IQS NEWSROOM

A source for industrial products & services news and events.
Latest Insights in the Evolving Digital World

Heavy Duty Riveted Bridge Deck AASHTO H20 Loading and Fatigue Testing: Long Service Life Explored

Heavy Duty Riveted Bridge Deck Grating has been field proven to provide long service life for heavily loaded bridges. Examples presented include riveted steel decks that are in almost new condition after over 15 years in service and others that are still in good condition after nearly 60 years of service with no evidence of significant damage or deterioration. This is in stark contrast to the service life exhibited by some welded type bridge decks. This paper begins to examine the fatigue resistance of heavy duty riveted style bridge decks. The results from static load and fatigue cycle testing of riveted grating under AASHTO H20 loading with a 30% impact factor are presented. The testing conducted during 2009 and 2010 at the University of Akron Civil Engineering Lab has examined the static behavior of the riveted grating and has included fatigue testing of full-scale decks to well over 1 million cycles. The extra heavy load levels and worst case load location were used to accelerate the testing, and show where cracks might originate. The results also provide insight into the best methods for attachment of the riveted grating to the support structure.

folder White Papers

The Plastic Pallet And Fire Protection

This paper attempts to identify some of the specifics of the process used to obtain approval for use of plastic pallets as equivalent to wood pallets for use in warehouse storage. This paper is written to look at the issue in general and is not intended to cover all storage situations. Your specific situation should be evaluated by a fire protection specialist. Most plastic pallets are molded out of polyolefin materials such as high density polyethylene or polypropylene. These materials are more flammable than the wood used to make pallets. Over the years the industry has argued with the fire protection establishment that plastic pallets, while they burn hotter than wood, are much more difficult to ignite. Fire protection people counter with the fact that most warehouse fires are arson and if an arsonist wants to start a fire they will do what ever they need to do to get a fire started.

How to Write a Specification For and Evaluate a Design/Build Cleanroom Proposal

With the increasing emphasis on utilizing the design/build method of delivery in the construction industry, and the desire to evaluate proposals using that old adage of ‘apples to apples’, it becomes incumbent upon the owner to create a specification which will insure that contractors have the appropriate information to propose the facility accurately…

Featured Industries
keyboard_arrow_up