-Roof Truss :all members of the framework structure held in position together by a system of  assembly
-Tie Beam : Horizontal member of framework which relieves the effort supported by the principal roof rafters.
-Principal Rafter : Principal roof rafters which follow the roof slope on which the purlins are fixed.
-Purlin :The ridge purlin indicates the peak beam, and the intermediary purlins are fixed to the rafters sloping down on each side of the roof.
-Top plate beam : Beam placed on the top of a stone or brick wall.  The top plate beam serves as a support for the rafters.
-Rafters : Beams of wood fixed at regular intervals which join the ridge purlin, the intermediary purlins and the top plate beam.
-Batten : Floor boards(battens sub-flooring) which are nailed to the rafters.
-Hip of roof : Triangular roof purlin