WILSHIRE GRAND CENTER 900 Wilshire Blvd., Los Angeles, CA

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CASE STUDY: FLEXIBILITY WILSHIRE GRAND CENTER 900 Wilshire Blvd., Los Angeles, CA Completed: 2017 Project Height: 1,100 ft. Project Cost: $1.2 billion Completed: 2016 Architect: Handel Architects Architect: AC Martin Partners Project Size: 71,500 sq. ft. Project Owner: Trumark Urban Project Owner: Hanjin Group Project Cost: $60 million TAKING LOS ANGELES TO NEW HEIGHTS The new Wilshire Grand Center is the tallest building not only in Los Angeles, but west of the Mississippi River. The property is stacked too – with a hotel, retail space, observation decks, shopping malls and an office complex. It’s no wonder the Wilshire Grand Center is expected to completely revitalize downtown Los Angeles. 01. A record-breaking amount of concrete. 21,600 cubic yards of concrete was poured over the course of 20 hours, creating an 18-foot thick foundation. This broke the Guinness World Record previously set in 1999 during the construction of the Venetian Hotel in Las Vegas (21,000 cubic yards). 02. Earthquake safe. The building’s design underwent the most sophisticated earthquake modeling to be performed on a structure in the history of Southern California. 03. Unique concrete core. The building’s design called for large windows in every room. This created a challenge for engineers building the structure’s core. To fulfill this challenge, the concrete core decreases in size on the building’s upper floors, measuring just 33 feet at its narrowest part. 04. Giving the lights of Tinsel Town a run for their money. The spire and entire exterior of the tower were filled with programmable LED lights. This allows advertisements and other light shows to be displayed on the structure. A Coalition of the National Ready Mixed Concrete Association | BuildWithStrength.com.

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THURSDAY, AUGUST 17, 2017 BUSINESS US housing construction slumped in July WASHINGTON: US homebuilding unexpectedly fell in homebuilder, D R Horton, were little changed as July as the construction of multi-family houses tum- were those of Lennar Corp Pultegroup shares bled to a 10-month low, but strong job growth is gained 0.31 percent. The dollar strengthened expected to continue to support the housing market against a basket of currencies and prices for US gov- recovery. Housing starts declined 4.8 percent to a sea- ernment bonds rose marginally. sonally adjusted annual rate of 1.16 million units, hurt also by a drop in groundbreaking on single-family Modest growth projects, the Commerce Department said yesterday. A separate report yesterday from the Mortgage June’s sales pace was revised down to 1.21 million Bankers Association showed applications for home units from the previously reported 1.22 million units. loans fell last week. Single-family homebuilding, Building permits dropped 4.1 percent, with the mul- which accounts for the largest share of the housing ti-family segment recording a drop of 11.2 percent. market, slipped 0.5 percent to a rate of 856,000 units Permits for single-family homes were unchanged. last month. Single-family starts rose in the Northeast The report tempered hopes of a sharp rebound in and South but fell in the West and Midwest. homebuilding investment after it fell in the second “We expect residential investment to keep moving quarter at its steepest pace in nearly seven years. up over time, although we believe the pace of “Soft July starts following on June’s solid reading growth will be modest,” said Daniel Silver, an econo- is a disappointment as we had expected housing to mist at JPMorgan in New York.
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Wilshire Grand: Outrigger Designs and Details for a Highly Seismic Site
ctbuh.org/papers Title: Wilshire Grand: Outrigger Designs and Details for a Highly Seismic Site Authors: Leonard Joseph, Thornton Tomasetti C. Kerem Gulec, Thornton Tomasetti Justin Schwaiger, Thornton Tomasetti Subject: Seismic Keywords: Belt Truss Outriggers Performance Based Design Seismic Publication Date: 2016 Original Publication: International Journal of High-Rise Buildings Volume 5 Number 1 Paper Type: 1. Book chapter/Part chapter 2. Journal paper 3. Conference proceeding 4. Unpublished conference paper 5. Magazine article 6. Unpublished © Council on Tall Buildings and Urban Habitat / Leonard Joseph; C. Kerem Gulec; Justin Schwaiger International Journal of High-Rise Buildings International Journal of March 2016, Vol 5, No 1, 1-12 High-Rise Buildings www.ctbuh-korea.org/ijhrb/index.php Wilshire Grand: Outrigger Designs and Details for a Highly Seismic Site Leonard M. Joseph1,†, C. Kerem Gulec1, and Justin M. Schwaiger2 1Thornton Tomasetti, Inc., 707 Wilshire Boulevard, Suite 4450, Los Angeles CA 90017 USA 2Thornton Tomasetti, Inc., 1400 Wewatta Street, Suite 930, Denver, CO 80202 USA Abstract The 1100 foot [335 m] tall Wilshire Grand Center tower under construction in Los Angeles illustrates many key outrigger issues. The tower has a long, narrow floor plan and slender central core. Outrigger braces at three groups of levels in the tower help provide for occupant comfort during windy conditions as well as safety during earthquakes. Because outrigger systems are outside the scope of prescriptive code provisions, Performance Based Design (PBD) using Nonlinear Response History Analysis (NRHA) demonstrated acceptability to the Los Angeles building department and its peer review panel. Buckling Restrained Brace (BRB) diagonals are used at all outrigger levels to provide stable cyclic nonlinear behavior and to limit forces generated at columns, connections and core walls.
