System Pumps and Places 12,000 cu. yds. for 50-story Tower

Created: January 3, 2012

The 1.7 million-sq.-ft. Devon World Headquarters Tower calls for an estimated 120,000 cu. yds. of concrete

C&C enlisted a MX 34/38Z placing boom with lattice tower for the project.
C&C enlisted a MX 34/38Z placing boom with lattice tower for the project.
Rising 850 ft. above downtown Oklahoma City, OK, is the Devon World Headquarters Tower, which is expected to be the tallest building in the state once complete.
Rising 850 ft. above downtown Oklahoma City, OK, is the Devon World Headquarters Tower, which is expected to be the tallest building in the state once complete.
On the roof of the building, C&C installed a 40-ft. lattice tower and cross-base by clamping it directly to the concrete floor it sat on.
On the roof of the building, C&C installed a 40-ft. lattice tower and cross-base by clamping it directly to the concrete floor it sat on.
C&C Concrete Pumping enlisted two of its BSA 14000 HP-D 8-in. trailer pumps and one Thom-Katt TK 50 high pressure shotcrete/concrete pump to pump the 120,000 cu. yds. of concrete for the project.
C&C Concrete Pumping enlisted two of its BSA 14000 HP-D 8-in. trailer pumps and one Thom-Katt TK 50 high pressure shotcrete/concrete pump to pump the 120,000 cu. yds. of concrete for the project.

With the BSA's closed-loop free-flow hydraulics, C&C was able to provide a smoother and more controllable pumping method in the varying weather conditions on the site. "As part of the free-flow hydraulics design, the pump has a fully adjustable volume control to allow for very slow pumping while retaining full concrete pressure of 3,190 psi," notes Jovanny Cabral, general manager for the C&C Dallas, TX, branch.

The TK 50, featuring a 96-hp Deutz TCD2012L04m engine, averaged outputs up to 10 cu. yds. per hour of the harsh mix throughout the project.

"Able to pump up to 54 cu. yds. per hour at 1,150 psi, the TK 50 features a gradual reduction from hard-chromed material cylinders to the outlet, providing an even flow of material, and ultimately providing us longer life of the pump," says Cabral. "As an added bonus, the pump's angled hopper is easy to fill, clean and maintain, which helped us stay on track with the job's aggressive pour schedule."

C&C's four-arm Multi-Z placing boom placed the concrete precisely with no delay. "Capable of reaching up to 108 ft. 7 in. horizontally and 116 ft. 4 in. vertically, we never had to worry that it wouldn't be able to reach the exact point of placement," says Papito Saavedra, the head of placing boom operations for C&C for the project.