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Articles by Rebecca Thatcher Ellis, P.E.

Commissioning: Core & Shell -- and Tenant Fit-Out Projects

It is exciting to see that the benefits of commissioning are being realized by more and more commercial real estate developers and their tenants. A traditional speculative office building presents special challenges for the commissioning process. In the commercial real estate market, many office buildings are constructed as a core and shell (C&S) by the developer with customized tenant fit-out (TFO) of occupied spaces as they are leased.
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Commissioning: The Least You Can Do

Last month, I talked specifically about ASHRAE Guideline 0-2005, The Commissioning Process and its owner’s project requirements document. As quoted from the Guideline, the ASHRAE document “is not definitive, but encompasses areas where there may be a variety of approaches, none of which must be precisely correct.” I’d like to explore that a bit more this month. How much latitude is there in the term “commissioning” for new construction? If there are no approaches that are “precisely correct,” are there any approaches that should be considered incorrect?
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Commissioning: RETROCOMMISSIONING New Buildings

I just completed reports for two retrocommissioning studies for different building owners. An interesting - and potentially puzzling - similarity between them was that they were both for relatively new buildings. One building had been completed just one year before the owner decided retrocommissioning would be a good idea. The other was a 4-yr-old building. Both were larger than 100,000 sq ft.
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Commissioning: Fair and Balanced

In my October and November columns, I explored the complexities associated with motivating contractors to install, start up, and test new building systems as required to have the commissioning testing and demonstration be successful the first time. If there is an incentive for deficiency-free test results, the commissioning professional needs to be wary of the contractors wanting to stop and “fix” deficiencies during the testing process.

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2015 April

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