Rhombic roof
A Rhombendach also helm roof called, is a roof form of four equally large, irregular diamonds ( rhombi ) and four triangle gables as a wall termination.
The rhombic roof sits on a building with a square floor plan. The four diamonds, which are offset by 45 ° compared to the four gables , abut with their upper tips and the eight sides adjoining each other and thus form the roof tip (usually closed with a roof ball, weathercock, roof cross or flagpole) and the four roof ridges (roof edges), which are the top of the roof to the four respective gable tips. The four lower diamond peaks lie on the four corners of the wall between two gables each over the corner ( eaves ), the eight lower diamond sides on the eight gable sides.
The shape was mainly used in the spire of sacred buildings. Rhombic roofs were made of a wooden beam construction covered with slate . Like tent roofs and conical roofs, rhombic roofs, unlike folding roofs, have no valleys ( interior angles ) between the abutting roof surfaces.
