Describe the key differences between unitized and stick frame curtain wall systems in terms of design, installation, and thermal performance.

What is the clear wall R-value of a typical 2X6 stud wall assembly? Assume the following: (1)cavity has dense pack cellulose at R 22 (2)there are 1 percent air gaps in the cavity insulation with a nominal R value of 1 for the air gap (3)the framing factor is 22 percent with an R value of 1.25/inch (4) There is 1 inch of continuous XPS (R5/inch) on the exterior (5)Assume the air films, sheathing, facade, and wallboard add an additional 1.5 R value to the wall. Hint: draw this out. Answer:

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10) Commonly used types of steel fire proofing include? a) Spray-applied b) Encasement in concrete c) Enclosed in multiple layers of Drywall d) All of the Above 11) Deflection track is used to? a) Bend metal studs b) Isolates the partition from deflection preventing structural loads from distorting the partition c) Keeping masonry from uncontrolled cracking d) All of the Above 12) Which is not a type of steel frame buildings? a) Moment-Resisting b) Shear c) Braced d) Post-Tensioned