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Wilshire Grand
TUESDAY, JUNE 27, 2017 WILSHIRE GRAND HIGH EXPECTATIONS FINISHING TOUCHES A RIVER OF GLASS SEISMICALLY CHIC L.A. now has a new tallest building. In the design of the tower’s interior, How the project’s signature One of the tallest buildings in an How will it fit into the fabric any detail out of place could skylight, inspired by the Yosemite earthquake hot zone had to balance of the city? PAGE 2 spoil the effect. PAGE 6 Valley, was saved. PAGE 18 safety and style. PAGE 20 Mel Melcon Los Angeles Times S2 TUESDAY, JUNE 27, 2017 LATIMES.COM WILSHIRE GRAND HOW WILL L.A.’S NEWEST HIGH-RISE FIT INTO AN EVOLVING CITY? By Thomas Curwen tanding at the base of the Wilshire statement that speaks more to the egos of a few perspective seems oddly miniaturized. Grand, architect David Martin than the needs of the many. But as he stepped onto the terrace on the 73rd shielded his eyes to take in the scope But this is what cities do, no matter the ex- floor, Martin turned to study the steel-and-glass of Los Angeles’ newest and tallest pense or impracticality. From a distance, these sail — a technical achievement rising an addi- skyscraper. structures declare their prowess and modernity tional 300 feet above him. Eight years ago, this shimmering by lifting themselves above the horizon like Oz, A skyscraper, Martin said, is often boring: a big glass tower began its life in his proxies in glass for ambition and power. From the box designed for utilitarian, commercial purposes S sketchbook as an ink drawing and a sidewalk, they inspire passers-by to peer skyward, with design subservient to the cost and speed of splash of blue wash.
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TELUS World of Science Presents Towers of Tomorrow with LEGO
TELUS World of Science presents Towers of Tomorrow with LEGO® Bricks the exhibition that combines architecture and design in a lively, creative space This interactive new gallery, presented by Concert Properties and White Spot Restaurants, encourages attendees to explore how they can contribute to Vancouver as a thriving community while engaging in STEAM (science, technology, engineering, arts & design and math) learning Photos available at this link and b-roll available here VANCOUVER, BC, January 7, 2019 – On January 24, TELUS World of Science will debut its newest exhibition Towers of Tomorrow with LEGO® Bricks presented by Concert Properties and White Spot Restaurants. This exciting gallery features 20 of the world’s most astonishing skyscrapers from Canada, the United States, Australia, Asia and the United Arab Emirates constructed with breathtaking architectural detail and accuracy by Australia’s Ryan McNaught, the only certified LEGO® professional in the Southern Hemisphere. Some of the most iconic and eye-popping towers from across North America are featured in this gallery including Toronto’s CN Tower, Philadelphia’s Comcast Technology Center, Los Angeles’ Wilshire Grand Center, Chicago’s Willis Tower, Atlanta’s Bank of America Plaza, New York’s super slender skyscrapers 111 West 75th Street, Central Park Towers and the city’s famous landmarks, Empire State Building and Chrysler Building. On a scale of 1:200 and built with stunning precision and attention to detail, the LEGO® towers offer visitors a birds-eye view of these extra-ordinary buildings and are just as impressive in model size. Visitors, young and old, can create their own ‘tower of tomorrow’ from over 200,000 loose LEGO® bricks in hands-on construction areas and can add their creations to a steadily rising futuristic LEGO® metropolis inside the exhibition.
