A 19-story building under construction in San Jose, Calif., will be the second in the country to be built with a concrete-filled composite plate shear wall system, which was first used successfully two years ago for construction of the 58-story Rainer Square tower in Seattle.
Level 10 Construction is the general contractor on the San Jose project, known locally as 200 Park, a Class A office building that, when it’s completed in May 2023, will have 937,000 sf that include 26,000 sf of outdoor terraces. The building’s owner, Jay Paul Company, is targeting LEED Gold certification. When it’s completed, 200 Park will be San Jose’s tallest office tower.
200 Park Conceptual Structural Steel Sequence from Level 10 Construction on Vimeo.
The wall system, known as Speed Core, is expected to reduce the construction time for 200 Park by three months, according to Kevin Englund, Level 10’s Partner and Vice President. Level 10 started construction on this project in March, and the Speed Core portion should be completed next year.
The building team on this project includes Gensler (architect), and Magnusson Klemencic Associates (SE and CE), which has been Speed Core’s biggest advocate. MKA was part of the project team that completed Rainer Square tower’s core nine months ahead of schedule.
200 Park in San Jose, Calif., will have 937,000 of rentable square footage, and 26,000 sf of outdoor terraces (below). Images: Jay Paul Company
FASTER AND SAFER CONSTRUCTION
The SpeedCore system relies on two steel plates connected with steel cross ties, which are then filled with high-strength concrete. (For the San Jose project, the steel section is filled with 10,000-psi grout for the structural core.) The modular nature of these prefabricated “sandwich” panels allows for faster erection speed, since the system provides stability without requiring traditional rebar reinforcing or the temporary formwork of a typical concrete core, and progress is not dependent on concrete curing times.
Also see: 3D conceptual video of the structural steel sequence
Also see: The American Institute of Steel Construction’s profile of Speed Core
Off-site, Schuff Steel fabricated the panels for 200 Park, which weigh up to 12.5 tons, and then shipped the panels to the construction site.
As described in a 3D conceptual video of Speed Core’s steel structure sequence that Level 10 posted, stanchions are embedded in concrete shear walls and the floor slab is cast. Below-grade wall panels are erected and welded into place. Grade-level seismic struts are installed. Grade-level slab is cast and the erection proceeds. Speed Core wall panels carry up to eight floors of steel prior to concrete.
200 Park Avenue Mock-Up Installation from Level 10 Construction on Vimeo.
The average floorplate at 200 Park will be 54,000 sf. Image: Jay Paul Company
Related Stories
Sponsored | Steel Buildings | May 4, 2016
Family business brews up a unique building
Winter Construction is part of the Star family, and their new 8300 sf brewery and tasting room is a Star Building System.
Sponsored | Steel Buildings | Apr 19, 2016
Where is the steel line?
Not having a complete understanding of what the steel line is can affect the building process, causing delays and problems, writes Kenny Stoner
Steel Buildings | Apr 4, 2016
AISI publishes Cold-Formed Steel Framing Design Guide, 2016 Edition
Updates 2007 edition; includes five comprehensive design examples.
High-rise Construction | Mar 28, 2016
SOM’s Salt Lake City skyscraper uses innovative structural system to suspend itself over a neighboring building
The hat truss-supported office tower was topped off in January, rising 25 stories above the Salt Lake City streets.
Steel Buildings | Oct 23, 2015
2016 AISC Code of Standard Practice available for public review
American Institute of Steel Construction seeks input on standard update.
Structural Materials | Mar 30, 2015
12 projects earn structural steel industry's top building award
Calatrava's soaring Innovation Science and Technology Building at Florida Polytechnic University is among the 12 projects honored by the American Institute of Steel Construction in the 2015 IDEAS² awards competition.
Sponsored | Walls and Partitions | Mar 25, 2015
Metl-Span systems meet design needs in cost effective manner
The goal from the beginning was to construct an energy efficient building with insulated metal panels.
Building Materials | Feb 19, 2015
Prices for construction materials fall in January, following plummet of oil prices
The decline in oil and petroleum prices finally showed up in the produce price index data, according to ABC Chief Economist Anirban Basu.
Codes and Standards | Feb 18, 2015
Buildings with rocking steel-braced frames are advantageous in earthquakes
Research at Case Western Reserve University has found that buildings that rock during an earthquake and return to plumb would withstand seismic shaking better than structural designs commonly used today in vulnerable zones of California and elsewhere.
Steel Buildings | Feb 10, 2015
Korean researchers discover 'super steel'
The new alloy makes steel as strong as titanium.