Türsturz
Türsturz is a German architectural term for the horizontal structural element placed above a doorway to carry and distribute loads from the wall or floors above. In English it corresponds to the lintel or door header. Türstürze are both functional and, frequently, decorative, serving to maintain an opening’s integrity while permitting passage.
Historically Türstürze were made of stone or timber in ancient and traditional buildings; their form and material
From an engineering perspective a Türsturz must be sized to resist bending and shear from imposed loads,