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Q: Identify the correct statement with respect to different components of a building.
  • A. Lintel beams are built between sub structure and super structure of a building, so that load is distributed uniformly.
  • B. Partition walls should be designed to carry the roof loads.
  • C. Thermal insulation efficiency of cavity walls is better than of solid wall for the given thickness.
  • D. Stretcher bond is considered to be stronger than English bond for the given thickness.
Correct Answer: Option C - Cavity wall– Cavity walls are constructed for heat insulation sound insulation and damp prevention, it is economical as the cost of such a wall is only 80% of the solid wall of the same thickness. • To prevent dampness in the cavity walls a horizontal DPC layer is provided in these walls about 15 cm below the ground level and cavity is taken down only 10 cm below the DPC below this level.
C. Cavity wall– Cavity walls are constructed for heat insulation sound insulation and damp prevention, it is economical as the cost of such a wall is only 80% of the solid wall of the same thickness. • To prevent dampness in the cavity walls a horizontal DPC layer is provided in these walls about 15 cm below the ground level and cavity is taken down only 10 cm below the DPC below this level.

Explanations:

Cavity wall– Cavity walls are constructed for heat insulation sound insulation and damp prevention, it is economical as the cost of such a wall is only 80% of the solid wall of the same thickness. • To prevent dampness in the cavity walls a horizontal DPC layer is provided in these walls about 15 cm below the ground level and cavity is taken down only 10 cm below the DPC below this level.