flexiblefullpage -
billboard - default
interstitial1 - interstitial
Currently Reading

Precast concrete tower honors victims of United Airlines Flight 93

Concrete

Precast concrete tower honors victims of United Airlines Flight 93

Paul Murdoch Architects designed the project.


By David Malone, Associate Editor | September 2, 2020
Tower of Voices in Pennsylvania

All photos: Brenda Torrey, Friends of Flight 93

The Tower of Voices, part of the last major phase of work at the Flight 93 National Memorial located in Somerset County, Penn., where United Flight 93 crashed on Sept. 11, 2001, is conceived as both a musical instrument and a tower.

The 93-foot-tall precast tower comprises 40 custom-made aluminum wind chimes, with each chime producing a distinct musical note. Together, these chimes create a set of “40 voices” to memorialize the 40 passengers and crew who lost their lives when the flight was hijacked by terrorists. The chimes are suspended at variable heights, starting 20 feet above the main plaza and ascending to the top. The customizable features included in the precast concrete will enable the chimes to “sing” even at low wind speeds.

The tower form is designed as an enclosure that cradles the 40 chimes and opens towards the public plaza on which it stands. The precast concrete columns with branch connectors abstractly recall the Hemlock grove near the crash site. Precast concrete was used for the tower to accommodate the complex and unusual shapes of each component and because it had the strength needed to support the tall, slender frame.

 

Tower of Voices

 

The design process included a combination of consultants including a musician, chimes artist, acoustical engineer, and wind consultants. Diagonal column splices allowed the joints to blend in with diagonal beams. At the joints, pockets and splines aligned the column pairs vertically, creating symmetry in a structure with various angles, curves, and heights.

The project acts as a landmark memorial feature near the entrance of the park.

Tags

Related Stories

Building Materials | Aug 3, 2022

Shawmut CEO Les Hiscoe on coping with a shaky supply chain in construction

BD+C's John Caulfield interviews Les Hiscoe, CEO of Shawmut Design and Construction, about how his firm keeps projects on schedule and budget in the face of shortages, delays, and price volatility.

Concrete | Jul 26, 2022

Consortium to set standards and create markets for low-carbon concrete

A consortium of construction firms, property developers, and building engineers have pledged to drive down the carbon emissions of concrete.

Reconstruction & Renovation | May 4, 2022

AIA course: Concrete buildings — Effective solutions for restoration and major repairs

The history of concrete construction between 1950 and 1970 offers architects and construction professionals a framework for how to rehabilitate these buildings today using both time-tested and emerging technologies. This course, worth 1.0 AIA LU, was authored by Henry Moss, AIA, LEED AP, Principal with Bruner/Cott Architects. 

Concrete Technology | Apr 19, 2022

SGH’s Applied Science & Research Center achieves ISO 17025 accreditation for concrete testing procedures

Simpson Gumpertz & Heger’s (SGH) Applied Science & Research Center recently received ISO/IEC17025 accreditation from the American Association for Laboratory Accreditation (A2LA) for several concrete testing methods.

AEC Tech Innovation | Mar 9, 2022

Meet Emerge: WSP USA's new AEC tech incubator

Pooja Jain, WSP’s VP-Strategic Innovation, discusses the pilot programs her firm’s new incubator, Emerge, has initiated with four tech startup companies. Jain speaks with BD+C's John Caulfield about the four AEC tech firms to join Cohort 1 of the firm’s incubator.

Codes and Standards | Feb 28, 2022

Low-cost concrete alternative absorbs CO2

Researchers at Worcester Polytechnic Institute have developed a new CO2-absorbing material that’s a low-cost alternative to concrete.

Products and Materials | Feb 24, 2022

MAXXON® Corporation announces strategic affiliation with S3 Surface Solutions

Maxxon® Corporation, creator of Gyp-Crete® and a leader in the underlayment industry for 50 years, has aligned with S3 Surface Solutions, an innovative manufacturer of products that address problematic concrete slabs, to bring innovative, technology-driven subfloor preparation solutions to the flooring industry.

Sponsored | Reconstruction & Renovation | Jan 25, 2022

Concrete buildings: Effective solutions for restorations and major repairs

Architectural concrete as we know it today was invented in the 19th century. It reached new heights in the U.S. after World War II when mid-century modernism was in vogue, following in the footsteps of a European aesthetic that expressed structure and permanent surfaces through this exposed material. Concrete was treated as a monolithic miracle, waterproof and structurally and visually versatile.

3D Printing | Jan 12, 2022

Using 3D-printed molds to create unitized window forms

COOKFOX designer Pam Campbell and Gate Precast's Mo Wright discuss the use of 3D-printed molds from Oak Ridge National Lab to create unitized window panels for One South First, a residential-commercial high-rise in Brooklyn, N.Y.

boombox1 - default
boombox2 -
native1 -

More In Category




halfpage1 -

Most Popular Content

  1. 2021 Giants 400 Report
  2. Top 150 Architecture Firms for 2019
  3. 13 projects that represent the future of affordable housing
  4. Sagrada Familia completion date pushed back due to coronavirus
  5. Top 160 Architecture Firms 2021

 


Magazine Subscription
Subscribe

Get our Newsletters

Each day, our editors assemble the latest breaking industry news, hottest trends, and most relevant research, delivered to your inbox.

Subscribe

Follow BD+C: