The membership of Allied Building Metal Industries Inc. were dismayed at the contents of your recent editorial "Making a City Safe for Cranes," in which you suggest that users should de-rate a crane's load chart so every lift in New York City defaults to a critical lift.Crawler cranes already have a standard 75% reduced chart; truck cranes are at 85%. A further reduction to 75% would limit the crawler capacity to 56%. There is already a built-in factor of safety in the manufacturer's approved charts. Cranes are typically load-tested to at least 130% of rated capacity. A further reduction to
Related Links: Engineering News Record Architectural Record The story "OSHA Points to Process Errors in Cincinnati Casino Collapse" contained errors. The photograph depicted another Horseshoe Casino, which collapsed last December in Cleveland. Also, Messer Construction Co. received its last OSHA violation in January 2006, not May 2006 as the article stated. The violation was to be deleted as part of an informal settlement but remains visible in OSHA's online database.
In the story "As Fluor Turns 100, CEO Seaton Notes Successes, Challenges," the Q&A with Fluor Corp. Chairman and CEO David Seaton requires the following clarifications.A reference to "greenhouse gas" should have instead read "greenhouse-gas regulation."The sentence "The [Obama] administration said it wants to drive gas prices up to push renewables" refers to a 2008 statement by Energy Secretary Steven Chu.The sentence "Fluor has perfected the public-private approach [to infrastructure finance]" should have stated "sort of perfected."A quotation used should have been stated as "You don't earn a penny unless you sell something."
In response to your article, "Special Report: Which Way the Winds Are Blowing on P3s", the American Subcontractors Association would like to raise your awareness about a concern that construction subcontractors and suppliers have with public-private partnerships (P3s).Specifically, ASA is concerned that existing federal and state laws establishing payment assurances for subcontractors and suppliers may not apply to projects financed through P3s.State mechanic's lien laws generally do not apply to construction on public land; yet federal, state or local governments often own the real estate on which projects financed through P3s are built. Statutory payment bonds may be required on
Related Links: Concrete Goes to College I would like to respond to the numbers game and the "science" that the Portland Cement Association has initiated as reported in Tudor Van Hampton's article "Concrete Goes to College" (ENR 1/23/p. 8).First, Congress is not in the business of selecting materials for roadbuilding. Nor should it be. If congressmen were to dig into life-cycle cost analysis (LCCA) as presented by Massachusetts Institute of Technology's Concrete Sustainability Hub (CSH), funded by PCA, they would find the idea of asphalt pavement costing double that of concrete pavement ludicrous.Notice that the CSH has used theoretic estimations
I read with interest your story "Tutor Perini OKs CEO's Stock Sale." This could not be further from the truth.The entire story focuses on the removal of restrictions on my stock as if it were all about the sale of the balance of my interests in Tutor Perini [as opposed to] the manner in which the action was [intended, which was] to remove the restrictions so that if I chose to, I could pledge stock for loans, I could use the stock as an asset, or [I could] pledge it for whatever business reasons I needed to. However, at no
“New Hydro Capacity Coming From Existing Dam Retrofits,” an article that highlighted a hydropower retrofit in Iowa, incorrectly named the firm contracted to do the engineering work. That firm is MWH, headquartered in Broomfield, Colo.
Related Links: Dont Blame The Workers As a civil engineer and a licensed professional engineer, I found your article “Rethinking Wrench Time” to be of great interest. I also have a master's degree in industrial engineering, specializing in quality control, and am a longtime member of the American Society for Quality.For many years, I have been promoting the application of quality-control principles to construction work, and I think this article gives an example of how it may be accomplished. To its credit, the [New York City Transit Authority, or NYCTA] now requires contractors to provide a quality-control manager on major
The story summarized below was written by ENR staff and contributors. The anonymous responses posted by ENR.com readers have been edited. The Diversity ReportIn this special feature, ENR reported that while some firms merely comply with federal rules regarding minorities and anti-discrimination laws, other firms actively and consciously make diversity a core value.Donna Riley of Smith College describes engineering as “a system that is still not inclined to be welcoming.” What a disgusting comment. I have been an engineer for over 40 years with many firms and have yet to experience an engineering organization that discriminated against anyone in any
JULY 31-3 Energy and Water 2011: Efficiency, Generation, Management and Climate Impacts Conference Hyatt Regency McCormick Place, Chicago. This event will bring together researchers, regulators, designers, technology developers, students, municipal agencies and utilities, facility managers and operators, industry representatives and other environmental professionals from around the world to share and debate the current state of the water-energy nexus. Technical presentations will be complemented by open discussions. For more information, visit www.wef.org/energy/.AUGUST 3-6 2011 Concrete Foundations Association Summer Convention Wintergreen Resort, Wintergreen, Va. The CFA convention is the only national event dedicated solely to the commercial and residential poured-concrete-wall industry. For