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Steel Shots: Decision Delta
Posted by Tasha Weiss on December 6, 2013 at 5:36 PM.
The new Shenandoah River Bridge superstructure consists of a five-girder, four-substringer system supported by five lines of delta legs - one for each girder. Photo: Courtesy of HDR, Keith Philpott, photographer
Just an hour’s drive west from Washington, D.C., the new Shenandoah River Bridge stands in aesthetic harmony with its surroundings.
The project exists within a unique ecosystem where the scenic Shenandoah River valley boasts steeply rising wooded mountains, a diverse wildlife habitat, rolling farmland and quaint, historic towns. Not surprisingly, the region has evolved into a desirable getaway from the frenzy of urban life.
With the subsequent increase in traffic, the West Virginia Department of Transportation - Division of Highways (WVDOT) determined that the winding two-lane road that carried West Virginia Route 9 (WV9) through the valley was no longer sufficient. In September 2009, it revealed the design for a new alignment: a four-lane divided highway using a bridge over the Shenandoah River. At the crossing location, the proposed grade was nearly 200 ft above the river, and the overall bridge length would be nearly 1,800 ft. While there are no navigation requirements for the river, the environmental constraints for the project and the relatively high cost of substructure units located in the valley dictated that the main span be approximately 600 ft in length. To accommodate these constraints, a three-span continuous deck truss configuration (400 ft - 600 ft - 400 ft) with short plate-girder approach units was initially selected during the design phase.
In early October 2009, WVDOT modified the procurement from design-bid-build to design-build and instructed contractors that they could bid the as-designed truss or develop and bid a different structure type, providing they addressed the following criteria:
- The chosen substructure locations for the deck truss bridge generally must be used, with very limited latitude.
- The established horizontal and vertical alignment could not be changed.
- Alternatives that required increased amounts of disturbance to the gorge slopes would not be considered.
- The use of a causeway or cofferdams, other than as shown on the plans for the as-designed bridge and/or in the Section 404 (of the Clean Water Act) Permit, would require re-permitting.
- The design must comply with all previously established environmental commitments.
Following concept approval, structural engineer HDR Engineering developed a delta frame design that delivered significant savings compared to proposals for more traditional designs and also resurrected a tried-and-true form that had been largely forgotten since the 1970s.
To learn more about this uncommon design resurrected by the new bridge, you can read the article from the December 2013 issue of MSC (available now!).
Lincoln Electric Broadens Cutting, Welding Portfolios with Recent Acquisitions
Posted by Tasha Weiss on December 5, 2013 at 4:52 PM.
Lincoln Electric (an AISC member) has acquired an ownership interest in Burlington Automation Corporation, a designer and manufacturer of 3D robotic plasma cutting systems based in Hamilton, Ontario, Canada. Terms of the transaction were not disclosed.
“Burlington Automation broadens our portfolio of automated cutting and welding process solutions and strengthens our automation strategy,” said Christopher L. Mapes, CEO of Lincoln Electric. “Their proprietary technology complements our current automated cutting and welding systems by enabling customers to increase productivity and improve quality while reducing capital investment and floor space.”
In separate news, Lincoln Electric announced that it has entered into a definitive agreement to acquire Robolution GmbH, a provider of robotic arc welding systems based outside of Frankfurt, Germany. The transaction was expected to close by the end of last month and terms were not disclosed.
AISC Detailer Training CDs Available for Download
Posted by Tasha Weiss on December 3, 2013 at 6:01 PM.
AISC’s detailing resources in ePubs have been updated with the addition of the very first detailer training CD collection from 2000, and the contents of those golden-oldie CDs are now downloadable by AISC members.
AISC and NISD jointly created a series of 12 detailer training CDs in 2000. These CDs contained MPG instructional videos and PDFs of example drawings covering the basics of the structural steel industry and 2D detailing. As a courtesy to AISC members, the contents of these CDs are available in AISC’s ePubs collection.
To download the CD contents, go to AISC’s detailing resources in ePubs.
