Archive for June 2010
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Steel Going Up at Marlins New Home
Posted by Daniel Popp on June 30, 2010 at 7:29 AM.
Steel erection is under way at the new Marlins Ballpark being constructed in Miami on the site of the former Orange Bowl. You can see the progress by clicking here and selecting the Interior Construction Cam. Be sure to zoom in, then pan back and forth to observe some of the details of the work.
The ballpark will feature a retractable roof. Learn more about it by visiting the Marlins homepage.
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Used Bridge Available, but Hurry
Posted by Alison Trost on June 29, 2010 at 8:01 AM.
Proposals are being accepted through June 30 from public agencies or non-profits who would like to relocate and re-use the 820 ton lift span Commodore Schuyler Heim Bridge. Its 240-ft span currently crosses the Cerritos Channel in Long Beach, Calif. Relocation would be the responsibility of the new owner. Read about it in the June issue of ASCE news by clicking here.
Rollin' Down the Highway
Posted by Alison Trost on June 28, 2010 at 8:48 AM.
On the weekend of May 1 a light rail steel bridge was rolled into place over the 6th Avenue highway in Denver. This tied arch bridge is 65 ft tall, weights 1.2 million lb and was rolled into place from the south side of 6th Avenue. To watch this process on YouTube click here.
The bridge was designed by Portland, Ore.-based David Evans & Associates and fabricated by AISC member Fought & Company, Tigard, Ore., to be placed quickly and efficiently as part of the FasTracks West Corridor Project.
For more information on this project and other steel bridges, check out the National Steel Bridge Alliance June newsletter.
Steel Shots: Solution to Hunger
Posted by Tom Klemens on June 25, 2010 at 8:39 AM.
One of the 15 sculptures created for the 2010 CANstruction in Chicago, this entry by HDR Inc., consists of approximately 4,080 cans of tuna and salmon and was entitled “Solution to Hunger.” The commentary accompanying this carefully balanced Rubik’s Cube suggests that “with each hunger reducing effort, the cube turns closer to a solved puzzle.” (Click on photo for another view.) Did you know that steel food cans are the most recycled food and beverage package? More than 1,500 food items come in steel cans, and more than 28,000 community recycling program in North America collect steel cans for recycling. (More info here.)
CANstruction is a worldwide event that combines the competitive spirit of a design/build competition with a creative way to help feed hungry people. Competing teams, led by architects and engineers, showcase their talents by designing and building giant structures made entirely from canned foods. All canned goods are donated to charity to help fight hunger. In Chicago, 15 sculptures helped to donate over 50,000 cans of food to the Greater Chicago Food Depository. The sculptures were showcased for three weeks in the lobby of the famous Merchandise Mart where visitors could view the giant structures and vote for their favorite.
The winning creation this year was by Wiss, Janney, Elstner Associates Inc. Click here to see “The Changing Face of Hunger” on the WJE website.
To see the other 2010 Chicago CANstruction entries and to learn more about the program, click here.
Text and photos by Jacinda Collins, P.E.
Tall Buildings Reference Guide
Posted by Alison Trost on June 24, 2010 at 8:25 AM.
The Council on Tall Buildings and Urban Habitat has recently published “Tall Buildings: the CTBUH reference guide of the what, when and where of tall and urban.”
This reference guide provides a snapshot of tall buildings internationally, through 124 pages of data, graphs and statistics. In addition to documenting what is already built, it examines characteristics of projects currently under construction and proposed, giving a clear indication of current trends and directions in the tall building industry. From the “Tallest Ten” and the “World’s Tallest Lists” to the “Rise of the Supertall” and “Innovative 20,” a large variety of subjects and statistics are provided.
The guide includes the CTBUH tall building height criteria and provides an overview of other resources the group provides. A limited supply of the guide is available for $15 plus shipping and handling.
For more information and a preview of the publication, click here.
To download an order form, click here.
In Memory of Kurt Gustafson, Director of Technical Assistance
Posted by Alison Trost on June 23, 2010 at 9:28 AM.
Kurt Gustafson, S.E., P.E., died suddenly on June 19, 2010, at the age of 68. He served as AISC’s director of technical assistance since 2004, overseeing the response to more than 200 questions a week from engineers, architects, owners, and others with regard to the design and construction of structural steel buildings. For more information from the AISC website click here.
Free Webinar on One-Coat Systems
Posted by Tom Klemens on June 22, 2010 at 4:57 PM.
