Articles by Rebecca Thatcher Ellis, P.E.

Commissioning

Substantial Completion & Knowledgeable Owners

The readers weigh in. In my December 2012 column, I solicited reader feedback regarding substantial completion and the trend of owners accepting buildings as substantially complete when the mechanical and electrical systems are not complete, fully integrated, and functioning properly. 


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Why Are Owners Taking This?

There are some good explanations for a bad trend.


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Commissioning

When “Substantial Completion” Is Insubstantial

A concept created for special circumstances has become a sad S.O.P.
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Commissioning

Documenting Integrated HVAC Controls

When it comes to manual labor, the buck needs to stop somewhere.
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Commissioning

Data Integration During Construction

The commissioning agent can steer this to avoid data paralysis later.
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Troubleshooting Systems With Onboard Equipment Controllers

Skimpy interface with BAS means more points of contention.
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Is Systems Integration Getting Worse?

The latest "progress" has yielded its own growing pains and pressures.
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Heating Hot Water System Trend Analysis

Could detecting a manual override suggest deeper problems?
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Single-Zone AHU Trend Analysis – Cooling

How would you know if you were getting the right result via the wrong sequence of events?
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Single-Zone AHU Trend Analysis

On to a new case after solving a museum mystery …
In this column, I will describe the “issue” disclosed through analysis of the trend graph included in my January 2012 column. I will also introduce a new system and show its trend graph, leaving it up to the reader to discover the operational “issue” illustrated in the graph. The answer will be given at the start of next month’s column.
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