Entries for 2014 AIA TAP BIM Awards Due Dec. 16
Posted by Tasha Weiss on December 3, 2013 at 10:30 AM.
The AIA Technology in Architectural Practice (TAP) Knowledge Community is seeking projects that exhibit exemplary use of integrated and interoperable BIM for its 10th Annual BIM Awards competition.
Since 2005, the AIA TAP Knowledge Community has spearheaded the effort to highlight award-winning “best of breed” case studies from the profession in the harnessing of BIM technology and processes to further design, construction and overall project excellence.
Submission categories include: Stellar Architecture using BIM; Delivery Process Innovation; Outstanding Sustainable Design; Academic Program/Curriculum Development; Exemplary use of BIM in a Small Firm; Exemplary use of BIM in Facility Management/Operations; and Process and Technology Innovation Integrating with BIM.
Award-winning projects will be recognized in AIA publications and electronic media, and also at the BIM Awards presentation prior to the 2014 AIA National Convention in Chicago (June 26-28) and partner events.
All entries and supporting materials must be submitted online by Monday, December 16.
For full eligibility rules, judging criteria and submission fees or to submit your project materials, visit the 2014 AIA TAP BIM Awards page.
Entry Deadline for IDEAS2 Awards Extended to Dec. 9
Posted by Tasha Weiss on November 27, 2013 at 3:13 PM.
The deadline for entries in AISC’s 2014 IDEAS2 Awards has been extended to Monday, December 9. The annual competition is the U.S. steel industry’s highest award for steel-frame building projects and recognizes all members of the project’s team involved with the structural framing system.
AISC encourages architects, engineers, designers, constructors, fabricators and owners to enter building projects that meet the following criteria:
- A significant portion of the framing system of the project must be wide-flange or hollow structural steel sections
- Projects must have been completed in the U.S. between January 1, 2011 and December 31, 2013.
For more information on the awards program and to access the online entry form, go to www.aisc.org/ideas2.
For questions please contact AISC’s Larry Flynn (email@example.com) or Jenny McDonald (firstname.lastname@example.org).
FABTECH Shines Optimistic Light on Future of U.S. Manufacturing
Posted by Tasha Weiss on November 26, 2013 at 5:15 PM.
Last week’s FABTECH conference and expo set records for the highest number of attendees, exhibitors and floor space in the show’s history. Show organizers reported that 40,667 people attended and 1,573 exhibitors displayed their products and technologies across 650,000 sq. ft of floor space at Chicago’s McCormick Place; all signs that U.S. manufacturing may have a bright future.
Featured panelists at the conference’s State of the Industry - Executive Outlook Roundtable session agreed that the U.S. is in a “manufacturing renaissance.”
Jeff Oravitz, president and CEO at MetoKote Corporation in Lima, Ohio, said the U.S. manufacturing sector renaissance is being driven by a surge in low-cost energy production. He explained that many American companies that survived the 2009 downturn ratcheted up productivity and made themselves more competitive, and he believes that growth is sustainable as long as the U.S. addresses the skilled labor shortage and the country’s infrastructure needs.
Bill Adler, president of Stripmatic Products in Cleveland and chairman of the Precision Metalforming Association (PMA), believes there is certainly a manufacturing renaissance in many areas, thanks in part to the creation of new technologies. However, he is more cautious. Using a baseball analogy, he said that since the 2009 recession, manufacturing has “hit a single and is at first base.” But we need to be careful “not to get picked off trying to go to second.” Manufacturing must still figure out how to be globally competitive.
The session moderator, Alan Beaulieu, president of ITR Economics, commented that the manufacturing renaissance is helped by companies moving production back to the U.S., not because of patriotism but rather because costs are competitive. Oravitz agreed, saying that it bodes well for U.S. manufacturing that supply chains are getting shorter and there is a growing emphasis on quality.
The panel agreed that one factor that can slow the manufacturing renaissance is the shortage of skilled labor in the U.S., which was also the main topic of discussion at the conference’s Solutions for a Qualified Workforce Pipeline panel session. A common theme in both sessions was that the sector must do a better job promoting manufacturing as a career and work with educators and parents to expose the younger generation to today’s modern technologies, innovations and current opportunities available in the industry.
