ICC-ES AC Interim Criteria for Inspection and Verification of Concrete and Reinforced and Unreinforced Masonry Strengthening Using Fiber-reinforced. Accordance with. ICC-ES AC ADVANTAGES. DESCRIPTION/SUGGESTED SPECIFICATIONS*. The % epoxy resin and hardener are completely mixed. As such, Hilti maintains ICC-ES evaluation reports for adhesive anchors in concrete according to AC and in masonry according to AC I hope I have.

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American Society for Testing and Materials. Hamilton Hydro-Electric System Specifications. Deutsches Institut fur Normung e. Adhesive anchor design provisions for tension were the only provisions supplemented, necessitating new checks for concrete bond stress.

Muncipal Engineers Association of Ontario.

AC – ICC Evaluation Service, LLC (ICC-ES)

National Asphalt Pavement Association. As of 15 Januarythe following will be required: This requirement is recognition by the ACI Code committee that adhesive anchor installation needed some oversight qualifications to achieve satisfactory installations, consistent with the written design requirements and anchor manufacturer installation instructions.

Institute of Transportation Engineers. In Figure acc308, the undercutting of the threads in the concrete is illustrated. Pullout failures look very much like bond failures for adhesively bonded anchors. The creation of the threads in the concrete gives the screw anchor some advantage in cracked concrete where a small-narrow crack intersecting the threads has only a minor reduction on tension capacity.

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Infraguide of Best Practices.

Florida Concrete and Products Association. Neal may be reached at nsanderson sgh. But unlike other chapters in the re-organized Code, Chapter 17 essentially remained an untouched clone of Appendix D. Organisation for Economic Co-operation and Development. Canadian Acts and Regulations.

To provide the mechanical interlock to the concrete, the screw anchor cuts a thread into the concrete during the installation process. Although the design procedure for screw anchors has not been codified, they are gaining acceptance in building practice as a reliable icc-ees element Olsen, et. First Name Last Name. As of 15 Januarythe following actions were taken: In ArticlesInSights Comments 0.

AC308 – Post-installed Adhesive Anchors in Concrete Elements

In addition to installer certification, inspection is an important requirement required in ACI They are intended to carry direct tension, direct shear, or combinations of tension and shear loadings. Deep embedments are often difficult to achieve because the ac30 of cutting a thread can exceed the torsional capacity of the screw shank and fail the steel in torsion.

Strategic Highway Research Program.

Certification was deemed an important component of adhesive anchor usage, on par with certified welders for welding key structural steel connections. The ACI Code provisions are not mandatory unless adopted by the local building code for the given jurisdiction.

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The Present State of the Industry Formal concrete anchorage design provisions first appeared in ACI as Appendix D, with applications limited to cast-in-place anchors and post-installed mechanical expansion anchors. In reality, screw anchors have been around since the early s. National Fire Protection Association. In the next Code cycle, screw anchors will be studied for inclusion.

This was a conscientious decision by the Code Committee at the beginning of the reorganization work, because: Ministere des transports du Quebec MTQ. Undercutting of screw threads in concrete from Olsen, et. Research testing of screw anchors has shown that failure can occur in tension via three modes: Leave a Comment Click here to cancel reply. California Department of Transportation. Canadian Council of Independent Laboratories. Society of Automotive Engineers.

Standards of accredited organizations or other agencies. American Iron and Steel Institute. Design Provisions Adhesive anchors were incorporated into ACI under the premise that the existing design models would be minimally affected. Ontario Statutes, Regulations, etc.