Changing Your View
There are changes at the WRI website. We have launched a new website to reflect WRI's extension of its educational mission. Watch for new podcasts, e-learning and more. Quicker links are available with Home Page buttons and menus and the entire site is now mobile-enabled. Visit again soon.
The Wire Reinforcement Institute (WRI) Education Foundation, has announced $8,250 in scholarships for three students pursuing engineering studies. This is the 13th year for the program, which has awarded in excess of $160,000 in scholarships since its inception. To read more information, click here:
From the WRI Chairman
Thanks for taking the time to read our e-newsletter. Congratulations to our newly-named scholarship winners. We are proud to support our up-and-coming engineers. Congratulations too, to our members. We have lots of exciting projects going on among them. We will be using their experiences to bring more technical education and information to current and future engineers.In the near future, you will see additions to our website around continuous learning, short case studies, and testimonials about such topics as Cast-In-Place. Drop into the site to see what's new and we always welcome your ideas.
The National Monument that Changed the Construction Industry
WRI attendees at World of Concrete this year are still talking about a presentation on the Hoover Dam and the more recent Hoover Dam Bypass Project, by Luke Snell. The Hoover Dam itself, built 1931-1935, brought to light many comfort and safety needs for such massive construction at the time. Snell said, "If you are a concrete person, the Hoover Dam is sacred grounds. Many advances in construction were done on this project. It provided work in a difficult time of our country."
Working conditions were deplorable by today's standards and there were 96 deaths not counting those related to heat. With the subsequent safety changes -- even hardhats first used during the building of Golden Gate Bridge that opened two years later -- we no longer see such tragedies.
Eventually, traffic outgrew the Hoover Dam road. To alleviate the growing traffic and travel safety issues, the Mike O'Callaghan-Pat Tillman Memorial Bridge opened in 2010. The bridge and its miles of approaches spanning the Colorado River between Arizona and Nevada, showcased the first concrete-steel composite arch bridge built in the U.S. This too was a massive, multi-year project.
Luke Snell, P.E., FACO. FASCE and senior materials engineer at Western Technologies, Phoenix, AZ, is also Emeritus Professor from Southern Illinois University. He has done extensive consulting work on construction and concrete problems throughout the U.S., Saudi Arabia, Mongolia and Algeria. Learn more about his fascinating, historical look into both of these subjects on DVD. Contact Luke.Snell@yahoo.com
Look for WRI at World of Concrete January 23 - 26, 2018, Westgate Las Vegas Resort.
From the Technical Desk:
WRI's WWR Detailing Guide for Practicing Structural Engineers is in its preliminary stages of development. With a focus on cast-in-place construction, the intent of the Guide is to help bridge the gap between the responsibilities of the specifying design professional and downstream WWR detailing services deployed by the fabricator/manufacturer. The goal is to ultimately promote a straightforward and confident approach to specifying WWR as a structural solution on the part of the designer. Read more about Cast-In-Place here.
Did You Know?
Welded "crossing bar" reinforcement intersections are only considered to be structurally acceptable if executed using an automatic electrical resistance welding process (such as that used in WWR production)? For a manual welding process, crossing bars are not cited as a weldable joint type in AWS D1.4. This speaks to the inherent repetitive control and reliability of machine-welded WWR.