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WATERPROOFING DIVISION     |   
Terra-Petra Terra-Petra

Methane Testing | Environmental Engineering

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Terra-Petra boots-on-the-ground for World Record Concrete Pour DTLA Wilshire Grand

20Feb2026

Terra-Petra had "boots on the ground" during the record breaking concrete pour for the new Wilshire Grand Hotel in Downtown Los Angeles – February 16, 2014. We were charged with the responsibility of performing the below grade waterproofing system inspections during this world record pour. We would like to thank Korean Air, General Contractor – Turner Construction, and the design team led by AC Martin for allowing us to be part of this historic occasion. 

IMG_00001440 IMG_00001447 IMG_00001421

February 20, 2026 AC Martin, below grade waterproofing, concrete pour, Environmental Engineering, Korean Air Wilshire Grand, los angeles, Terra-Petra, Turner Construction, world record Environmental Construction, Environmental Engineering, Environmental Health, Events, Los Angeles Economy, Uncategorized, Waterproofing
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Terra-Petra is an environmental engineering firm specializing in contaminated soil and groundwater conditions. Our expertise starts with soil gas characterization, remediation, and in the design and inspection of gas mitigation systems for buildings of all types.
 

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