The National Steel Bridge Alliance, which is dedicated to advancing the state-of-the-art of steel bridge design and construction, encourages you to attend a free SSPC-JPCL Education Series webinar on “One-Coat Bridge Systems for Steel Bridge Structures.” The webinar will be presented on Wednesday, June 23 from 11:00 a.m. to noon, EDT.
Eric S. Kline, executive vice president and senior coating consultant with KTA-Tator, Inc., will present on the results of a two-year study conducted by the Federal Highway Administration that evaluated performance of eight separate one-coat systems. Included in the evaluation were electrochemical impedance spectroscopy, surface failure characterization, rust creepage at the scribe, pull-off adhesion, and visual changes to color and gloss.
This webinar is part of the 2010 SSPC-JPCL Education Series, providing continuing education for SSPC recertifications as well as technology updates on important topics. Participation in the webinar is free, and all participants will receive a free certificate of completion. For those who wish to receive continuing education credits from SSPC, a test is available after the webinar. Cost of the test service is $25.
For more information and to register for this free event, click here.
Structural Maintenance Challenges
Posted by Ted Sheppard on June 22, 2010 at 12:37 PM.
With the pending introduction of wind turbines offshore U.S. waters (the Cape Wind Project has been approved by the U.S. Dept. of the Interior and will involve 130 turbines) the time has come to develop comprehensive plans for addressing structural integrity management for the service life of these systems. Current regulations for offshore facilities focus on oil and gas drilling and production. While there are many similarities between wind facilities and oil and gas facilities offshore, the differences will have a major impact on how inspections are planned and executed.
Energo Engineering, Houston, Texas, did some work for the Minerals Management Service (MMS) to establish guidelines for inspection of the structural portions of offshore wind turbines. Robert Sheppard of Energo presented a paper (summarized below) on the subject at this year’s Offshore Technology Conference in Houston.
The height of the tower structure, compact footprint of the installed equipment, large blades that form an integral part of the structure and operations, and the number of facilities installed in a field are just some examples of the unique features of wind turbine structures that pose a challenge to inspections, particularly if your background is offshore oil and gas as opposed to land-based wind turbines. And for those familiar with land-based turbines, moving to the offshore presents a different set of issues such as getting inspectors to the facilities, evaluating the subsea structure and systems, and how degradations such as fatigue and corrosion are influenced by the offshore environment.
Some considerations for those involved in planning or executing offshore wind turbine inspections and integrity management include:
- Is there infrastructure to support getting inspectors to and from the facilities?
- Is there infrastructure to support subsea inspections either by diver or ROV?
- How will the inspectors get from the base of the tower to the nacelle?
- Do the data you want to gather (i.e., corrosion levels, crack indications, blade damage) involve visual only, visual from a distance, NDT, close access to blades?
- What will you do with the data gathered and how will that help plan future inspections of this and other facilities in the field?
With proper planning both for collecting and using the data gathered during inspections, a robust integrity management program can be implemented to help ensure these facilities are operational throughout their service life.
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NASCC Conference Proceedings Now Posted
Posted by Alison Trost on June 21, 2010 at 10:09 AM.
The proceedings from 2010 NASCC: The Steel Conference are now posted at www.aisc.org/2010nascconline. These proceedings document much of the material presented at the conference, including a synchronization of the speakers voices along with their PowerPoint presentations.
Sessions from both The Steel Conference and The Annual Stability Conference are posted online. For information on the proceedings from The Structures Congress, visit the Structural Engineering Institute website, http://content.seinstitute.org, or the corresponding ASCE bookstore page, www.asce.org/Product.aspx?id=2147488283.
Steel Shots: Big Bridge, Big Birthday Bash
Posted by Alison Trost on June 18, 2010 at 9:05 AM.
Opened in 1959, The present Portage Lake Lift Bridge is the widest and heaviest double decked vertical lift bridge in the world, capable of allowing 100 ft. of clearance for passing ships. (Photo: Justin Murawski)
Looking for a good weekend getaway to Michigan’s Upper Peninsula? Head to Houghton, Mich., for Bridgefest 2010, scheduled for June 18-20 to celebrate the birthday of the Portage Lake Lift Bridge.
For more historical background, visit http://history.cityofhoughton.com/histor
To explore the 2010 Bridgefest activities, go to www.bridgefestfun.com.
Note: Take some warm clothes. One portion of the Houghton website notes they have two seasons - “winter’s here” and “winter’s coming.”