Civil Engineering Magazine Online - Abstracts Weighing Anchors Richard Wollmershauser, P.E., director of technical services, Hilti Inc., Tulsa, Oklahoma 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. 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. P.E. All around the Pacific Rim structural engineers are experimenting with concrete filled steel tubes as structural elements. The concrete filled tubes take advantage of the best properties of both materials to form a strong structural system that meets the Rim's stringent seismic standards. Structural engineers have experimented with the tubes for nearly ten years and a collaborative study with Japan should answer some of the looming questions behind using this new structural system.