery/structural performance of the product in a laboratory environment. The testing report is required for verification purposes.
The casework architecture will be tested based on the construction of the cabinet, drawer box, and adjustable shelf. Another key thing to note about duty levels is that the desired level the architect or owner wants the piece built to must be indicated in cabinet shop drawings.
As part of AWI’s mission to unite the architectural woodworking industry in excellence, some cabinet shop drawings for pieces that have been awarded duty levels may be included in the member library of available build methods.
With all this in mind, the main difference between the AWS Section 10 and the ANSI/AWI 0641 standard for casework is that the former was very prescriptive, while the latter is performance-based and, as a result, far more flexible. Instead of having to comply with stringent requirements relating to how a piece should be constructed, woodworkers will now be able to pass inspection if they:
- Have a test report proving that the casework has been awarded a duty level
- Can show the inspector how the casework conforms to the test report drawings and project specification. Remember Project specifications always supersede the Standards. requirements
- Meet the specified installation and aesthetic requirements
Why Have the Wood Casework Standards Been Updated?
Industry standards for wood casework have been updated to meet a growing desire for a performance-based system. The design community, in particular, has been moving away from prescriptive standards in favor of formalized testing standards, which provide assurance that a product will perform in the desired way.
The duty level requirements in AWI’s new casework standard act as a yardstick by which we can measure the performance of casework architecture. This provides assurance to the design community, mitigates risks of liability, and gives woodworkers the opportunity to develop their own unique construction methods while demonstrating compliance with the world’s leading quality standards for architectural woodwork.