Materials and Fastening: Corroded Steel Bearings are Focus of I-35W Bridge Collapse

Spotlight Story:

Focus of I-35W Bridge Collapse: Corroded Steel Bearings Steel bearings designed to transfer huge longitudinal load shifts will get special focus as a triggering factor in the collapse of the I-35W bridge in Minneapolis Aug. 1. Full Story

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DN Special Report: Minneapolis Interstate 35 Bridge Collapse
Updated: The horrific and fatal Minneapolis, MN, Interstate 35 bridge collapse has left inspectors, the state and engineers alike wondering what went wrong. Check in with Design News for engineering insights into this tragedy. Photo gallery, NTSB recommendations and videos included. Read More

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LEAD-FREE ZONE - Are you RoHS compliant? In partnership with Digi-Key
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Where Metal Injection Molding Makes Sense In partnership with Phillips Plastics
When you commit to producing 7.5 million parts for an industry as demanding as auto­motive, you better know what you're doing. Learn why Metal injection molding (MIM) may be the answer in high-volume production of small, complex parts requiring superior strength. Read More

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Did your pay increase measure up to the industry average last year? Based on your level of education and years of service, what should your annual base salary be? What specific skills do engineers need to get ahead in their profession today? The Design News 2007 Engineering Salary Survey has the answers. Get it Now!

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The Latest Materials/Fastening Resources Available:

Complete OEM Supplier Valtra Inc. | Product Catalog Buy direct from the manufacturer for the best cost savings. The catalog features a wide range of high quality, very competitively priced adjustable handles, handwheels, levers, cranks, knobs, leveling pads, tooling balls, and precision locating elements. Full line of tooling components, including eyebolts, t-bolts, and unique threaded fasteners. High volume custom orders welcome.


Tolerances: Round Tubes Hydro Aluminum | Design Guide This resource includes diagrams on tubes includes diameter, wall thickness, ovality and eccentricity.

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Focus of I-35W Bridge Collapse: Corroded Steel Bearings
Special Alloys Target Aerospace, Leisure Markets
Russian Titanium Plays Big Role in Dreamliner
Big Dig Epoxy Provider Facing Manslaughter Charge
Green Toys Feature Biobased Plastics
Aluminum Body Cuts Weight On Mercedes Models
Big Dig Epoxy: Who Knew What, When?
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Doug Smock,
Contributing Editor

Steel bearings will get special focus as a triggering factor in the collapse of the I-35W bridge. What else do you think inspectors should zero in on as possible causes for the failure? E-mail me.



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