Printed from: https://conservationhandbooks.com/dry-stone-walling/dry-stone-features/arches/
An arch is any curved structure which spans an opening. The most common dry stone forms are semicircular (Norman) arches, with pointed (Gothic), and flattened (elliptical) arches also found. Other more ornate forms require ornamental mouldings or tracery, and are normally only found in buildings. In the construction of arches, extra attention must be given...