Wilshire Grand Center

In 2014, the Wilshire Grand Tower was the site of the world’s largest continuous concrete pour. CTLGroup played a vital role in the oversight and engineering of the “Grand Pour,” which was certified as a record by the Guinness Book of World Records.

The Wilshire Grand Tower’s foundation pour consisted of a total of 21,200 cubic yards of concrete over 18.5 hours using 19 separate pumps feeding 13 hoses to fill the site with roughly 82 million pounds of concrete.

CTLGroup engineered a cooling pipe system that internally cooled the foundation to ensure that it was below 160°F during curing and kept the temperature difference below a limit that was specifically engineered for the placement.

CTLGroup’s cooling pipe system reduced the temperature in the foundation to near-ambient conditions within 10 days and was carefully engineered to avoid precooling of the concrete. The cooling process would have taken up to 100 days if the cooling pipes were not used.

Markets

Materials & Products

Consulting Services

Concrete Construction Troubleshooting

Concrete Mixture Development & Qualification

Project Specification Review & Development

Mass Concrete & Thermal Control

Rheology, Pumpability, and Constructability

Materials Science + Engineering

Laboratory Services

Concrete + Cement-Based Materials

It took 2,120 truckloads of concrete to fill the 18 foot-thick foundation of the Wilshire Grand Center. This pour took place in less than a 30-hour span without interruption.

2015

Year of Completion

348

Hours Worked

82 M

Pounds of Concrete Used

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