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William G. Porter, P.E., DBIA

Porter is senior vice president and mechanical engineer with the architectural and engineering firm, Hayes, Seay, Mattern & Mattern, Inc., (Virginia Beach, VA) and is the firm’s principal in charge of justice and public safety projects.


Keeping Your 'Cool' In Prison

Think of all the considerations that go into a good design, and then add a separate and unusually vital layer of security concerns, and that begins to approximate the situation for correctional facility HVAC. This article evaluates many common options, giving particular attention to equipment placement and which ventilation strategies adapt well to life behind bars.  
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Check out highlights from projects featured in our magazine this year!

Engineered Systems Magazine


2015 January

Check out the January issue of ES with features on commercial kitchen exhaust ducts, doubling energy productivity, pressurization smoke control systems, and more!
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System Design

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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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