As per IS303 and 10701, what is recommended thickness (mm) of '3 ply' plywood board for structural purpose? 

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HPCL Engineer Civil 23 Dec 2023 Official Paper
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  1. 16 mm
  2. 4 mm
  3. 9 mm
  4. 8 mm

Answer (Detailed Solution Below)

Option 2 : 4 mm
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Concept:

As per IS 303: 1989 Clause 8.2 and Table 3;

SI No. Board Thickness mm
1. 3 ply 3, 4, 5, 6
2. 5 ply 5, 6, 8, 9
3. 7 ply 9, 12, 15, 16
4. 9 ply 12, 15, 16, 19
5. 11 ply 19, 22, 25
6. above 11 ply As ordered

 

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