Weighing Anchors

by Richard E. Wollmershauser, P.E., Dir. of Tech. Services; Hilti, Inc., Tulsa, OK,

Serial Information: Civil Engineering—ASCE, 1999, Vol. 69, Issue 1, Pg. 36-39

Document Type: Feature article


Modern anchorage systems offer design engineers and contractors unprecedented choice in load transfer mechanisms. Some anchors are highly specialized, while others are appropriate for a variety of connections. This article reviews current technical references, performance criteria and reliability information for a variety of types. Post-installed anchors�both mechanical and bonded�offer widely varied performance and characteristics. The Uniform Building Code requires tests for those anchors it doesn't list specifically, and those tests include procedures for installation, conditions of acceptance and seismic checks. The American Society for Testing and Materials (ASTM) has also developed standardized testing methods for anchors.

Subject Headings: Anchors | Seismic tests | Material tests | Standards and codes | Reviews | Load transfer | Load factors

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