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Solving Indoor Airborne Disease Transmission Problems

August 1, 2011

By Steven Welty LEED® ap,

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The author describes how toilet flushes aerosolize germs sending them airborne to soar around and infect their next victim(s) because bathrooms are designed backwards. Learn novel ways to control and clean bathroom air to help control airborne disease transmission problems. So feel free to hold your nose as you learn about how you can help protect people’s health within your client’s buildings.

Guest Column: Perforated Materials In High-Purity IAQ Applications

July 1, 2011

By Shawn Windley

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Nowhere is the quality of indoor IAQ more important than in the operating room (OR) of a hospital.

Plenum Requirements For Egress Corridors In Health Care Environments

July 1, 2011

By Robert Trotter CBO, CFM

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Incorporating a plenum can have its design advantages, but corridors serving adjoining areas of health care occupancies are prohibited from being used for a portion of an air supply, air return, or exhaust air plenum. This article and its illustrations can strengthen your grasp of the related NFPA code details and exceptions so you can design and ventilate properly for this special population.

Case In Point

Low-speed fans team with UV light to improve IAQ at Rwandan hospital

July 1, 2011

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Low-speed fans provide needed ach at this remote mountain hospital. All buildings, regardless of age, are susceptible to IAQ deficiencies. Chemical exposure from new construction, tight building envelopes, and humidity

Seismic & Wind Concerns

May 5, 2011

By Steven G. Liescheidt, P.E., CSI-CCS, CCPR

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Earthquakes and strong gusts are threats in the physical world that creep into the HVAC design world of isolators, supports, and special louver considerations. Furthermore, a new legal world in terms of codes, insurance, and liability can leave inattentive engineers, owners, and manufacturers quaking in their boots. Read on to stay safe in more ways than one.

Case In Point

Air Force hangars in Alaska salute new heating system's tempering effect

May 1, 2011

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A heating system evened out the temperature and improved working conditions at this Alaska Air Force hangar.Extreme sub-arctic temperatures at Eielson Air Force Base near Fairbanks, AK, where winter temperatures

Ventilation Leads Kerry's Recipe For Success

May 1, 2011

By Rick Hombsch P.E. and Kevin Pope P.E.

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For a consumer food group’s very mixed-space campus, HGA’s careful outdoor air strategy got support from smart boiler, chiller, and lighting design to create performance tailored for the client while comfortably exceeding LEED^®and ASHRAE 90.1 requirements.

VAV For Laboratory Spaces

April 1, 2011

By Steven G. Liescheidt, P.E., CSI-CCS, CCPR

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Terminal devices, pressurization, supply air, proper exhaust … those factors and more go into a well designed VAV system for sensitive lab applications. From general tips to changing details such as fabric duct elements, booster fans, and a new AMCA standard, the author equips you to succeed in one space that is no place for experimentation.

Case In Point

Life sciences lab handles OA load with humidification

April 1, 2011

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A fog humidification system installed at this Michigan lab is controlled by a BAS.Pall Life Sciences is a leading global provider of filtration, purification, and separation technologies to the diverse

Florida school cuts outside air cooling costs 70%

April 1, 2011

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An ERV system saved this Florida school $500 a month in utility costs.The developers of Turtle River Montessori School in Jupiter, FL wanted students to have the best possible IAQ.

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