Rising to the Top with Trump Las Vegas – Tower 1
Rising to the Top with Trump Las Vegas – Tower 1Putzmeister America, Inc. Reaches New Heights with the Tallest Structure in Nevada
STURTEVANT, WI (February 1, 2007) – Donald Trump’s inaugural Las Vegas construction project will be nothing less than his larger than life image. Climbing past other hotels and casinos in Las Vegas for a completion height of 620 ft., Trump International Hotel & Tower – Tower 1, will be the tallest inhabitable concrete structure in Nevada.
First announced in 2002 and started on August 31, 2005, the luxury residential hotel condominium tower is modeled after the Trump International Hotel & Tower, a Trump renovation on New York City’s Columbus Circle.
The height of this spectacular Las Vegas project inspired the general contractor, Perini Building Co., to explore new ways of placing concrete on each floor as the building grows. According to Project Manager Tony Meyer, his crew had to deviate from their conventional placing method that involves using concrete-deck buckets for the majority of the project to raise the concrete to higher and higher floors. Meyer says, “Hauling buckets up 620 ft. the way we usually do would not allow us to work as efficiently as with a placing boom and we needed to get the job done on time and right the first time.”
Perini found the ideal solution with Quinn Concrete Pumping’s Putzmeister MXR 34/38Z Series II Detach Boom and a Putzmeister BSA 14000 Trailer Pump.
The decision to sub-contract the concrete placement was new for Perini, who has been in business for over 100 years and has always handled its own concrete placement.
At the beginning of the project, concrete-deck buckets were used to place the concrete on lower-level floors and other sections of the structure. Now, the MXR 34/38Z and BSA 14000 are pumping and placing the concrete for the structure. This system frees up the cranes on the job site to complete other tasks.
“We felt confident choosing Quinn Concrete Pumping to take on this project because we have used their concrete pumps for years,” comments Meyer. “Using Putzmeister equipment on the job site gave us a greater level of comfort. They manufacture a pump we understand and know what to expect in terms of performance.”
The powerful BSA 14000 features the highest pressures and outputs available on the market today to provide maximum volume at the greatest distances. Operations Manager for Quinn Concrete Pumping, Steve Heimark, says the BSA 14000 remains in one spot for the entirety of the job, on the ground at the base of the site, about 40-50 yds. from the structure. A road in front of the job site leads the ready mix trucks to the BSA 14000 where they continually deliver the concrete to the trailer pump.
Slickline then carries concrete from the BSA 14000 up through the clamped-down base and 20 ft. of Putzmeister tower to the MXR 34/38Z placing boom. The stationary tower is located inside the structure’s own center core form, an elevator shaft, which is its own self-climbing system.
As the floors of the Trump Las Vegas project are too large to pour from a single location, Quinn has mounted two towers for the MXR 34/38Z; one on each side of the structure. When the crew needs to pour on the other side of the structure, a crane flies the detach boom and its pedestal from one tower to the other for a quick pin-connect.
“The ability for us to connect the boom simply with pins as opposed to bolts not only makes the transfer process faster, it helps us improve safety,” says Heimark. “We can easily move the boom and be ready to pump again in about 15 to 20 minutes.”
“The Putzmeister MXR 34/38Z placing system with its convenient pin-connect pedestal used in tandem with a Putzmeister BSA 14000 is a great solution to this project’s height factor,” according to Perini’s Project Superintendent, Guy Shuman. “It eliminates wrestling with buckets at these extreme heights and promotes worker safety at the same time.”
A post-tension concrete structure, the Trump property contains a minimal amount of steel. Shuman and Heimark both note that this type of building is very common in the Las Vegas area and is a very economical and stable type of building.
“We are pumping Nevada’s notorious harsh mix specified for this project” says Heimark. “This type of mix is very abrasive, with very coarse aggregates, and manufactured sand which makes it a very tough mix to pump.” He added “We’ve pumped a total of 42,000 cu. yds. of concrete with the BSA 14000 so far, with 1,300 cu. yds. for each floor. The powerful 630 hp engine and reliable closed loop free flow hydraulic system provides smooth pumping on each pour.”
According to Steve Wild, the Sales Manager for Rinker Materials, the ready mix concrete supplier, this project requires a mix in the range of 4,500 – 10,000 psi.
When asked why this mix was specified for the project, Meyer says, “Because of the height of the building, the vertical elements require a higher strength mix to support a lot of weight.”
The Structural Engineer for this project, Greg Clapp, Principal of John A. Martin & Associates of Nevada agrees with Meyer and adds, “The strength of the concrete was specified to reduce the column sizes as much as possible to create more room space. The high strength concrete was also required for the shear walls, which provide lateral resistance to seismic and wind loads.”
“The psi decreases as we progress higher in the tower because those higher floors support less weight,” Meyer notes.
There is also an admixture in some of the concrete mix designs according to Meyer; used to attain high early strength in the concrete. This admixture, for the most part, is only used in the horizontal concrete deck placements of the structure. Meyer says that there is an accelerant in the admixture that allows the concrete, once placed on each floor, to reach its strength requirements within three days, instead of the normal seven days.
“This quick turn-around time keeps the sequence of the project rolling,” Meyer says. “Once the strength requirements of the concrete are reached, the form supporting that floor can be removed and used to set up the next floor.”
Pours for the deck and half of the vertical elements of the structure begin every Thursday at midnight and complete Thursday afternoon. The crew then comes back to the job site to complete the remaining half of the vertical elements the following Friday. Once a pour is complete, preparation for the next floor begins. Two levels of deck forms are being used on the project to allow for the necessary rotation of formwork to maintain the schedule.
When complete, Trump International Hotel & Tower – Tower 1 will comprise a total of 64 floors. To date, Quinn has placed concrete up to the 45th floor. “The project will take another six months to complete,” notes Shuman. “The goal is to pour one floor each week. The workers have a great rhythm going. It’s not very often that you have a chance to work on the tallest concrete building in the state.”
According to Heimark, there weren’t any real challenges other than devising the solution to deliver the concrete 620 ft. off the ground. “Everything is running smoothly,” he says. “This is due in large part to the planning that was performed by Perini from the very beginning.”
In true Trump style, the Trump International Hotel & Tower – Tower 1, is of course not just another hotel, but is made up of plush condo units. Meyer refers to this lavish feature of the tower as a “hybrid” of sorts for the Las Vegas area.
Prices at the Trump International Hotel & Tower Las Vegas range from the $700,000s to $7 million. Buyers can live in the unit full time or part time, rent it out themselves, rent it through Trump hotel operations or use an outside property management company.
The building also includes a 467-space, five-level parking structure that is for
valet and employee parking. The parking structure is located above the main lobby and below the guestroom floors, floors two through six. The extravagant structure has 24K gold tinted glass with an entry Porte Cochere of white marble and brass accents. It will be located next to Wynn Las Vegas and adjacent to the Fashion Show Mall.
Trump-Ruffin, LLC will not be checking out of Las Vegas anytime soon. The Trump International Hotel & Tower – Tower 2 project was already announced in January 2005 and will be identical to the first tower. The start and completion dates for Tower 2 are not yet determined.