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Question
Whenever the whitewashing or distempering is done on corrugated iron sheets, in the estimation the plan area of the sheets is increased by
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A.
2%
B.
7%
C.
10%
D.
14%
Answer ( Option D)

14%

Solution

Corrugated sheet surfaces and Nainital pattern roof surfaces shall be included with plain surfaces after increasing their areas by the following percentages: 
(a) Corrugated steel sheets - 14 percent 
(b) Nainital pattern roof (Plain sheets with rolls) - 10 percent 
(c) Nainital pattern roof with corrugated sheets - 25 percent 
(d) Asbestos cement sheets, corrugated - 20 percent 
(e) Asbestos cement sheets, semi-corrugated - 10 percent

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