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Q: The thickness of external plaster on brick (boundary) wall is
  • A. 20 mm
  • B. 12 mm
  • C. 10 mm
  • D. 8 m
Correct Answer: Option A - Plastering– It gives smooth surface water proofing, heat proofing, low cost smooth surface of interior wall and exterior wall. (i) Internal plastering– Thickness provided for internal plastering is 10 mm to 15 mm and mixed ratio is 1 : 6. (ii) External plastering– Its thickness = 15–20 mm (iii) Ceiling plaster– Thickness = 6 mm, mix ratio = 1 : 4
A. Plastering– It gives smooth surface water proofing, heat proofing, low cost smooth surface of interior wall and exterior wall. (i) Internal plastering– Thickness provided for internal plastering is 10 mm to 15 mm and mixed ratio is 1 : 6. (ii) External plastering– Its thickness = 15–20 mm (iii) Ceiling plaster– Thickness = 6 mm, mix ratio = 1 : 4

Explanations:

Plastering– It gives smooth surface water proofing, heat proofing, low cost smooth surface of interior wall and exterior wall. (i) Internal plastering– Thickness provided for internal plastering is 10 mm to 15 mm and mixed ratio is 1 : 6. (ii) External plastering– Its thickness = 15–20 mm (iii) Ceiling plaster– Thickness = 6 mm, mix ratio = 1 : 4