Post+and+Lintel

Post and lintel is a very simple construction technique used almost since the begining of the mankind, that consist in a horizontal member (known as the lintel) supported by two vertical posts or columns at either end. This technique because of its basic position has 2 forces acting upon the post and lintel system: Weight carrying compression at the joint between lintel and post, and tension.

The lintel or header is a horizontal beam used in the construction of buildings. It usually supports the masonry above the window or door opening. Can be made of wood, stone, steel or reinforce concrete.

Trabeated system was used specially in Greece and Egipt time (3000 b.C) and it refers to the use of horizontal beams or lintels which are borne up by many columns or posts. Now a day whe can see this system on ancient Greece temples that are still standing.

In conclusion we can say that this is the oldest construction system used for doors and windows and as basic as it sounds (like putting a horizontal stone on top of 2 vertical ones) it's still been used in modern structures, of course with a very considerable technology upgrade.