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Towers of Tomorrow with LEGO Bricks / Exhibition Components
EXHIBITION COMPONENTS February 8, 2019 THE SOURCE FOR MUSEUM AND SCIENCE CENTER TOURING EXHIBITIONS. EXHIBITION COMPONENTS TABLE OF CONTENTS Introduction .....................................................................................................................................................................................................................................1 Towers .....................................................................................................................................................................................................................................................2 Additional Components................................................................................................................................................................................................. 6 SYDNEY LIVING MUSEUMS / TOWERS OF TOMORROW WITH LEGO® BRICKS EXHIBITION COMPONENTS 1 INTRODUCTION Towers of Tomorrow with LEGO® Bricks partners up some of the world’s most dazzling and innovative skyscrapers with the world’s most popular building brick. The exhibit features astonishing skyscrapers from North America, Asia and Australia constructed in breathtaking architectural detail. Ryan McNaught, one of only 12 LEGO® certifed professionals in the world and his award-winning team of builders have used more than half a million LEGO® bricks and devoted over 2000 hours to build the structures featured in the exhibition. Visitors will be inspired to create their own ‘towers of tomorrow’ with over
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Wilshire Grand Center
Location: Los Angeles, California Architects: AC Martin Contractors: Benson Industries Wilshire Grand Center Products: Expansion Joint Covers and Architectural Louvers About the Project Los Angeles’ captivating lifestyle and endless opportunities are why people gravitate to this mecca of culture and tourism in California. Adding to its appeal, the city is now home to the tallest building west of the Mississippi – Wilshire Grand Center. Located in the heart of downtown LA, this 73-story structure stands 1,100 feet tall, and includes a 900-room InterContinental hotel, five restaurants, and multi-floor, Class A office space. It also features an alluring, glass skylight, which cascades like an elevated waterfall above the entrance. The expansion joint covers were custom segmented to follow the curvature of the glass skylight. Design Goals AC Martin wanted to design LA’s newest skyscraper with the public’s benefit in mind. They envisioned floor-to-ceiling glass panels extending from the foundation to simulate movement and allow natural light to penetrate the building’s interior. The team visualized glass curtains for the skylight above the entrance that incorporated customizable curves and dimensional shapes capable of bearing unpredictable structural shifts. It was important for AC Martin to use products that would provide a stunning visual to the building’s exterior as well as resiliency within the infrastructure to withstand a potential seismic event. CS’ Boldline louvers offer superior protection against water infiltration. Results The
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Seaosc Award Board Final
Wilshire Grand Center, Los Angeles “Wilshire Grand’s ‘Crown sail’, will be the crowning achievement of the Los Angeles skyline for many years.” STRUCTURAL ENGINEER: Brandow & Johnston ARCHITECT: AC Martin Patrners, Inc. OWNER: Hanjin International Corporation PBD CONSULTANT: Thornton Thomasetti CONTRACTOR: Turner Construction PROJECT DESCRIPTION The Wilshire Grand Center is a 73-story steel tower in downtown Los Angeles with a project budget of $1.3 billion dollars. It is the tallest building west of the Mississippi and the tallest building in the United States outside of New York City and Chicago. The Tower and Podium structure are approximately 2 million square feet of Hotel, office, retail and parking. The upper 43 stories are for 900 hotel rooms and the lower 30 stories are for office. The structure has a 5 level subterranean parking structure for approximately 1,000 vehicles. The building will receive LEED GOLD Certification. Lower BRB Gussets Lower BRB Construction BRB@70th Floor Construction BRB@70th Floor Complete Upper Outriggers, Belt Truss Diagonal PROJECT CHALLENGES How do you design the tallest building west of the Mississippi River on a sloping site at one of the busiest corners in Downtown Los Angeles, adjacent to a major subway, with a pencil thin aspect ratio of 9-to-1? You need a GRAND solution! Atrium Construction Atrium Top Complete Atrium From Outside Middle Outriggers, Buckling-Restrained Braces IMPORTANT STRUCTURAL DESIGN FEATURES • Hybrid, 73-story structure with concrete core and steel frame • Concrete core with a 27:1 aspect ratio • Detailed Performance Based Design • 180 BRB outriggers at upper, middle and lower levels • Exterior belt trusses at the upper and lower BRB’s • Overturning forces distributed to concrete-filled exterior steel box columns • Elastic shortening of the concrete core mitigated by pre-loading the upper BRB’s • Podium structure separated 15” from tower along undulating glass/steel roof • Grade difference of 37ft.
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Potentials and Limitations of Supertall Building Structural Systems: Guiding for Architects
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Science Museum Invites Visitors to Let Their Inner Builders Shine with New Towers of Tomorrow with Lego® Bricks Exhibition
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