Any plan advanced by the U.S Army Corps of Engineers or others to re-reverse the flow of the Chicago canal system will hasten the demise of Lake Michigan

"BIM Consensus Standard Is a Step Forward but Not a Major Leap Toward Interoperability" should have stated that Nemetschek Vectorworks and Graphisoft are owned by the same company, Nemetschek Group. Also, the headquarters of FM:Systems is located in Raleigh, N.C."Cracks Slow Pontoon Job" erroneously stated Kiewit-General is widening state Route 520 east of the floating bridge. Eastside Corridor Constructors, a joint venture of Granite and PCL, is on that job. Alleged on-the-job drinking did not involve anyone from ECC.

The cover story "Boardrooms Raise the Bar" was interesting and made good sense, but it missed the main points for [director] qualifications today: truthfulness, honesty, ethical behavior and moral integrity.Harry Watkins, P.E., Retired President Watkins Engineering Consultants Inc.Birmingham, Ala.

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.