The correct answer is: B. Covering sloping roofs.
Bituminous felts are a type of roofing material that is made from a mixture of bitumen, a type of asphalt, and other materials, such as cellulose fibers or glass fibers. They are used to cover sloping roofs, and they can also be used to create a waterproof barrier between the roof and the interior of the building.
Bituminous felts are a relatively inexpensive roofing material, and they are easy to install. They are also durable and long-lasting, and they can withstand a variety of weather conditions.
However, bituminous felts are not as energy-efficient as some other types of roofing materials, and they can be susceptible to damage from sunlight and extreme temperatures.
Here is a brief explanation of each option:
- Option A: Covering A.C. sheets. Bituminous felts are not typically used to cover A.C. sheets. A.C. sheets are a type of roofing material that is made from aluminum or steel, and they are typically covered with a layer of insulation. Bituminous felts are not a good insulator, and they would not provide the same level of protection as other materials that are used to cover A.C. sheets.
- Option B: Covering sloping roofs. Bituminous felts are commonly used to cover sloping roofs. They are a relatively inexpensive roofing material, and they are easy to install. They are also durable and long-lasting, and they can withstand a variety of weather conditions.
- Option C: D.P.C. D.P.C. stands for “damp-proof course.” It is a type of waterproofing material that is used to prevent moisture from entering a building. Bituminous felts are not typically used as D.P.C. materials. There are other materials that are better suited for this purpose, such as bitumen-based membranes or sheet membranes.
- Option D: None to these. Bituminous felts are used for a variety of purposes, including covering sloping roofs. They are not typically used for the other purposes listed in the options.