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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, dissemination, and adoption of its 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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The strength of existing concrete buildings and structures can be evaluated analytically and supplemented where necessary with load testing. The recommendations in this report indicate when such an evaluation may be needed, establish criteria for selecting the evaluation method, and indicate the data and background information necessary for an evaluation. Methods of determining material properties used in the analytical and load test investigations are described in detail. Analytical investigations should follow the principles of strength design. Working stress analysis can supplement the analytical investigations by relating the actual state of stress in structural components to the observed conditions.
The Collection Online includes all new committee standards and reports released throughout the year. The most recently added include:
439.5R-18 Guide for the Specification, Manufacture, and Construction Use of Welded Wire Reinforcement
216.1M-14(19) Code Requirements for Determining Fire Resistance of Concrete and Masonry Construction Assemblies (SI Units)
225R-19 Guide to the Selection and Use of Hydraulic Cements
550.6-19 Acceptance Criteria for Special Unbonded Post-Tensioned Precast Structural Walls Based on Validation Testing and Commentary
550.6M-19 Acceptance Criteria for Special Unbonded Post-Tensioned Precast Structural Walls Based on Validation Testing and Commentary (SI Units)
548.8M-19 Specification for Type EM (Epoxy Multi-Layer) Polymer Overlay for Bridge and Parking Garage Decks (SI units)
563M-18 Specifications for Repair of Concrete in Buildings (SI units)
562M-19 Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures and Commentary (SI units)
506.4R-19 Guide for the Evaluation of Shotcrete
526R-19 Guide for Design and Construction with Autoclaved Aerated Concrete Panels