“Manufacturing is an exciting field that offers good jobs with good wages and benefits making cutting edge products using new technologies,” said Oravitz.
The economic session ended with Beaulieu asking the audience for a show of hands of those who are optimistic about the future of manufacturing; more than half raised their hands.
Next year’s FABTECH will take place November 11-13 in Atlanta as well as internationally: FABTECH Canada will take place March 18-20 at the Toronto Congress Centre. On April 10-12, the inaugural FABTECH India, co-located with the India Institute of Welding’s Weld India Exhibition, will take place in New Delhi. And FABTECH Mexico will be held on May 6-8 at the Centro Banamex in Mexico City.
For more information on FABTECH, visit www.fabtechexpo.com.
AISC Has a New Face in the Upper Midwest
Posted by Tasha Weiss on November 25, 2013 at 5:30 PM.
Matthew D. Brady, P.E., LEED Green Associate, has been promoted to Upper Midwest Regional Engineer in AISC’s Market Development department, replacing Monica Shripka. He represents AISC in the states of Illinois, Indiana, Ohio, Michigan and Wisconsin, educating project decision makers on the advantages of designing and building in structural steel. Most recently he worked as an advisor in AISC’s Steel Solutions Center, developing conceptual solutions for a variety of steel structures including parking garages and multi-story residential, office, industrial, educational and healthcare buildings.
“Matt has been with AISC for nearly three years as a Steel Solutions Center Advisor and is very qualified to take on the role and challenges this new position brings,” said Tabitha Stine, S.E., P.E., LEED AP, AISC’s director of technical marketing. “He brings strong interpersonal skills, a broad background in the steel industry and experience with our members, and vast technical knowledge to educate decision makers on the benefits and expertise in using structural steel. Matt will be a great asset to our field staff team, and we look forward to him helping increase the market share of fabricated structural steel in the region.”
Prior to joining AISC he worked in a variety of roles including construction, forensics and design, both as a consulting engineer and an internal designer for A/E firms. He has worked on the design of bridges, buildings and non-building structures, many of which involved steel design, detailing, fabrication and erection. He earned his bachelor’s and master’s degrees from the University of Illinois at Urbana-Champaign, and for the past 10 years he has served in the Illinois Army National Guard including a tour to Afghanistan in 2008-2009.
“The past three years as a Steel Solutions Center Advisor have provided me with the opportunity to learn about the steel industry from the experts here at the American Institute of Steel Construction,” commented Brady. “The perspective I’ve gained since my start has broadened my knowledge and given me insight on how AISC supports the design and construction industry. As Upper Midwest Regional Engineer, I will be working with architects, engineers, owners, contractors and steel fabricators. Together we will work to help design teams make informed decisions and find efficient, cost effective solutions to their building projects. There’s always a solution in steel!”
Brady grew up in Mount Prospect., Ill., and currently lives in Evergreen Park.
You can follow him on his AISC “My Region” Upper Midwest page or on Twitter @UpperMidwestRE.
AISC Regional Engineers cover eight different geographic regions across the U.S. This group of talented engineers gives around 50 presentations each per year to companies and project teams that are interested in learning more about a variety of topics related to the use of structural steel. Such topics include understanding the steel supply chain, current market conditions, sustainability, AESS (architecturally exposed structural steel), BIM (building information modeling), innovations in low floor-to-floor systems for residential applications, and innovations in parking, healthcare and office structures.
They spend a large amount of time traveling, working with steel fabricators in the region. They also work closely with the AISC Steel Solutions Center to provide cost and schedule information for customized conceptual studies to assist decision makers in exploring a steel alternative for their next project.
To learn more about AISC’s Regional Engineers and to see who’s in your region, visit www.aisc.org/myregion.
Steel Structure Trivia: Nodes at NASCC
Posted by Tasha Weiss on November 22, 2013 at 1:00 PM.
