Find the overall U-factor and R-value for a 2 x 4 in. wall with R-13 fiberglass batts (approximately 20% of the wall is framing). The exterior wall is 5/8 in. hardboard (standard tempered) over ½ in. vegetable fiberboard with no air gap. The interior is % in. gypsum board.

Find the overall U-factor and R-value for a 2 x 4 in. wall with R-13 fiberglass batts (approximately 20% of the wall is framing). The exterior wall is 5/8 in. hardboard (standard tempered) over ½ in. vegetable fiberboard with no air gap. The interior is % in. gypsum board.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

Find the overall U-factor and R-value for a 2 x 4 in. wall with R-13 fiberglass batts (approximately 20%
of the wall is framing). The exterior wall is 5/8 in. hardboard (standard tempered) over ½ in. vegetable
fiberboard with no air gap. The interior is % in. gypsum board.

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