Construction Materials, Methods and Techniques (MindTap Course List)
4th Edition
ISBN: 9781305086272
Author: William P. Spence, Eva Kultermann
Publisher: Cengage Learning
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Chapter 3, Problem 7RQ
To determine
The factor describing the overall thermal performance of a building
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Chapter 3 Solutions
Construction Materials, Methods and Techniques (MindTap Course List)
Ch. 3 - What are the major material groups?Ch. 3 - Prob. 2RQCh. 3 - What are the mechanical properties that define a...Ch. 3 - How does a tensile stress differ from a...Ch. 3 - Prob. 5RQCh. 3 - Prob. 6RQCh. 3 - Prob. 7RQCh. 3 - What is the most common form of chemical...Ch. 3 - Prob. 9RQCh. 3 - Prob. 10RQ
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- Calculate the thickness of the masonry wall having thermalconductivity of 0.75 W/mK if the heat transfer is to be 80% of theheat transfer through a composite structural wall having athermal conductivity of 0.25 W/mK and a thickness of 100mm.Assume that both walls are subjected to same surfacetemperature.arrow_forwardExplain what is meant by permeability and describe how to interpret the permeability ratings of vapor retarders.arrow_forwardExplain in precise terms the function of a vapor retarder in an exterior wall or roof assembly.arrow_forward
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- Parker County Community College (PCCC) is trying to determine whether to use no insulation or to use insulation that is either 1 inch thick or 2 inches thick on its steam pipes. The heat loss from the pipes without insulation is expected to cost $1.50 per year per foot of pipe. A 1-inch thick insulated covering will eliminate 89% of the loss and will cost $0.40 per foot. A 2-inch thick insulated covering will eliminate 92% of the loss and will cost $0.85 per foot. PCCC Physical Plant Services estimates that there are 250,000 feet of steam pipe on campus. The PCCC Accounting Office requires a 10%/year return to justify capital expenditures. The insulation has a life expectancy of 10 years. Determine which insulation (if any) should be purchased using a ranking future worth analysis.arrow_forwardA well insulated room with a refrigerator running and door open, the air tem-perature in the room keeps increasing, why?arrow_forward4. Using a three-dimensional sketch, show the locations of the air barrier and vapor retarder in a wall assembly framed inwood or cold-formed steel.arrow_forward
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