A roof basically consists of structural elements provided at the top of building for the support of roof coverings.The uppermost part of a building which is constructed in the form of framework to give protection to the building against rain, heat, snow, wind, etc.

Design of single span roof beams in roofs in houses, office buidlings, schools and other structures.

If the span of roof is less than 5m the following types of single roofs are used.