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Q: The thickness of steel in main members not directly exposed to weather shall not be less than
  • A. 8 mm
  • B. 5 mm
  • C. 6 mm
  • D. 10 mm
Correct Answer: Option C - As per IS code 800:1984 • 3.8.2 Steel work directly & Exposed to Weather- Where the steel is directly exposed to weather and is fully accessible for cleaning and repainting, the thickness shall be not less than 6 mm and where the steel is directly exposed to weather and is not accessible for cleaning and repainting, the thickness shall be not less than 8 mm. These provisions do not apply to the webs of Indian Standard rolled steel joists and channels or to packings.
C. As per IS code 800:1984 • 3.8.2 Steel work directly & Exposed to Weather- Where the steel is directly exposed to weather and is fully accessible for cleaning and repainting, the thickness shall be not less than 6 mm and where the steel is directly exposed to weather and is not accessible for cleaning and repainting, the thickness shall be not less than 8 mm. These provisions do not apply to the webs of Indian Standard rolled steel joists and channels or to packings.

Explanations:

As per IS code 800:1984 • 3.8.2 Steel work directly & Exposed to Weather- Where the steel is directly exposed to weather and is fully accessible for cleaning and repainting, the thickness shall be not less than 6 mm and where the steel is directly exposed to weather and is not accessible for cleaning and repainting, the thickness shall be not less than 8 mm. These provisions do not apply to the webs of Indian Standard rolled steel joists and channels or to packings.