Category Archives: ACI

ACI 347.2R-17

Guide for Shoring/Reshoring of Concrete Multistory Buildings

Published by: 2017-01-01 / 2017-01-01 / 28 pages
This guide presents information and design criteria for shoring/reshoring operations during the construction of reinforced and post-tensioned multistory buildings. Methods for developing safe construction practices, including sequencing and timing, as well as design examples, are provided. It is written for the use of formwork engineer/contractors and engineer/architects.

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ACI 121.1R-16

Guide to Quality Management Auditing in the Concrete

Published by: 2016-11-01 / 2016-11-01 / 72 pages
This guide provides the background and methods for conducting an audit of an organization’s quality management system. Such an audit can assess the organization’s commitment to quality management and conformance to standards, codes, and contract requirements. Audits can also identify portions of the quality management system that need correction or improvement.

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ACI 214RS-11

Guide to Evaluation of Strength Test Results of Concrete (Spanish)

Published by: / 34 pages
Statistical procedures provide valuable tools for evaluating the results of
concrete strength tests. Information derived from such procedures is valuable
in defining design criteria, specifications, and other parameters needed for
structural evaluation and repair. This guide discusses variations that occur
in concrete strength and presents statistical procedures useful in interpreting
these variations with respect to specified testing and criteria.
Keywords: coefficient of variation; concrete strength; normal distribution;
required overdesign; quality control; standard deviation; statistical methods

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ACI 345.1R-16

Guide for Maintenance of Concrete Bridge Members

Published by: 2016-09-01 / 2016-09-01 / 28 pages
This guide addresses typical problems and cost-effective maintenance techniques for highway bridges and their members, providing guidance to engineers and maintenance staff. Maintenance is crucial to a bridge’s lifespan and continued functionality, as well as to the public safety. Continuous and systematic maintenance of a bridge will extend its service life and reduce its overall operating cost.

Concrete bridge maintenance is defined as those activities that are relatively inexpensive and repeatable, performed when a concrete member is still in good to fair condition, and are intended to prevent or minimize deterioration of the concrete. These activities include sealing, washing, caulking, crack repair, and other minor repairs intended to prolong functionality of bridge members.

This guide does not cover major rehabilitation, reconstruction, or bridge inspection. Detailed methods of repairing and inspecting bridges are referenced wherever necessary throughout the guide relative to the subject matter.

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ACI 423.10R-16

Guide to Estimating Prestress Losses

Published by: 2016-08-01 / 2016-08-01 / 68 pages
This guide is intended for estimation of prestress losses in concrete structures. Methods presented include lump sum, simplified approaches addressing individual source of loss, and additional estimation methods. They address losses in pretensioned and post-tensioned members, including bonded, unbonded, and external tendons. Note that these estimation methods have not been evaluated for relative merits. A discussion of the variability of prestress losses caused by the variability in concrete properties is also presented. Several example problems are included.

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ACI 311.7-14

Inspection Services Specification for Cast- In-Place Concrete Construction

Published by: American Concrete Institute / 2014-06-01 / 9 pages
This Reference Specification covers quality assurance inspection services for preplacement, placement, and post-placement of cast-in-place concrete. This Reference Specification can be made applicable to any construction project by citing it in the inspection services contract. The specifier shall supplement the provisions of this Reference Specification as needed by specifying individual project requirements in the inspection services contract if so required.

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ACI 349-13

Code Requirements for Nuclear Safety-Related Concrete Structures (ACI 349-13) and Commentary

Published by: American Concrete Institute / 2014-06-01 / 200 pages
This standard covers the proper design and construction of concrete structures that form part of a nuclear power plant and that have nuclear safety-related functions, but does not cover concrete reactor vessels and concrete containment structures (as defined by Joint ACI-ASME Committee 359).

The structures covered by the Code include concrete structures inside and outside the containment system.

This Code may be referenced and applied subject to agreement between the owner and the Regulatory Authority.

All notation sections have been removed from the beginning of each chapter and consolidated into one list in Chapter 2.

The format of this Code is based on the “Building Code Requirements for Structural Concrete (ACI 318-08)” and incorporates recent revisions of that standard.

The commentary, which is presented after the Code, discusses some of the considerations of ACI Committee 349 in developing “Code Requirements for Nuclear Safety-Related Concrete Structures (ACI 349-13).” This information is provided in the commentary because the Code is written as a legal document and therefore cannot present background details or suggestions for carrying out its requirements.

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ACI 437.2M-13

Code Requirements for Load Testing of Existing Concrete Structures (ACI 437.2M-13) and Commentary

Published by: American Concrete Institute / 2014-05-01 / 25 pages
This code provides requirements for test load magnitudes, test protocols, and acceptance criteria for conducting a load test as a means of evaluating the safety and serviceability of concrete structural members and systems for existing buildings as provided for by ACI 562-13. A load test may be conducted as part of a structural evaluation to determine whether an existing building requires repair and rehabilitation, or to verify the adequacy of repair and rehabilitation measures applied to an existing building, or both. This code contains provisions for both a cyclic load test and a monotonic load test procedure.

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ACI 440.8M-13

Specification for Carbon and Glass Fiber-Reinforced Polymer Materials Made by Wet Layup for External Strengthen

Published by: American Concrete Institute / 2014-05-01 / 8 pages
This material specification covers the requirements for carbon and glass fiber-reinforced polymer (FRP) systems made by the wet layup process. These systems are externally bonded to concrete or masonry structures and intended for the structural strengthening of them.

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ACI 506.2M-13

Specification for Shotcrete

Published by: American Concrete Institute / 2014-05-01 / 16 pages
This specification contains the construction requirements for the application of shotcrete. Both wet- and dry-mixture shotcrete are addressed, as well as fiber-reinforced shotcrete. The minimum standard for materials, properties, testing, and application are covered.

The materials, processes, quality control measures, and inspections described in this specification should be tested, monitored, or performed as applicable only by individuals holding the appropriate ACI certifications or equivalent.

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