Archive for the ‘news’ Category

Survey of Damage from Japan’s March 11th Earthquake and Tsunami, presentation by Kit Miyamoto

April 5th, 2011 No comments

A colleague forwarded a link to a very interesting presentation by a Japanese engineer who surveyed the earthquake damage at various locations along the coast. It contains a lot more engineering information than all of the media reports I have seen.

Some interesting notes:

  • Strong shaking does not seem to have caused much if any structural damage. Tsunami damage was the dominant event.
  • Some types of construction (steel, concrete) resisted the tsunami better than others (wood).
  • He estimates that Tsunami warning systems that were in place saved hundreds of thousands of lives.

Here’s the link:

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Building Collapse in Shanghai

July 29th, 2009 No comments

You’ve all seen the pictures (linked at the bottom of the post) of the spectacular building collapse in Shanghai. At around 5:30am on June 27, an unoccupied building still under construction at Lianhuanan Road in the Minhang district of Shanghai city toppled over. One worker was killed.

These figures show why the building collapsed.  The images are from a Chinese newspaper and from the website.  The translations were forwarded to me in an email (Unfortunately, I can’t read Mandarin).


(1) An underground garage was being dug on the south side, to a depth of 4.6 meters
(2) The excavated dirt was being piled up on the north side, to a height of 10 meters
(3) The building experienced uneven lateral pressure from south and north
(4) This resulted in a lateral pressure of 3,000 tones, which was greater than why the pilings could tolerate.  Thus the building toppled over in the southerly direction. Read more…

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World’s tallest buildings reach completion simultaneously with onset of major recession

February 25th, 2009 No comments

Via Council on Tall Buildings and Urban Habitat:

The year 2008 will long be remembered as the start of an economic crisis that has gripped the entire globe – a year that may also have brought to an abrupt end the worldwide construction boom of the past decade that has seen ever-denser cities containing ever-taller buildings proposed from Madrid to the Middle East, from Shanghai to San Francisco. As financial shock waves have reverberated around the world, high-profile tall building projects in virtually all skyscraper cities have been cancelled, delayed, or put on hold in response to the precarious global economic conditions. The question that everyone is now asking – is this the end of the tall ambitions of places such as Moscow, Chicago or Dubai for the short-mid term future?

The correlation between tall buildings and economic recession is not a new one. In 1999 the economist Andrew Lawrence created the ‘Skyscraper Index’  showing how almost all of the world’s tallest buildings throughout history have reached completion virtually simultaneously with the onset of a major economic recession. Using the research and criteria of the Council on Tall Buildings and Urban Habitat (CTBUH), and specifically their annual ’Ten Tallest Buildings Completed Annually’ and projected ‘Tallest 20 in 2020’ research, this paper seeks to examine further the link between skyscrapers and economic cycles, and suggest how the current economic crisis will affect tall building developments in the next decade or so.

(link to PDF of article)

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ASCE Releases 2009 Report Card for America’s Infrastructure

January 28th, 2009 No comments


Dear ASCE Member,

Today, the American Society of Civil Engineers issued its latest Report Card for America’s Infrastructure, the fourth since 1998. Never has the need for infrastructure investment received such national attention as it is now in the context of stimulating our economy. Recognizing the importance of informing and contributing to this discussion in a timely manner, we made the decision to release the key components of our 2009 Report Card two months ahead of schedule. Today ASCE released website the grades for 15 categories of infrastructure, solutions for improvement, and a five year investment need figure.

The overall grade for the nation’s infrastructure is again a D and the cost to bring it up to good condition has risen to $2.2 trillion. In more than a decade, the United States has made no measurable progress in improving either the condition or performance of our roads, bridges, water systems or other vital infrastructure when viewed in aggregate.

Category Grade




Dams D
Drinking Water D-
Energy (Electric Power Grid) D+
Hazardous Waste D
Inland Waterways D-


Public Parks and Recreation C-
Rail C-
Roads D-
Schools D
Solid Waste C+
Transit D
Wastewater D-

Read more…

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Make It Work: Engineering Possibilities (exhibition in NYC)

January 22nd, 2009 No comments

via AIA-NY Chapter

Today’s engineers are working across disciplines and driving innovation. MAKE IT WORK. Engineering Possibilities looks at how engineers are envisioning and realizing the future of our built environment by transforming structures, improving environments, enhancing materials, re-inventing building technologies, and advancing forms. This exhibition highlights how inventive strategies for building are born from multidisciplinary research and integrated practice. Small engineering firms, large engineering firms, engineering schools, university labs, materials labs, artists, inventors, and architects are all part of the exchange of ideas – plotting trajectories of innovation. Read more…

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ASCE Announces Early Release of 2009 Report Card for America’s Infrastructure

January 16th, 2009 No comments

This was sent to ASCE members this morning:

Dear ASCE Member,

Infrastructure is receiving unprecedented attention from President-elect Obama, the U.S. Congress, and the media. ASCE finds itself at a crucial moment to spread our message and participate in the dialog regarding infrastructure improvements.

Yesterday, the House Appropriations Committee released a summary of the House Democratic Leadership’s proposed economic stimulus package, the American Recovery and Reinvestment Act of 2009. Included in the infrastructure and science portions are many of ASCE’s priority issues. For details on the package, visit ASCE’s Government Relations blog.

On January 28, 2009, ASCE will issue important components of our 2009 Report Card for America’s Infrastructure, including letter grades with short conditions summaries for each of 15 categories, solutions for infrastructure improvement, and an overall cost to improve the nation’s infrastructure. The nation’s leaders rely on ASCE to provide expert advice on the condition of the nation’s infrastructure. Early release of the 2009 Report Card is essential to fulfilling that role. Read more…

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Bridge versus hoe excavator: the truth

November 24th, 2008 No comments

hoecrash1hoecrash2hoecrash3We’ve seen these pictures forwarded to us by email and wondered if they were computer generated or photoshopped. Well, they’re not (via

Aspire Magazine had a follow up article [pdf], where they discussed the repair work that resulted from this accident.

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NTSB Says Design Flaw Found in I-35W Bridge

January 18th, 2008 No comments

I-35W Bridge collpaseVia ASCE espana

The National Transportation Safety Board (NTSB) today announced that a serious design flaw was found in some of the gusset plates on the I-35W bridge in Minneapolis, which collapsed on August 1, 2007. As a result, the NTSB issued a recommendation that the Federal Highway Administration (FHwA) require bridge owners to verify that the stress levels in all structural elements, including gusset plates, remain within applicable requirements whenever planned modifications or operational changes may significantly increase stresses. This would apply to all non-load-path-redundant steel truss bridges within the National Bridge Inventory.girl boarding school
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MIT sues Gehry, citing leaks in $300m complex

November 7th, 2007 No comments

Stata CenterVia the Boston Globe

The Massachusetts Institute of Technology has filed a negligence suit against world-renowned architect Frank Gehry, charging that flaws in his design of the $300 million Stata Center in Cambridge, one of the most celebrated works of architecture unveiled in years, caused leaks to spring, masonry to crack, mold to grow, and drainage to back up.

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Blueprint from India – More architecture firms are offshoring

April 18th, 2007 No comments

Has anyone seen the firsthand effects of outsourcing in the architecture/engineering industry? Of course we’ve been hearing about it for years in computers and IT, but this article from Businessweek suggests that it’s already begining for architects.

The article profiles Cadforce, a company out of California that has resources in India to help them with projects in the US. The company outsources the more time-consuming and technical tasks, such as creating blueprints from schematics, which allows their architects here to focus on design.

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