An unplastered brickwork has a resistivity of 0.83 m degC/W. For a 230 mm thick

Question

An unplastered brickwork has a resistivity of 0.83 m degC/W. For a 230 mm thick brick wall, the inside and outside surface resistances are 0.123 and 0.1 m2 degC/W respectively. The R-value of the given wall section (in m2 degC/W) is

Options:

A . 0.41

B . 0.5

C . 0.67

D . 1.05

Answer: Option A

-NA-

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