A wall has a total of 1502 square feet. The insulated portion has R-16 insulation, but 3% of the total area has gaps (R- 3.3) in the insulation and 15% of the total are low spots in the insulation (R-9). What is the average R-value? Answer:

A wall has a total of 1502 square feet. The insulated portion has R-16 insulation, but 3% of the total area has gaps (R- 3.3) in the insulation and 15% of the total are low spots in the insulation (R-9). What is the average R-value? Answer:

Construction Materials, Methods and Techniques (MindTap Course List)

4th Edition

ISBN:9781305086272

Author:William P. Spence, Eva Kultermann

Publisher:William P. Spence, Eva Kultermann

Chapter24: Thermal Insulation And Vapor Barriers

Section: Chapter Questions

Problem 5RQ

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A wall has a total of 1502 square feet. The insulated portion has R-16 insulation, but 3% of the total area has gaps (R-
3.3) in the insulation and 15% of the total are low spots in the insulation (R-9). What is the average R-value?
Answer:

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