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Category Archives: MasterFormat

Stay in Control: Specifying building automation systems for cost savings

The Sheraton Phoenix Downtown Hotel uses a BACnet (data
communication protocol for building automation and control
networks) compatible building automation system (BAS) for
energy savings and occupant comfort. All images courtesy Alerton

Building automation systems (BAS) have evolved rapidly over the past several decades, expanding beyond HVAC alone to monitoring and controlling numerous other building systems. This article explores the opportunities from implementing BAS in new construction and in building retrofits, the latest features and benefits available, and factors to consider when specifying BAS controllers, software, and wall sensors for commercial and institutional buildings.

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What Do You Mean By ‘Polyurethane?’

All photos courtesy Quest Construction Products

Polyurethanes have the broadest range of any product group, but they tend to combine toughness and flexibility with adhesive properties. This article examines the chemistry behind these coatings, seeking to give specifiers the information needed to select the right material for a project.

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Using Temperature to Control Condensation in Cold Climates

Photo © BigStockPhoto/Pavel Losevsky

Initially, water vapor diffusion was seen as the likely culprit for condensation problems; designers and consultants spent hours running and analyzing wall assemblies using the dewpoint method. With such analyses came the concept the wall system should be tuned for maximum condensation resistance by altering or selecting the appropriate permeability of the wall components. However, to create a truly robust wall system with the greatest condensation resistance and drying potential, designers need to look at altering the temperature profile of the wall assembly by moving insulation as far as possible to the exterior of the wall.

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Metal Wall Panels on the Roof: How to achieve durability and reliability using sheet metal

All images courtesy Simpson Gumpertz & Heger

Some modern architectural designs use newer materials and metal panel assemblies for roofing applications, many of which are not intended to be used as roofing and, therefore, may not be well-suited for it. One such trend is the use of architectural metal wall panels as roofing to create a visually seamless transition between building walls and roof surfaces such as low-slope setbacks in the façade. This can impose unique challenges for the designer and contractor.

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Solar Air-heating Systems 101: Cigas Machine Shop

A total of 1084 m2 (11,670 sf) of black, transpired solar collector
wall panels were installed at the Cigas Machine Shop in
Pottstown, Pennsylvania.
Photo courtesy ATAS International

The Cigas Machine Shop in Pottstown, Pennsylvania, is located in a building previously owned by the Bethlehem Steel Corporation, with parts of the structure dating back to the late 1880s. Back in that era, Bethlehem Steel was involved in the production of fabricated components used in the construction of the Golden Gate and many other familiar bridges.

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Solar Air-heating Systems 101: Ensuring efficient and economical renewable energy

All images courtesy ATAS International

A transpired solar collector system utilizes perforated metal wall cladding to heat outside fresh air via sunlight. This technology can help reduce winter heating costs by approximately 30 percent, qualify for government grants and incentives for renewable energy, and generally has a payback of three to eight years. These types of systems have been used on a wide variety of facility types, in both new construction and retrofit applications. Buildings with a large volume of air to heat, and/or requiring a high number of fresh air exchanges are excellent candidates for a transpired solar collector.

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