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Giving Credit Where it’s Due
To bring the impressive high rise structure to life, Vancouver-based A.J.’s Concrete Pumping was tasked with navigating a number of challenges that elevated the undertaking from ordinary to complex.
A.J.’s Concrete Pumping turns to Putzmeister to Take on Challenging Construction
STURTEVANT, WI (Feb. 8, 2019) – The $100 million regional office for First West Credit Union in Langley, British Columbia will be a welcome addition to a southwest Canadian city that takes pride in its tight-knit charm. To bring the impressive high rise structure to life, Vancouver-based A.J.’s Concrete Pumping was tasked with navigating a number of challenges that elevated the undertaking from ordinary to complex. From special setups and extended horizontal reaches to the need for lightweight outrigger support, proper equipment selection was of the utmost importance to meet the job site’s demands. That’s why A.J.’s called upon its reliable fleet of Putzmeister boom pumps to take on the project, with the 39Z-, 47Z-, and 56Z-Meter boom pumps brought into action.
The Site and Setup
The First West building is composed of slightly different linear forms that are bundled together to represent a cohesive collaboration. When the building is finished it will create a comfortable-yet-functional architectural statement that promotes pride of place and strength in unity. However, the building site demanded considerable problem solving from contractors.
Located on a corner lot in a busy downtown area, the layout meant restricted access and precise operation to maintain safety and quality. In addition, the site was located on a large deposit of blue clay soil, which creates a slippery and unpredictable base for equipment. Though contractors would typically build a temporary roadway of crushed rock for ready-mix trucks to deliver concrete to the pump, this solution was not a sustainable option due to the volume of concrete needed to finish the job. This temporary solution would only allow for 10-15 ready-mix trucks to drive across it before it would need to be rebuilt. This pour called for double the amount of trucks.
In order to save time on rebuilding a temporary roadway, contractors stationed a 39Z-meter on the perimeter of the job site accessible to ready-mix trucks. From there, the 39Z-meter pumped into a 47Z-meter located closer to the footings. On the other side of the site, a suspended slab was built to hold a 56Z-meter.
The setup of the three pumps made it easy for crews to reach all sides of the pour, and it prevented equipment from getting stuck in the mud created by the blue clay.
“The restricted site access made this a unique pour,” said Scott Sutherland, Operations Manager at A.J.’s Concrete Pumping. “Using our brand-new 39Z to pump into the 47Z got people excited.”
High Pressure, High Performance
The scope of the job required the entire footing for the new building to be pumped in one day. Crews worked steadily to pour more than 49,440 cubic feet (1,400m3) of concrete over an eight-hour span. In order to meet the deadline, A.J.’s Concrete brought a special piece of equipment from their fleet — the first of the new Putzmeister 39Z-meter boom pumps to be built in North America. The new high-pressured pump kept the job moving, delivering concrete through approximately 100 feet (30.5m) of slickline to the 47Z-meter. The slickline was secured with truss blocks and high-pressure clamps to ensure safety and smooth delivery.
The redesigned 39Z-meter boom pump features a .13 HPD Pump Cell designed to be the highest-performing, longest-lasting pump cell on the market with a rod side output up to 180 yards3/h (138m3/h), and rod side pressures of 1,233 PSI (85 bar).
“The performance of the new high-pressured pumping cell is amazing,” Sutherland said. “It delivers a smooth pour, even through hundreds of feet of slickline.”
Everything Has A Place
From muddy blue clay to space and weight restrictions, A.J.’s needed to choose equipment based on the site conditions. That’s why each pump was carefully selected for the restrictions of the job site.
“The general contractor specifically requested us to bring our 56Z for the light outrigger load and horizontal reach,” said Sutherland. “The 56Z was perfect for the job. It’s the only pump that was able to meet the weight restrictions for the suspended slab with maximum reach.”
The 47Z-meter was also chosen specifically for its outrigger configuration, but this unit was selected for its small footprint. It was the largest pump with an outrigger spread that was able to fit on the second specially created platform while still delivering as much reach as possible to cover all sides of the pour.
“The smaller footprint of the 47Z was important for the location on the job site,” said Sutherland. “The difference between the footprint of the 47 and the next largest pump is monumental when you’re on a congested job site.”
The pump was stationed in the center of the job site, where a temporary platform was created using six inch minus stone and large swamp pads to further stabilize the equipment.
The Finished Product
The First West Credit Union’s regional office is slated for completion in late 2020, and will be home to more than 320 employees. First West is said to occupy about half of the 130,000 square-foot (12,077.4m2) building to include office space, a fitness center, outdoor patio and better access to public transit. The rest of the building will feature retail and additional office space for lease.
As the building transitions from construction project to city landmark, stakeholders are confident it will live up to its original inspiration — an Aesop Fable dating back to 600 B.C. that spoke to the value of togetherness and cooperation: “this bundle of sticks you cannot break, take them singly, with ease, you may break as you please.”
A.J.’s Concrete Pumping finished pouring the footings for the six-story building in early January 2019, and is continuing through to the next phases of the building process. Sutherland says they plan to continue using Putzmeister to complete the pour because it's the most reliable equipment to use on a job site with so many conditions that need to be taken into consideration.
“Putzmeister’s compact outrigger configurations, versatile boom configurations, and low unfolding heights give us a competitive advantage in the Vancouver market,” said Sutherland. “This job would have not been possible without the quality and specifications of the Putzmeister equipment on site.”
Owner: First West Credit Union – Langley, BC
Developer: PCI Developments – Vancouver, BC
General Contractor: Etro Construction – Burnaby, BC
Ready-Mix Supplier: Rempel Bros. Concrete – Vancouver, BC
Concrete Placing Contractor: A.J.’s Concrete Pumping – Vancouver, BC
Equipment: Putzmeister 39Z-Meter Boom Pump, Putzmeister 47Z-Meter Boom Pump, Putzmeister 56Z-Meter Boom Pump
A.J.'s Concrete brought a special piece of equipment from their fleet for the job — the first of the new Putzmeister 39Z-meter boom pumps to be built in North America.
The 39Z-meter boom pump delivered concrete through approximately 100 feet (30.5m) of slickline to the 47Z-meter located in the center of the job site.
In order to reach the other side of the job site, a suspended slab was specially designed to hold a 56Z-meter boom pump. The pump offered the right amount of reach, while the outrigger load met weight requirements for the slab.
The site for the new building is on a large deposit of blue clay soil. The soil created an unpredictable base for setting up large equipment, requiring crews to build a temporary platform from six inch minus rock.
The First West Community Credit Union job site is located on a congested corner lot in a busy downtown area, which demanded precise operation to maintain safety and quality.
A.J.’s Concrete Pumping poured more than 49,440 cubic feet (1,400m3) of concrete over an eight-hour span.