Post+and+Lintel


 * Post and lintel is a structural sistem based on vertical elements (posts) supporting horizontal elements (lintels). Posts are under compression while lintels are under conpression at the top and under tension at the bottom. This sistem can be traced to the Ancient times with the megalithic constructions (Stonehenge for example). Egiptians and greeks developed this sistem to cover big areas with a flat roof. Since then the sistem has carried on developing. Nowadays this sistem is still used and we can find it almost everywhere. A timber frame is a contemporary example of the use of post and beam. The disadvantages are that it can not bear big loads and the small distance between posts.**