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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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This report examines the benefits of the design of concrete towers for land-based wind turbines with heights in excess of 325 ft (100 m), in comparison to those of round steel tubular towers. These benefits include reduced cost, increased stiffness, and superior service life performance. Construction alternatives, design criteria, design methodologies, and guidance for preliminary design of concrete towers are presented.
The report recognizes that final tower design requires close coordination with the turbine supplier. The report is intended for those involved in developing preliminary tower designs. Concrete towers designed for maximum wind forces can be satisfactory for preliminary design, but the final design requires checking for all loads, especially fatigue and dynamic effects from wind and turbine operations. Design of connections and their proportions require an understanding of fatigue requirements during preliminary design for the connection design to remain valid during final checks.
The MCP Online contains all new committee standards and reports released throughout the year. The most recently added include:
304.2R-17 Guide to Placing Concrete by Pumping Methods
131.2R-17 Guide to Use of Industry Foundation Classes in Exchange of Reinforcement Models
369.1-17 Standard Requirements for Seismic Evaluation and Retrofit of Existing Concrete Buildings
207.6R-17 Report on the Erosion of Concrete in Hydraulic Structures
365.1R-17 Report on Service Life Prediction
233R-17 Guide to the Use of Slag Cement in Concrete and Mortar
550.1R-09(17) Guide to Emulating Cast-in-Place Detailing for Seismic Design of Precast Concrete Structures
439.4R-09(17) Report on Steel Reinforcement—Material Properties and U.S. Availability
549.3R-09(17) Report on Glass Fiber-Reinforced Concrete Premix
423.3R-17 Recommendations for Concrete Members Prestressed with Single-Strand Unbonded Tendons