A composite wall is to be constructed of 1/4 in. of stainless steel (k 10 Btu/h ft F), 3 in. of corkboard (k 0:025 Btu/h ft F), and 1/ 2 in. of plastic (k 1:5 Btu/h ft F): Determine the thermal...

A composite wall is to be constructed of 1/4 in. of stainless steel (k

10 Btu/h ft
F), 3 in. of corkboard (k

0:025 Btu/h ft
F), and 1/ 2 in. of plastic (k
1:5 Btu/h ft
F): Determine the thermal resistance of this wall if it is bolted together by 1/ 2-in.-diameter bolts on 6-in. centers made of