Arch



•	Arch has been adapted by different cultures in many many times •	The romans were the first to use it in monumental achitercure •	First origins found in mesopotamia •	Known in ancient egipt •	Introduced in the roman empire •	Perfectioned by the etruscans •	The arch developed from the post and lintel or possibly the corbel •	In some ocations, arch was used to represent a victory and an entry at the same time •	An example of architecture in which arch was used is the colliseum,

Advantages •	Traditional masonry arches are generally durable. •	An arch bridge is an economical way to traverse small distances and is able to cope with bending forces. The entire arch is in compression. The compression is transferred into the abutments, and ultimately resisted by tension in the ground under the arch. The absence of tension in the arch means that it can sustain much greater spans than beams can achieve, and it can use materials that are not strong in tension Disadvantages •	This form creates problems of equilibrium that do not exist in lintels •	Relative to modern alternatives, such arch bridges are very heavy, requiring extensive foundations. They are also expensive to build wherever labor costs are high.

Arch types Roman Segmental Lancet Flat Morrish Tudor

Blind Arch - A blind arch is an arch infilled with solid construction so it cannot function as a window or door. Natural Arch - Natural rock formations may also be referred to as arches. These natural arches are formed by erosion rather than being carved or constructed by man. Triumphal Arch - A special form of the arch is the triumphal arch, usually built to celebrate a victory in war.