NZ's plastic stadium turns 1

By Kate Tilley
Correspondent

Published: August 15, 2012 6:00 am ET

New Zealand’s transparent polymer-roofed Forsyth Barr Stadium (Chris Sullivan photo)

Related to this story

Topics Materials Suppliers
Companies & Associations

DUNEDIN, NEW ZEALAND (Aug. 15, 3:35 p.m. ET) — New Zealand’s transparent polymer-roofed Forsyth Barr Stadium — the world’s only permanently enclosed, natural turf stadium — has celebrated its first birthday.

The stadium’s ethylene tetrafluoroethylene (EFTE) clad roof is light and translucent, allowing maximum sunlight onto the pitch.

The US$162 million stadium is in Dunedin — the second-largest city on New Zealand’s south island. Its rectangular pitch is 433 feet long and 266 feet wide; the internal roof is 121 feet high; and the external roof is 154 feet high. The roof is supported by five arches, each spanning 344 feet.

Construction began in June 2009 and finished Aug. 1, 2011. It held its inaugural rugby football game Aug. 7, 2011, ahead of the 2011 Rugby World Cup, hosted by New Zealand last September.

An international architectural firm, Missouri-based Populous Holdings Inc., designed the stadium with New Zealand-based Jasmax Ltd.

The stadium is the southern hemisphere’s largest ETFE-covered structure, with 220,660 square feet of ETFE cladding.

Before the stadium was built, turf experts, engineers and architects spent two years studying the affect of grass growing under ETFE. An ETFE test rig was built onsite to monitor grass growth.

Populous associate principal Ron Van Sluijs said grass under the ETFE rig was healthier and stronger than grass around it. “We can maintain a constant temperature and grow a stronger grass which won’t become boggy because it will never rain, snow, or hail inside,” he said. “[The] material allows for 90 percent of sunlight to reach the pitch, along with UV light and fresh air.”

Populous associate Jochem Veerman told Plastics News the plastic roof has performed “incredibly well” in its first year.

“It has a reputation as one of the best playing surfaces in New Zealand. The main benefit of having a roof over the grass is the field’s moisture levels can be controlled and are not dependent on the weather,” Veerman said.

ETFE is lighter than glass (just 1 percent of the weight), bears 400 times its own weight, and stretches to three times its length, making it suitable for Dunedin’s windy, snowy conditions. Van Sluijs and Veerman said the material is up to 70 percent cheaper to install than glass, and transmits more light and heat than glass, reducing energy costs by up to 30 percent.

Van Sluijs and Veerman said polytetrafluoroethylene and PVC were often used for roofing, however neither are as clear as ETFE. They also do not allow sufficient light and ultraviolet rays through. Clear hard plastics, like polycarbonate and acrylic, are not suitable because they have non-UV translucent properties.

They said Forsyth Barr Stadium is not the first to incorporate ETFE, but it is the first time ETFE’s UV-transparent properties have been used in a stadium. Auckland’s Eden Park Stadium, Munich’s Allianz Arena and Beijing’s National Aquatics Centre (or Water Cube) also use ETFE.

ETFE-clad, non-sports buildings with vegetation inside include the United Kingdom’s Eden Project (the world’s largest greenhouse) and the Netherlands’ Burgers’ Zoo.

Van Sluijs and Veerman said the Forsyth Barr Stadium is the world’s only permanently covered stadium to house a natural turf playing field, but is not the first. Houston’s Reliant Astrodome was the first, but the grass was replaced with artificial turf within a year after opening.

Some sport venues, like the Netherlands’ GelreDome, Japan’s Sapporo Dome, and Arizona’s University of Phoenix Stadium, have natural grass and fixed roofs. However the pitch is on tracks and slides outside the building to grow.

A spokeswoman for Dunedin Venues Management Ltd., the Forsyth Barr Stadium’s manager, said 350,000 people attended 269 events in the first year. The stadium seats 30,000 people.


Comments

NZ's plastic stadium turns 1

By Kate Tilley
Correspondent

Published: August 15, 2012 6:00 am ET

Post Your Comments


Back to story


More stories

Image

Commerce Department agrees to investigate PET dumping complaint

April 1, 2015 1:42 pm ET

UPDATED — A flood of alleged low-priced PET resin imports has led three U.S. PET makers to seek anti-dumping duties.    More

Image

Fire at Texas plant could impact polypropylene market

April 1, 2015 11:21 am ET

UPDATED — No injuries were reported in a March 30 fire at an ExxonMobil Chemical propylene unit in Beaumont, Texas — but the incident...    More

Image

Solegear raising funds as it debuts on TSX Venture stock exchange

April 1, 2015 11:08 am ET

A fledgling bioplastics company has raised capital for growth and obtained a listing on the TSX Venture stock exchange.    More

Image

Lanxess merges PU additives into Rhein Chemie division

April 1, 2015 9:17 am ET

German resin company Lanxess AG has combined the activities of the former Rhein Chemie and its Lanxess functional additives business into a new Rhein ...    More

Image

North American Pipe unit lab to focus on 'modern, innovative' formulations

March 31, 2015 3:25 pm ET

North American Specialty Products LLC — a unit of North American Pipe Corp. — has opened a new material science lab in Leola, Pa.    More

Market Reports

Trends in Resin Distribution

The growth of the North American resin distribution market is undeniable - and industry analysts are confident that growth will continue in 2015 and beyond.

This new report analyzes market trends and provides data on historical sales trends for PE (distribution and resellers), PolyOne Distribution figures, U.S. ethylene expansions based on shale gas and natural gas production by category to 2035.

Learn more

Plastics Recycling Trends in North America

This report is a review and analysis of the North American Plastics Recycling Industry, including key trends and statistics based on 2013 performance. We examine market environment factors, regulatory issues, industry challenges, key drivers and emerging trends in post-consumer and post-industrial recycling.

Learn more

Plastics in Mexico - State of the Industry Report

This report analyzes the $20 billion plastics industry in Mexico including sales of machinery & equipment, resins and finished products.

Our analysts provide insight on business trends, foreign investment, top end markets and plastics processing activity. The report also provides important data on exports, production, employment and value of plastics products manufactured.

Learn more

Upcoming Plastics News Events

June 2, 2015 - June 3, 2015Plastics Financial Summit - Chicago 2015

September 16, 2015 - September 18, 2015Plastics Caps & Closures - September 2015

More Events