The insulating value of cavity walls is __________ greater than the solid walls.(a) 10%(b) 15%(c) 20%(d) 25%I had been asked this question in a national level competition.I'm obligated to ask this question of Cavity Walls topic in section Cavity Walls & Partition Walls of Construction & Building Materials

The insulating value of cavity walls is __________ greater than the so

1.	The insulating value of cavity walls is __________ greater than the solid walls.(a) 10%(b) 15%(c) 20%(d) 25%I had been asked this question in a national level competition.I'm obligated to ask this question of Cavity Walls topic in section Cavity Walls & Partition Walls of Construction & Building Materials
Answer» RIGHT choice is (d) 25% Best EXPLANATION: A huge amount of air is PRESENT inside the cavity of a cavity WALL which is a poor conductor of heat. Hence cavity walls provide great thermal insulation to the buildings. The INSULATING value of a cavity wall is 25% greater than a solid wall.

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