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  • 07 Mar 2016 10:15 AM | Anonymous

    It has been my honor to represent the American Concrete Institute as its 92nd President during the past year. I have interacted with members from across the Institute and met people from around the world, and they all shared a vision for improving our infrastructure, and the overall quality of life, through the use of concrete.

    2015 was a very strong year for ACI, and I am pleased to share with you some key metrics:


    All of these achievements, and many others, are the result of countless hours from our volunteer members. Thank you for your interest in and commitment to the Institute.

    As a member of technical committees for more than 30 years, I was quite familiar with ACI’s reputation as a source of state-of-the-art technical information. The importance of providing unbiased technical information continues to increase with the development of new products and materials. ACI members continue to impress me with their commitment to vetting technical information thoroughly and developing comprehensive design standards to facilitate safe and reliable use of concrete.

    I have also been extremely impressed with the ongoing activities within ACI’s educational committees. ACI is moving from in-person seminars related to a single technical document to a suite of online educational options. This change allows concrete professionals to obtain the technical information that they need in a timely fashion and on a schedule that can be accommodated within their busy careers. By all reports, ACI University and the certificate programs have been extremely well received by ACI members, and I look forward to further expansion of options in this area.

    "ACI members continue to impress me with their commitment to vetting technical information thoroughly and developing comprehensive design standards to facilitate safe and reliable use of concrete."

    Perhaps the thing that surprised me the most was the passion exhibited by ACI members and Chapter members in the area of certification. A severe shortage of workers in the U.S. construction industry is projected within the next 10 years, but through its certification programs ACI is dedicated to ensuring that the concrete workforce of the future is well-trained and ready to move our industry forward. In addition, the development of country-specific certification programs has the potential to improve the quality of concrete construction worldwide.

    I would like to extend my sincere thanks to Past Presidents Jim Wight, Anne Ellis, and Bill Rushing. Each of you has served as a mentor for me. Your advice and insights have been instrumental to me during the past year. Vice Presidents Mike Schneider and Khaled Awad bring new ideas and insights to the executive committee, and I am confident that they will provide strong leadership of ACI. Finally, I want to thank all the ACI staff—an amazing group of dedicated professionals.

    Thanks again for this opportunity. I look forward to seeing many of you at the ACI Convention in Milwaukee, WI, this spring.

    Sharon L. Wood

    Sharon L. Wood

  • 18 Oct 2015 2:06 PM | Anonymous

    544.6R-15 Report on Design and Construction of Steel Fiber-Reinforced Concrete Elevated Slabs:

    This report addresses the methodology for analysis, design, and construction of steel FRC (SFRC) slabs supported on piles or columns (also called elevated SFRC [E-SFRC]). Sections of the report address the history, practice, applications, material testing, full-scale testing, and certifications.

    Construction of slabs in areas with weak soil conditions has commonly used pile-supported slab structural design so that the adverse effects of soil-structure interaction in terms of differential settlement, cracking, or long-term serviceability problems are avoided. In this application, the construction of slabs on closely spaced pile caps (typical span-depth ratios between 8 and 30) is referred to as elevated ground slabs (EGSs). These slabs may be subjected to moderately high loading, such as concentrated point loading of up to 44 kip (150 kN) and uniformly distributed loadings of 1000 lb/ft2 (50 kN/m2). The dynamic loadings may be due to moving loads such as forklifts, travel lifts, and other material handling equipment. Fiber-reinforced concrete (FRC) has been successfully used to address the structural design of these slabs. Based on the knowledge gained, the area has been extended to a construction practice for slabs supported by columns as well. Applications are further extended to multi-story building applications. This report addresses the methodology for analysis, design, and construction of steel FRC (SFRC) slabs supported on piles or columns (also called elevated SFRC [E-SFRC]). Sections of the report address the history, practice, applications, material testing, full-scale testing, and certifications. By compiling the practice and knowledge in the analysis design with FRC materials, the steps in the design approach based on ultimate strength approach using two-way slab mechanisms are presented. The behavior of a two-way system may not require the flexural strength of conventional reinforced concrete (RC) because of redistribution, redundancy, and failure mechanisms. Methods of construction, curing, and full-scale testing of slabs are also presented. A high dosage of deformed steel fibers (85 to 170 lb/yd3 [50 to 100 kg/m3]) is recommended as the primary method of reinforcement. Procedures for obtaining material properties from round panel tests and flexural tests are addressed, and finite element models for structural analysis of the slabs are discussed. Results of several full-scale testing procedures that are used for validation of the methods proposed are also presented.

    Order online by clicking on this link: https://www.concrete.org/store/productdetail.aspx?ItemID=544615&TabId=977&utm_campaign=544615&utm_medium=email&utm_source=header&language=en-US

  • 14 Oct 2015 3:17 PM | Anonymous

    Please join other industry professionals for the Bi-Annual Concrete Convention and Expo in Denver, Colorado November 7-12th, 2015.  Registration is online with an early bird discount through October 11th.  After that date and on site, the cost will increase $100.  For the First time there will be an Excellence in Concrete Award banquet representing the winning projects from around the globe for 2015.  There will also be a Concrete Sustainability Forum on Wednesday, November 11th where Global experts will update attendees on new, innovative technologies, sustainability assessment systems, and sustainable design from around the world.  You won't want to miss this Free Forum when you attend the Convention.  Click on the link below to be directed to the ACI Home Page:

     

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