Here’s MSC’s special November NASCC Steel Structure Trivia question! The above photo shows one of the three, massive cast steel nodes - engineered, detailed and supplied by Cast Connex (an AISC member) — that connect three, 70-ft-tall architecturally exposed structural steel (AESS) “delta frames,” which suspend an 11-story reinforced concrete office tower above two heritage structures as part of the Queen Richmond Centre West building project in Toronto. During NASCC: The Steel Conference, attendees have the opportunity to attend a construction site tour and presentation that will focus primarily on the design and construction of the delta frames featuring the cast steel nodes. Your trivia question is: How many pounds does each identical cast steel node weigh? Photo: Courtesy of Cast Connex
Each cast steel node weights 35,000 lb (or 17.5 tons)! Congratulations to our winners: Troy Ernst, a senior estimator at AISC-member fabricator Stein Steel and Supply Company, Atlanta; Donna Adams, a senior associate at DMWPV (Dunbar Milby Williams Pittman & Vaughan), Richmond, Va.; and Monir Matta Mekhaeil, structural design manager - building projects, at Lusail Real Estate Development Company, Doha, Qatar. They’ve won complimentary full registration to NASCC: The Steel Conference in Toronto, March 26-28, at the Metro Toronto Convention Centre.
You can see the Queen Richmond Centre building project for yourself at The Steel Conference. There is no charge to attend this tour. However, registration is required and capacity is limited, so be sure to register early!
The construction site tour and presentation will focus primarily on the design and construction of the delta frames, which feature the massive 35,000-lb cast steel nodes. Also discussed will be the “table-top” steel platform, which was designed to integrate with the reinforced concrete tower above. The delta frames are primary elements of the gravity and lateral force resisting systems for the building. Due to the extreme magnitude of loading, the delta frame members and cast nodes are concrete filled for composite action while intumescent coating provides fire resistance.
You can also watch the installation of the three, 70-ft-tall, AESS delta frames featuring the cast steel nodes in Cast Connex’s five-minute time-lapse video of the project.
Help Us Choose Our New MSC Logo
Posted by Tasha Weiss on November 21, 2013 at 10:23 AM.
We’re updating our Modern Steel Construction logo, and we’d love your input!
How? Visit AISC’s Facebook page (direct link to choose our logo: www.modernsteel.com/ChooseOurLogo) and “like” the image of your favorite MSC cover; you can only vote once.
The most “liked” logo will be unveiled on the cover of our January 2014 issue.
Anyone with a Facebook account can “like” the images to vote, so feel free to share the link with your friends!
Don’t have a Facebook account but you have a Twitter handle? You can “tweet” @aisc or @modernsteel with the number of your favorite logo in the order of cover images contained in the “Choose Our New Logo” photo album at www.modernsteel.com/ChooseOurLogo.
Voting will be open until next Wednesday, November 27.
Questions? Email AISC’s Victoria Cservenyak at email@example.com.
Vote for Your Favorite BIM Project by Nov. 30
Posted by Tasha Weiss on November 19, 2013 at 5:46 PM.
Online voting for this year’s Tekla Global BIM Awards is open to the public until November 30.
This annual international competition showcases many of world’s most impressive structural designs modeled by Tekla (an AISC member) software. These include a variety of building and construction projects, from industrial projects to bridges and stadiums.
Project entries are winners of the local BIM Awards competitions held earlier this year and are divided into five categories: Total BIM Projects; Engineering Projects; Cast in Place Projects; Steel Projects; and Precast Projects.
This year, 46 projects from 18 countries are competing in the global competition — 21 of which are steel. The steel category presents exceptionally challenging or progressive steel projects modeled and managed using Tekla software.
The winners of each category in the competition will be decided by a jury of leading BIM experts, both from inside and outside Tekla.
One model will be awarded as the public favorite project through web voting. All web voters will be entered into a drawing for a chance to win a Motion J3600 Tablet PC; you can only vote once.
For additional information and to vote for your favorite project entry, visit www.tekla.com/global-bim-awards-2013/ind
ex.html. The winning projects will be announced in January.