Articles by Rebecca Thatcher Ellis, P.E.

Commissioning: How Much Of A Good Thing?

Deciding to retrocommission is just the first step.

Read More

Commissioning: When to Retrocommission?

From additions to age, different factors make the argument for or against.

Read More

Commissioning: Core & Shell and Tenant Fit-Out Projects, Part 3

A good manual is almost as important as whether the right people read it.
Read More

Commissioning: Core and Shell and Tenant Fit-Out Projects, Part 2

Last month, this column addressed special considerations for developing the owner’s project requirements/DID for projects that are designed and constructed as a core and shell (C&S) by the developer with customized tenant fit-out (TFO) of occupied spaces as they are leased. Documenting the owner’s project requirements/design intent is valuable for any project and is imperative for commissioned projects.
Read More

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.
Read More

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?
Read More

Commissioning: Is The DID Done?

Design intent and owner’s project requirements: understand the role of each.
Read More

Commissioning: RETROCOMMISSIONING <i>New Buildings</i>

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.
Read More

Commissioning: Deferred or Phased Testing

Deferred testing is performing FPT after substantial completion. Whereas systems performance testing should occur prior to the owner accepting the systems from the contractors, there are some instances where testing at the end of construction is either impractical or not meaningful.
Read More

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.

Read More

Multimedia

Videos

Image Galleries

ES Gallery: Snapshots & Systems

Check out highlights from projects featured in our magazine this year!

Engineered Systems Magazine

ES October 2014 cover

2014 October

Check out the October 2014 issue of Engineered Systems, with features on economizers, pump operations, and much more!

Table Of Contents Subscribe

System Design

Based on your experience and knowledge level, are you currently comfortable designing or maintaining a system incorporating VRF or radiant ceiling panels?
View Results Poll Archive

THE ENGINEERED SYSTEMS STORE

The_Green_Energy_Management
The Green Energy Management Book

Learn from our experts how to evaluate job opportunities, market your services, sell a Walk-through Survey, target areas for an Energy Audit, calculate energy savings, do retrofit work, and win continuing contracts for retrofit work.

More Products

Clear Seas Research

Clear Seas Research ImageWith access to over one million professionals and more than 60 industry-specific publications,Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

Tomorrow's Environment Podcast

This series from longtime columnist and chronic forward-thinker Howard McKew covers a lot of ground -- from retrocommissioning to systems training, on toward checklists for drawings and tips for meeting minutes. Click HERE to be taken to the podcast page!

STAY CONNECTED

new Facebook icon Twitter icon YouTube iconLinkedIn icon  Google+