Tag Archives: ASTM

Proposed ASTM test method to measure smoothness of concrete


The American Society for Testing and Materials (ASTM) Subcommittee E06.21 has suggested a new test method to help minimize the confusion in quantifying texture value at the concrete surface. WK49335, Test Method for Concrete Micro Surface Texture will be used to measure concrete surfaces with a contact stylus instrument—a profilometer.

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To Test or Not to Test…? A guide to field quality control

Photo © BigStockPhoto/Vichaya Kiatying-Angsulee

When properly applied, tests can yield valuable insight into the installed performance of systems, aid investigators in determining the cause of a failure, or help to determine if a product is performing to its intended level. However, when improperly applied, many tests and standards can produce misleading results, improper conclusions, and lead to unnecessary repairs or remediation efforts. Within this context, the article takes an in-depth look at roofing assemblies, along with glazing, masonry, and air barrier assemblies.

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Wind Load and Air Barrier Performance Levels

Photo courtesy DuPont Building Knowledge Center

This article describes the air barrier performance requirements for the desired wind load design specifications. The performance level is not determined by the type of air barrier material, but by the installation details. Examples of how these details can impact the performance level for a given air barrier system are provided, with special emphasis on mechanically fastened air barriers.

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