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Light Gauge Residential And Commercial Research Paper

One of the biggest innovations that may interest engineers is the development of software and manufacturing machinery that is used with the steel making and engineering in order to guide design and structure.

Many of these innovations can be applied to all types of steel, particularly since manufacturers can add bends, ribs, and stiffeners to steel in order to create more strength, weight, and durability. (Structure. http://www.structuremag.org/article.aspx?articleID=467)

- What are the methods for mitigating thermal bridging ? i.e. what is the best way to keep temperatures from increasing/decreasing across a stud due to conduction- will a thin piece of plastic help?

Some stud manufacturers have been putting slits in their studs to cut down on the thermal heat transfer; others have used stiffened holes for the same reason.

Some Scandinavian manufacturers employ a clinching technique that rolls the stud flange back onto the web which not only increases strength of the steel, but permits more of the web to be removed in order to reduce thermal transfer. ( Structure). Usually also, the steel can be -- and is -- sheathed with foam insulation to prevent thermal conductivity.

- What is the preferred method of wall insulation for metal studs used in 1) residential construction, 2) commercial construction Is it still batt insulation? Why?

The preferred method is putting an inch thick layer of foam...

Some fill the cavities too with insulation. Fiberglass batt insulation is no longer used since it releases fiberglass particles which may present a health hazard to workers installing the fiberglass. Furthermore, batt insulation can get damp form internal or external moisture becoming moldy. This poses a lot of indoor air quality problems (Kohler, http://www.kohlerandlewis.com/pdf/SteelStuds.pdf). A similar insulation technique is used for commercial buildings. Some use Invelope which is a unique steel and foam panel specifically installed behind the veneer in metal-framed commercial buildings . One of the most common insulation techniques for commercial buildings is a combination exterior drywall; an air, water, and vapor barrier; and a rigid or semi-rigid insulation board . This creates a thermal break between insulation and studs. (buildinggreen.com http://www.buildinggreen.com/auth/article.cfm/2009/8/28/Invelope-a-Breakthrough-in-Exterior-Commercial-Wall-Assemblies/)
Sources buildinggreen.com

Excalibur. http://www.excalibursteel.com/better.htm

Kohler, JT. INSULATING STEEL STUD FRAMED WALLS http://www.kohlerandlewis.com/pdf/SteelStuds.pdf

Macerewich, M. Framing with light guage steel http://bestdrywall.com/files/Switchingto%20Steel.pdf

Structure. Innovations in Cold-Formed Steel Framing

http://www.structuremag.org/article.aspx?articleID=467

Sources used in this document:
Sources buildinggreen.com

Excalibur. http://www.excalibursteel.com/better.htm

Kohler, JT. INSULATING STEEL STUD FRAMED WALLS http://www.kohlerandlewis.com/pdf/SteelStuds.pdf

Macerewich, M. Framing with light guage steel http://bestdrywall.com/files/Switchingto%20Steel.pdf

Structure. Innovations in Cold-Formed Steel Framing
http://www.structuremag.org/article.aspx?articleID=467
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