Assessment of Transmission Line Foundations

by Anthony M. DiGioia, Jr., GAI Consultants Inc, United States,

Document Type: Proceeding Paper

Part of: Building Code Requirements for Masonry Structures (ACI 530-88/ASCE 5-88) and Specifications for Masonry Structures (ACI 530.1-88/ASCE 6-88) (ACI 530.1-88/ASCE 6-88)


Electric utilities are faced with the need to build new transmission lines or to upgrade existing lines to meet future demands. Because of economic constraints and the difficulty of obtaining rights-of-way for new transmission lines, upgrading of existing lines is becoming the most achievable option. In many cases, the cost for upgrading the foundations of a transmission line can be minimal. Utilities can now take advantage of the untapped load carrying capacity of the foundations built on the line to be upgraded. A suggested procedure for evaluating the load carrying capacities of foundations on a transmission line to be upgraded is given.

Subject Headings: Power transmission lines | Foundations | Load bearing capacity | Power transmission towers | Steel structures | Structural reliability | Load factors | Ultimate loads

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