Airch

Frae Wikipedia
Lowp tae: navigation, rake
A masonry airch
1. cunyie 2. Voussoir 3. Extrados 4. dowpstane 5. Intrados 6. Rise 7. Clear span 8. Abutment

An airch is a structur that spans a space an supports structur an wecht abuin it. Airches appeared as early as the 2nt millennium BC in Mesopotamie brick airchitectur [1] an thair seestematic uise stairtit wi the Auncient Romans that wis the first tae applee the technique tae a wide reenge o structurs.

References[eedit | eedit soorce]

  1. "Ancient Mesopotamia:Architecture". The Oriental Institute of the University of Chicago. Retrieved 16 May 2012.