Arch

// An arch is a structure located between two intermediate supports; it can resist more compression force than the lintel and allows the use of bigger spans. ////It is believed to have been invented by the Mesopotamian civilization and later, developed in its whole potential by the Romans. // //In the arch all the forces are resolved into compressive stresses. And it eliminates tensile stresses by spanning an open space. // //An arch is formed by several parts, these are: the key stone, the impost or Springer, the intrados or soffit, the rise or radio, the span or horizontal distance and the abutment. // // **// Natural Arch //**//: it is natural rock formation. //
 * //[[image:thearch.jpg width="599" height="446" align="left"]]The Arch //**
 * Different Types of Arches**  //
 * //Blind Arch: //**// it is used for decorative purposes. //
 * //Half point Arch: //**// it is a semicircle arch. //
 * //Pointed Arch: //**//it is also known as the ovigal arch. //
 * //Horseshoe: //**//it is very commonly used in the Islamic buildings for decorative purposes. //
 * //<span style="color: black; mso-ascii-font-family: Calibri; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: Calibri; mso-bidi-font-family: Arial; mso-fareast-language: EN-CA;">Flying buttress Arch: //**//<span style="color: black; mso-ascii-font-family: Calibri; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: Calibri; mso-bidi-font-family: Arial; mso-fareast-language: EN-CA;"> it releases the pressure of the vault. //
 * //<span style="color: black; mso-ascii-font-family: Calibri; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: Calibri; mso-bidi-font-family: Arial; mso-fareast-language: EN-CA;">Vault: //**//<span style="color: black; mso-ascii-font-family: Calibri; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: Calibri; mso-bidi-font-family: Arial; mso-fareast-language: EN-CA;"> it is an arch extended horizontally. //
 * //<span style="color: black; mso-ascii-font-family: Calibri; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: Calibri; mso-bidi-font-family: Arial; mso-fareast-language: EN-CA;">Dome: //**//<span style="color: black; mso-ascii-font-family: Calibri; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: Calibri; mso-bidi-font-family: Arial; mso-fareast-language: EN-CA;"> arch rotated 360°. //

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