Great Colonnade at Apamea columns display two main designs: a plain one, and the distinctive spiral-flutes. Archaeologist Jean Lassus argues that the former dates back to the Trajanic period, while the latter to that of Antoninus Pius. The colonnade's porticoes were paved with extensive mosaics along the full stretch of the colonnade. Under the Byzantine Emperor, Justinian I, several parts of the colonnade were restored. The street was narrowed to by adding a sidewalk on either side. Several stretches of the street had their Roman pavement replaced with a new pavement made of squared blocks of limestone. The new pavement also covered a completely
Architectural ironmongery diploma course and a Registered Architectural Ironmonger (RegAI) scheme. Architectural ironmongery Architectural Ironmongery or (Architectural Hardware) is a term used for the manufacture and wholesale distributor of items made from iron, steel, brass, aluminium or other metals, including plastics, for use in all types of buildings. The Architectural Ironmongery range includes door handles, closers, locks, cylinder pulls and hinges ("door furniture"), window fittings, cupboard fittings, iron railings, handrails, balustrades, switches and sockets. The term is sometimes used to distinguish between these items and retail of consumer goods sold in ironmongers' shops or hardware stores. Use of ironware in buildings has