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September 2016

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This month’s newsletter includes information about:

    • NSBA Issues updated Skew and Curved Steel I-Girder Bridge Fit Document
    • Fall 2016 AASHTO/NSBA Steel Bridge Collaboration Meeting Schedule Released.
    • SteelDay is Next Friday! Do you know where you’ll be?
    • Construction Crews Find Historic Steel Marks while Repainting Bridge
    • Mark your Calendar for these Upcoming Events.


NSBA Issues updated Skew and Curved Steel I-Girder Bridge Fit Document

The NSBA releases an updated Skewed and Curved Steel I-Girder Bridge Fit document. The new document, available for download through the NSBA website offers additional guidance on proper detailing of bridges to ensure constructability.

Fit or fit condition refers to the deflected girder shape under specific loading conditions. This is important to steel bridge fabricators because it determines how the cross-frames and diaphragms are detailed to fit to the girders. In addition, fit affects bridge constructability by determining how much force is necessary to align the girders and cross-frame elevations.

The updated Fit document offers additional and expanded insights into how bridges should be detailed. Updates include minor changes to recommended fit conditions for horizontally curved bridges based upon recently finalized NCHRP 20-07. To complement the Fit Document, the NSBA has released a long version that delves into the theory behind the numbers. Both documents are available for free through the NSBA website.

Visit www.steelbridges.org/bridgefit to download the short form version.



Fall 2016 AASHTO/NSBA Steel Bridge Collaboration Meeting Schedule Released

The fall AASHTO/NSBA Steel Bridge Collaboration Meeting will be November 1-3 at the Hilton at the Ballpark in St. Louis, MO. All collaboration meetings are free and open to anyone interested in attending. So that we can better plan/schedule the event we request that you register using the following link before October 7, 2016.

Meeting Registration Link

Tuesday November 1 (1:00pm to 5:00pm)

Time      Meeting  Room 
 1:00pm to 4:00pm TG16 Orthotropic Deck Panels  Gateway 2 
 1:00pm to 4:00pm TG1 Detailing  Gateway 3&4 
 3:00pm to 5:00pm TG15 Data Modeling for Interoperability              Gateway 3&4            
5:30pm to 7:30pm     Collaboration Executive Meeting Gateway 3&4 

Wednesday November 2 (8:00am to 5:00pm)

Time      Meeting  Room 
8:00am to 12:00pm TG2/TG5 Fabrication Specification Gateway 2 
8:00am to 10:00am  TG12 Design for Economy & Constructability  Gateway 3&4 
10:00am to 12:00pm TG11 Steel Bridge Handbook  Gateway 3&4 
12:00pm to 1:00pm Working Lunch (provided)   
1:00pm to 5:00pm TG8 Coatings  Gateway 2                 
1:00pm to 5:00pm TG10 Erection Gateway 3&4
6:00pm to 10:00pm Dinner (registration requested) TBD

Thursday November 3 (8:00am to 4:00pm)

Time  Meeting  Room 
8:00am to 12:00pm  TG4 QC/QA      Gateway 2                 
8:00am to 12:00pm  TG13 Analysis of Steel Bridges  Gateway 3&4
12:00pm to 1:00pm  Working Lunch (provided)   
1:00pm to 4:00pm  Collaboration Main Committee                             Gateway 2 

Hotel Information
This meeting will take place at the Hilton at the Ballpark

Address: 1 S Broadway, St. Louis, MO 63102
Rate: $125 plus applicable taxes
Reservations: Reservations may be made online through the following link:  http://www.hilton.com/en/hi/groups/personalized/S/STLBVHF-AAS-20161101/index.jhtml

Cut-off Date: 5pm ET October 17, 2016

About the Collaboration
The mission of the Collaboration is to achieve quality and value in steel bridges by standardization of design, fabrication, and erection, and by the sharing of resources. Through the Collaboration, steel bridge professionals work together in a spirit of cooperation and mutual respect to develop details, specifications and practices and to exchange knowledge, technology and expertise.

For additional information visit: www.steelbridges.org/CollaborationStandards 


SteelDay is Next Friday! Do you know where you’ll be?

This year’s SteelDay features more than 40 events taking place all across the country.  SteelDay Eve at the New NY Bridge kicks off the events on September 29.  The event will feature New NY Bridge team members discussing the engineering challenges and innovations that are taking place on the $4 billion Tappan Zee Bridge replacement project.

The bridge events continue on SteelDay with the Ohio Department of Transportation leading tours of the new George V. Voinovich bridge project in Cleveland, Ohio and the annual High Steel Fall Open House in Lancaster, Pennsylvania. Join members of High Steel Structures Inc. for a discussion of the Ohio River Bridges project and facility tours. For those that can’t attend a live event, AISC and NSBA are featuring “Bridging Urban America: The Story of Master Engineer Ralph Modjeski” as the annual free SteelDay webinar.

The film tells the story of Ralph Modjeski, the designer of many of America's greatest bridges. It offers not just awe-inspiring views of these magnificent structures but also tells the story of Modjeski's life as an engineer, entrepreneur, artist, and innovator. "Bridging Urban America" will be shared through a web link active only on SteelDay.

SteelDay is an annual event sponsored by the American Institute of Steel Construction and hosted by its members and partners. SteelDay is the industry's largest educational and networking function, with events occurring all over the country. It's an opportunity for individuals from various professions to see how the structural steel industry contributes to building America.



Construction Crews Find Historic Steel Marks while Repainting Bridge


Courtesy photo

Painting crews working for Allied Painters Corp., of Macomb, found something they had never seen before when they sandblasted the Grove Street Bridge.

What they found was the Carnegie name imprinted on the steel stringers of the bridge, which goes over Deer Creek in Coopersville. 

Andrew Carnegie owned Carnegie Steel Company in Pittsburgh from 1892-1901. When he sold the steel company for $480 million to J.P Morgan in 1901, the deal made Carnegie one of the richest men in the world at the time, according to the Carnegie website. Carnegie Steel became part of U.S. Steel after the sale.

Jimmy Cooper, who works for Allied, said the crew has been painting bridges across the state for decades and has never seen one that was built from steel produced in the Carnegie plant.

They did an internet search of Carnegie Steel and found there are only a few bridges left in the country which were built with steel produced by the Carnegie Steel Company. The most famous still in use is the Brooklyn Bridge in New York.

"The steel still looks like new," Cooper said after sandblasting several layers of paint off the Grove Street Bridge.
The painters said the short span of the bridge - 60 feet - and the fact that there are no expansion joints on either end of the bridge has helped to preserve the steel like new.

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