JOC ARCHIVES

February 26, 2014

World record setting concrete pour in L.A.

LOS ANGELES

A Los Angeles construction project, which includes laying the foundation for the tallest building west of the Mississippi, has broken the world record for the largest continuous concrete pour, a Guinness World Records adjudicator said recently.

Round-the-clock pouring started at 4:47 p.m. Saturday with 208 trucks making more than 2,100 trips and pouring 82 million pounds of concrete during an 18 1/2-hour period, said Sean Rossall, a spokesman for the project building a skyscraper called the New Wilshire Grand.

Ultimately 21,200 cubic yards of concrete was poured by 11:30 a.m., beating the existing record of 21,000 cubic yards set by The Venetian hotel in Las Vegas in 1999, Guinness World Records adjudicator Michael Empric said.

“We just wrapped up, and we broke the world record,” said Rossall excitedly by phone minutes after blaring horns officially announced the last pour.

Empric monitored the pour overnight by smartphone before meeting with contractors and engineers Sunday to check their final numbers.

Empric, who had just finished judging a successful Valentine’s Day effort to set the record for the most people feeding each other simultaneously, said he has learned a lot about concrete and the challenges of such a pour.

“If they don’t cool the concrete as it’s poured, it’ll go into this thermal reaction and crack,” Empric said. He called the record amazing.

Each truck made 10 to 14 concrete drops travelling through the night between eight different concrete plants within a 20-mile radius, Rossall said.

The first batch of concrete poured on the site was brought over from a plant in Vernon., which performed the first-ever concrete pour in Southern California, Rossall said.

Once finished, the skyscraper will soar 1,100 feet, making it the tallest structure west of the Mississippi River.

It will boast a 900-room hotel, convention space and offices. There also will be an outdoor terrace and a swimming pool on the 73rd floor.

It’s scheduled to be completed in 2016 and to open in 2017.

“In LA I think people are enthused about downtown. They’re excited about this building. It means jobs, jobs, jobs,” Mayor Eric Garcetti told KABC-TV at a ceremony featuring the University of Southern California marching band.

He mused on Twitter whether the construction project should be dubbed “#pourzilla” or “#thegrandpour.”

The New Wilshire Grand project, developed by Korean Air, is estimated to cost more than $1 billion and has been a huge undertaking. For the past several months, crews have prepared the site by digging an 18-foot-deep pit and lining it with 7 million pounds of reinforcing steel.

They then added the concrete.

Because the concrete must be poured within 90 minutes of being mixed, trucks had to arrive on time. In case of freeway jams, alternate routes were mapped.

Rossall said traffic had a minimal impact on the pouring, which had been scheduled to last 20 hours.

Rossall said the crews “double-planned and triple-planned” to ensure no disruptions.

The concrete now must “cure” or set and harden over the next couple weeks.

“Once that’s completed, we’re going to start moving vertical on the building,” Rossall said. “That’s the next big milestone for us.”

THE ASSOCIATED PRESS

Print | Comment

MOST POPULAR STORIES
TODAY’S TOP CONSTRUCTION PROJECTS

These projects have been selected from 481 projects with a total value of $2,274,238,471 that Reed Construction Data Building Reports reported on Wednesday.

OIL SANDS

$100,000,000 Division No 16 AB Prebid

MUSEUM ADDN

$100,000,000 Victoria BC Prebid

CONDOMINIUM APARTMENT TOWERS, THEATRE, COMMERCIAL

$53,000,000 Surrey BC Prebid

Daily Top 10

TODAY’S TOP JOBS

Experienced Site Superintendent
Ontario-Cobourg

Project Manager
Ontario-Oshawa

Estimator
Ontario-Toronto

Site/Field Coordinator
Ontario-Mississauga

Superintendent
Alberta-Red Deer

Operations Foreman
British Columbia-Vancouver

Earthworks Estimator
Ontario-King

Junior Construction Manager
Alberta-Fort McMurray

Estimator/Project Manager
Ontario-Gormley

Machinist
Alberta-Edmonton

More jobs 

myJobsite.ca

Your gateway to
the top careers
in construction
and design