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ENR Clarifies Key Issues Unresolved in BIM, IPD

I wanted to express my gratitude for the series on building information modeling and integrated project delivery that Nadine Post delivered through the pages of ENR, most recently in “Integrated-Project-Delivery Boosters Ignore Many Flashing Red Lights”. Post brings a level of discernment that was lacking in other attempts to cover these complex, interrelated subjects.

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The primary difference between this approach and the others is a willingness to address specific areas in which these tools and forms of agreement require further development. The credibility of ENR and the objectivity of the articles encourage the building community to tackle issues that may have been dismissed in our collective zeal to be seen as supporters of collaborative design and construction. BIM and IPD are here to stay, and we still have work to do in addressing the finer points of interoperability and risk management.

Bob HazLEton
Vice President,
The Herrick Corp. Stockton, Calif.

You incorrectly refer to the “Associated General Contractors of America’s ConsensusDoc 300” in your story on integrated project delivery. ConsensusDOCS is a coalition of 23 organizations that write and endorse ConsensusDOCS contracts. AGC is a proud endorser.

Brian Perlberg
Executive Director
Arlington, Va.

No Ash Danger in Masonry

Thank you for the editorial on fly ash, “Let’s Clear Up the Fly-Ash Dilemma: Is It a Danger or Not?” , but I must take issue with comments related to the use of fly ash and bottom ash in manufacturing masonry units. Both have been used for this purpose for many years with no documented damage. The ash is bound within the unit, virtually eliminating leaching.

Thomas H. Adams
Executive Director
American Coal Ash Association Aurora, Colo.


In the Boston pipe-rupture story, the Massachusetts Water Resources Authority spokeswoman should have been identified as Ria Convery.

The vice president of federal programs for gkkworks, Irvine, Calif., is William “Bill” Line.


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