Lighter AAC from Matrix

Matrix PAAC, LP (formerly Hebel Southeast), makers of autoclaved aerated concrete (AAC) block, have introduced the AAC-2.5LT. The AAC-2.5LT has the same dimensions as the standard 2.5, but is 23% less dense. Even though the block is light enough to reduce shipping costs on a full load, it is still suitable for structural... Read more

Sydney Olympics Walk the Talk

The Olympic Games being held later this summer in Sydney, Australia have gone further than any other modern Olympics in addressing environmental considerations—due largely to a unique collaboration.

In the early 1990s, Greenpeace International head Paul Gilding participated with environmental consulting... Read more

New Energy Efficiency Bill Is Performance-Based

On June 13, Senator Bob Smith (Republican–NH) introduced the Energy Efficient Buildings Incentives Act (S. 2718) to Congress. The bill would provide tax deductions for the following residential and commercial energy efficiency improvements: whole-building performance, PV systems, certified solar... Read more

Newsbriefs

In response to ongoing environmental concerns with refrigerants such as HCFCs and HFCs, a naturally occurring fluid may be making a comeback:

carbon dioxide. Although CO2 is the principal greenhouse gas, compared to most other refrigerants on a per-molecule basis it is extremely benign. According to the July 14, 2000 issue of... Read more

Civano: Is the Debate Over This Project Sustainable?

It’s not surprising that a project with such comprehensive and intensive sustainability goals as Civano would draw as much fire as interest. It’s hard to find anyone familiar with the project who doesn’t have a pretty strong opinion about it. In our review of Civano,

EBN conducted an... Read more

Adapting to a Greenhouse World

Now that any lingering doubts about the reality of human-generated global climate change are disappearing (see news story, page 5), I’m faced with a sobering reality check.

I’ve been harboring this illusion that once the doubts were adequately addressed, the world would wake up and take real action to... Read more

There is a compelling elegance in using the earth’s relatively constant temperatures as a source and sink for heat. Indeed, ground-source heat pumps can be a highly efficient space conditioning option and, although their overall market share is very low, they are increasingly popular in the many dozens of model green homes and light commercial... Read more

On June 30, 2000 two dozen representatives of various design-related organizations (joined by deans from some of the nation’s leading architecture schools via video teleconference) met at the World Resources Institute in Washington, D.C. to discuss

sustainability in architectural education. The event was organized by The American... Read more

Draft Report Predicts Climate Change Impacts for U.S. by Region

On June 12, 2000 the National Science Foundation released its

National Assessment Synthesis Report for a 60-day comment period. This report is the culmination of a research program initiated in 1990 by the Global Change Research Act. Included in it are the results of... Read more

LEED in Seattle, and an Eleventh-Hour Change

I’d like to thank you for publishing such an excellent article on the LEED™ Rating System (EBN

Vol. 9, No. 6). Not only does it provide a helpful snapshot of the system’s content, but it also pointed out some of the history, challenges, and unresolved issues in the system. I need to provide a... Read more

The Green Skyscraper:

by Ken Yeang, 1999. Prestel Verlag, Munich. Paperback, 304 pages, $29.95

The challenges presented by Ken Yeang in

The Green Skyscraper start right with the cover shot—an arresting model of the Tokyo Nara Building revealing several floors of skyscraper devoted to gardens and a soft, sculptured form—and... Read more

Honeywell TranStar Transformer Offers Significant Savings

“Exciting transformers” might seem like an oxymoron, but Honeywell has one for you—the new dry-type, ultra-low-loss TranStar™. The iron or steel core in conventional transformers has been replaced in the TranStar by a highly efficient MetGlas® amorphous metal core.

The TranStar... Read more

Erie-Ellington Homes: Affordable + Green

A new affordable housing development in the Dorchester area of Boston demonstrates that affordability and green can go hand-in-hand with publicly funded housing projects.

A ribbon-cutting ceremony for the 50-unit Erie-Ellington Homes housing project was held on June 22. The triplex units cost $94... Read more

Recycling Asphalt Roofing Shingles

Each year, about 11 million tons (11.2 tonnes) of asphalt roofing shingle waste is generated in the U.S.—7 to 10 million tons (7.1 to 10.2 tonnes) in tear-off and 1 million in manufacturer scrap.

Nearly two-thirds of all roofs, both new and existing, are clad in asphalt shingles. The potential uses of... Read more

A study released in May by the Harvard School of Public Health links

air pollution from two coal-fired power plants—in Salem and Somerset, Massachusetts—to 43,000 asthma attacks and 159 premature deaths. More than 32 million people in New England, New York, and New Jersey are exposed to plant emissions. Both plants are owned by PG&E... Read more

Dioxin: Down and Up

An EPA assessment scheduled for release in June will conclude that dioxin is a human carcinogen, according to a May 16 article in the

Washington Post. While dioxin emissions are way down from peak levels in the 1970s, reflecting the impact of a series of regulations on dioxin-emitting industries such as incinerators... Read more

The Natural House:

by Daniel D. Chiras, 2000. Chelsea Green Publishing Co., White River Jct., Vt. Paperback, 470 pages, $35.

Simply put, this is the most comprehensive and most useful introduction to natural building systems and practices available. Author Daniel Chiras is an educator and writer (his high school textbook,

... Read more

The Hayward Truss

Hayward Lumber Company of Pacific Grove, California continues its leadership role in the green building materials industry (see EBN

Vol. 7, No. 1) with introduction of 100% certified-wood trusses.

William E. Hayward, President and CEO of the company, called this is a “landmark event in the construction industry... Read more

Newsbriefs

A proposal has been submitted in the Canadian House of Commons for a

nationwide ban on “cosmetic” pesticides for residential lawns—those used to get rid of dandelions or make the grass look greener. Dozens of small communities in Canada have already banned or severely limited use of such chemicals, according to a June 5... Read more

FTC Revises EnergyGuide Labels for Clothes Washers

As of July 14, the spurious distinction made by the Federal Trade Commission between horizontal axis (front-loading) and vertical axis (top-loading) clothes washers with respect to energy consumption will end.

Previously, the FTC maintained two categories for measuring energy... Read more