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Dave Callan, P.E., LEED® AP

Callan is the director of Sustainable Design & High Performance Building Technology and serves as the firm’s assistant chief engineer and a member the Green Critical Facilities Committee. His focus centers on integration of innovative building systems, energy management techniques, advanced simulation tools, and sustainability design. He has researched and developed analysis techniques for new building technologies including building envelope systems. His work was recently honored with an ASHRAE Excellence in Engineering Award. He is a GSA Design Excellence Peer and was named as one of Building Design + Construction Magazine’s Top 40 Under 40.


When Critical Meets Green

April 1, 2007
This thorough article provides an overview contrasting traditional design elements with approaches not usually selected for mission critical facilities. From ventilation to piping to chiller configuration to water usage, nothing is taken for granted - except the need for reliability and the desire to increase efficiency. The authors, from Syska Hennessy Group, also discuss their firm’s Green Critical Facilities Committee and how it works within the framework of the conventional process.  
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ES Gallery: Snapshots & Systems

Check out highlights from projects featured in our magazine this year!
3/27/14 11:00 am EST

How to Calculate Backup Power Supply Requirements for Your Facility

On-Demand This webinar reviews how to determine power requirements of facility loads; electrical characteristics and impact of different types of loads such as large motors and UPS systems on power supply sizing; acceptable power sources and other constraints applied by building codes; and how software tools can be used to simplify the process of calculating backup power requirements.  


Engineered Systems Magazine

ES April 2014 cover

2014 April

Check out the April 2014 issue of Engineered Systems, with features on backup power supply requirements, cyberattacks, and much more!

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Design Flaws

Following up on Howard McKew's April "Tomorrow's Environment" column: Have you ever thought twice about reporting problems with another firm's design? What did you do?
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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.

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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!


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