This presentation aims at providing clear and down to earth definitions of what Post-Tensioning systems are, the different repair strategies related to these systems, and critical factors to be accounted for during the design and execution of any intervention on a Post-Tensioning slab.
Panel Discussion to examine the effects of and responses to the COVID-19 pandemic across the various aspects of our industry and in the different parts of Canada.
This 60-minute session will be comprised of a 10-15 minute introduction to ACI 562, followed by a 45-minute discussion by a moderated panel of various experienced stakeholders in the concrete repair industry, including Specifiers, Contractors, Manufacturer/Distributors, and Owners.
Module 1 covers the introduction to the program and discusses the definition of reinforced concrete and common types of reinforced concrete deterioration, focusing on deterioration resulting from embedded metal corrosion and its effect on existing structures. The process leading to reinforcing steel corrosion is further discussed, including the effects of chlorides, carbonation and access to the reinforcing steel (including cracks and joints, low quality concrete, and reduced concrete cover).
This video will illustrate an example of how various sections of ACI 562 are applied in the execution of a complex repair project, the repurposing of a historic train deck into a transportation hub for light rail trains and busses. Methods of evaluation and analysis, as guided by ACI 562, will be presented with a discussion of how these provisions lead to various repair approaches presented to the owner.
The ACI 562-16 Repair Code is primarily intended for the Licensed Design Professional for providing the requirements necessary for assessing and designing repairs and rehabilitation of existing concrete structures.
In June 2016, ACI published ACI 562-16,” Code Requirements for Assessment, Repair and Rehabilitation of Existing Concrete Structures and Commentary”. ACI 562-16 replaces ACI 562-13 as a standard for the repair of existing concrete structures. Significant changes to ACI 562-16 include improvements in terminology for consistency with ISO, ASCE and other documents, inclusion of requirements for level of repair based upon extent of damage present, and revisions to the interface bond provisions. The video will describe the concrete repair code, focusing on key changes made to the code and describe how the code is to be used on concrete repair projects.
Presentation will discuss Vision 2020 (Development, Successes and Challenges) as well as items which still need to be completed. This portion of the presentation will be followed by an overview of the presenter's perspective on the future needs for the concrete repair industry. All attendees will be invited to participate in a workshop to develop a complete list of industry needs (consensus if possible).
This video will discuss how the requirements of ACI 562-16 are used in the evaluation and repair of parking structures. It will take participants through a representative garage project, utilizing Design Example 1 from the Guide to the Use of ACI 562 as the basis. Evaluation and design considerations will be discussed relative to the Repair Code as well as QA/QC and the Engineers' Role during construction.