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
| Nov 13, 2013
New AISC Guide for Stability Design of Steel Buildings Now Available
Design professionals now have a valuable new resource on practical applications for stability design
| Nov 4, 2013
Historic shape producer catalogs added to AISC ePubs
The American Institute of Steel Construction (AISC) has added more historic documents to its online ePubs collection for AISC members. The latest addition is a collection of shape producer catalogs dating back to 1885. The collection is available at www.aisc.org/epubs in the historic shape producer section. This collection is part of AISC's effort to preserve unique industry documents before they are lost to age-related deterioration.
| Oct 25, 2013
California struggles with updated seismic codes
In California, there are still hundreds of concrete buildings that need reinforcement to bring them up to the new seismic code.
| Oct 22, 2013
World's tallest twisting tower added to Dubai skyline [slideshow]
The 75-story residential building, designed by SOM, features a dramatically rising helix shape for a distinctive addition to the city’s skyline.
| Oct 18, 2013
Researchers discover tension-fusing properties of metal
When a group of MIT researchers recently discovered that stress can cause metal alloy to fuse rather than break apart, they assumed it must be a mistake. It wasn't. The surprising finding could lead to self-healing materials that repair early damage before it has a chance to spread.
| Oct 9, 2013
SOM gets second crack at iconic modernist structure in New York
More than 50 years after SOM completed the Manufacturers Hanover Trust building, the firm is asked to restore and modernize the space.
| Oct 7, 2013
Progressive steel joist and metal decking design [AIA course]
This three-part course takes a building owner’s perspective on the range of cost and performance improvements that are possible when using a more design-analytical and collaborative approach to steel joist and metal decking construction.
| Oct 3, 2013
125 events expected nationwide for fifth annual SteelDay, Oct. 4
Where will you be on SteelDay this year? Whether you visit a structural steel facility, tour a job site or attend a seminar, join the structural steel industry's largest educational and networking function as it returns for a fifth successive year on October 4, 2013.
| Oct 1, 2013
13 structural steel buildings that dazzle
The Barclays Center arena in Brooklyn and the NASCAR Hall of Fame in Charlotte, N.C., are among projects named 2013 IDEAS2 winners by the American Institute of Steel Construction.
| Sep 18, 2013
Annual SteelDay to include 125 free events around the U.S.
Hosted by the American Institute of Steel Construction (AISC), its members and partners, SteelDay invites the AEC community and the public to see the contributions the industry has made in the design and construction of steel buildings and bridges.
