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Q: Which of the following DPC in walls is popular with more important works?
  • A. A layer of well burnt ordinary bricks soaked in both pitch or bitumen.
  • B. Two layers of non-porous stone slabs laid in 1:3 cement mortar to break joints.
  • C. One layer of non-porous stone about 2 inches thick laid for the full width of the wall over a bed of 1 : 3 cement mortar.
  • D. A reinforced concrete plinth beam of dense concrete with two coats of hot bitumen applied at the rate of 1.5 kg per square meter for each coal.
Correct Answer: Option D - DPC usually of 2.5 cm thick rich cement concrete is 1:1.5:3 or 2 cm thick rich cement mortar 1:2 mixed with standard water proofing material is provided at the plinth level to full width of plinth wall. • A reinforced concrete plinth beam of dense concrete with two coats of hot bitumen applied at the rate of 1.5 kg per square meter for each coat.
D. DPC usually of 2.5 cm thick rich cement concrete is 1:1.5:3 or 2 cm thick rich cement mortar 1:2 mixed with standard water proofing material is provided at the plinth level to full width of plinth wall. • A reinforced concrete plinth beam of dense concrete with two coats of hot bitumen applied at the rate of 1.5 kg per square meter for each coat.

Explanations:

DPC usually of 2.5 cm thick rich cement concrete is 1:1.5:3 or 2 cm thick rich cement mortar 1:2 mixed with standard water proofing material is provided at the plinth level to full width of plinth wall. • A reinforced concrete plinth beam of dense concrete with two coats of hot bitumen applied at the rate of 1.5 kg per square meter for each coat.