Concrete Products

APR 2014

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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Page 17 of 51

16 • April 2014 Occupying the site of a hotel that hosted guests from Pope John Paul II and Ronald Rea- gan to John F. Kennedy and U.S. Chief Justice Earl Warren, the Wilshire Grand Center is rising on sound footing thanks to a Guinness Book of World Records-grade concrete placement. Catalina Pacifc Concrete delivered 2,120 loads of ready mixed over a 19-hour, mid-Feb- ruary window for the 73-story hotel's mat foundation. The fagship concrete business of Glendora Calif.-based CalPortland Co. mustered 208 mixer trucks and 235 drivers across fve of its own and three A&A Ready Mixed Concrete plants, four to 20 miles from the downtown Los Angeles site. Executed without a single in- jury, the operation marked what project off- cials note is a new volume threshold for a con- tinuous foundation pour: 21,200 yd., slightly besting a 1999 record set for The Venetian, Las Vegas. "A typical sequenced pour on a similar project would occur over weeks. With a con- tinuous pour, we saved time, and because we poured at once, rather than in segments, we were able to create an incredibly strong foun- dation for this iconic tower," says Scott Bor- land, vice president in the Los Angeles offce of general contractor Turner Construction. NEWS SCOPE BY DON MARSH Catalina Pacific deploys eight plants, 200+ trucks for record 21,000-yd. pour Gauging the heat of hydration in a concrete mat at least 18 feet—even with a 25 percent fy ash binder component—engineers specifed plastic piping to circulate chilled water through the mass concrete supporting the new Wilshire Grand Center. PHOTOS: CalPortland Co. Concrete Products April 2014.indd 16 4/1/2014 11:38:42 AM

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