Select the INCORRECT statement related to the type and time seasoning of timbers. 

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PGCIL DT Civil 5 May 2023 Official Paper
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  1. A 38 mm thick highly refractory timber requires 17 days for seasoning. 
  2. A 25 mm thick non - refractory timber takes 8 days for seasoning.
  3. A 12 mm thick moderately refractory timber requires 10 days for seasoning. 
  4. A 50 mm thick highly refractory timber takes 22 days for seasoning.

Answer (Detailed Solution Below)

Option 3 : A 12 mm thick moderately refractory timber requires 10 days for seasoning. 
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Detailed Solution

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Explanation:

The cost of seasoning of timber will naturally depend on the thickness of the timber and the type of timber with respect to seasoning. It will be more for highly refractory timbers and less for non-refractory timbers. The period or time for seasoning of timber will also vary with the thickness of timber and type of timber with respect to seasoning.

Time for Seasoning of Timbers:

Type of timber Thickness in mm
12 25 38 50
Non-refractory 6 days days 12 days 17 days
Moderately refractory 7 days 10 days 14 days 18 days
Highly refractory 9 days 12 days 17 days 22 days

A 12 mm thick moderately refractory timber requires 7 days for seasoning. Hence option (3) statement is incorrect.

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