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Q: A good building stone should have which of the following qualities? i. Uniform texture ii. Strength iii. Fire resistance iv. Hardness
  • A. Only (i)
  • B. Only (i) and (ii)
  • C. (i), (ii), (iii), (iv)
  • D. Only (i), (ii) and (iii)
Correct Answer: Option C - Properties of a good building stone– • Crushing strength should be greater than 100 N/mm² • Decent in appearance • A good building stone should be durable. • Its fracture should be sharp, even, bright, and clear with grains will cemented together. • Hardness should be greater than 17. • Resistance to fire • Specific gravity should be greater than 2.7 • Uniform texture • Toughness index is high • Water Absorption is low (< 5%) • Weathering resistance
C. Properties of a good building stone– • Crushing strength should be greater than 100 N/mm² • Decent in appearance • A good building stone should be durable. • Its fracture should be sharp, even, bright, and clear with grains will cemented together. • Hardness should be greater than 17. • Resistance to fire • Specific gravity should be greater than 2.7 • Uniform texture • Toughness index is high • Water Absorption is low (< 5%) • Weathering resistance

Explanations:

Properties of a good building stone– • Crushing strength should be greater than 100 N/mm² • Decent in appearance • A good building stone should be durable. • Its fracture should be sharp, even, bright, and clear with grains will cemented together. • Hardness should be greater than 17. • Resistance to fire • Specific gravity should be greater than 2.7 • Uniform texture • Toughness index is high • Water Absorption is low (< 5%) • Weathering resistance