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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.

ARTICLES

High-Rise Overhaul

125 South Wacker, a 31-story Chicago high-rise that is halfway through a five-year master plan, represents a massive undertaking both in volume and scope of equip-ment. Simulations and smart project sequencing drive design decisions and funding viability as the work moves through the chiller plant, boilers, BAS, VAV, and conversions for everything from drives and valves to lighting and cooling tower configurations. See how the strategy is boosting performance and tenant flexibility.
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When Critical Meets Green

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!
4/28/15 2:00 pm EST

The Big Data Webinar: Big Data or Big Science?

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Engineered Systems Magazine

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2015 April

Check out the April issue of ES with the cover story: Discovery vs. Disaster: Why You Should Know The Limits Of Your Data Center.
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