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Identify the type of roof from the image shown below:

Identify the type of roof from the image shown below: Correct Answer Couple Close roof

Explanation:

Couple Roof:

  • couple Roof is the simplest form of the pitched roof.
  • In this roof construction, the common rafters slope upwards from the opposite walls and they meet on a ridge piece in the middle. This form of pitched roof is a pair of rafters acting like two arms pinned at the top and hence it is called couple roof.

 

Two rafters are connected by a wooden member which acts as a tie.

Tie prevents the outward spreading of the roof

It can also act as support for the ceiling.

It can be economically used for spans up to 4.2m.

Additional Information Single roof:

  • Single Roof is defined as a roof having only a single slope on each side of a central ridge, whereas, in a shed roof, it has a single slope, but without a central ridge.
  • The single roof is a type of sloping roof. In this type of roof, common rafters are provided on each side without any intermediate support. Single roof construction is simple than other roofs.

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Collar beam roof:

  • Collar tie roof is similar to the couple close roof. A collar tie is a horizontal member between two rafters and is very common in domestic roof construction. Often collar ties are structural members but they may be used simply to frame a ceiling.
  • In collar tie roof, the horizontal tie is raised up from the feet of the rafters to the almost middle of the rafters. This raised-up horizontal tie is known as the collar tie. Collar ties should not be fixed more than one-third or one-half of the rise of the roof up from the wall plate.

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