Coffered Slab
Transcript of Coffered Slab
COFFER CEILINGSA coffer (or coffering) in architecture, is a sunken panel in the shape of a square, rectangle, or octagon in a ceiling, soffit or vault. A series of these sunken panels were used as decoration for a ceiling or a vault, also called caissons ('boxes"), or lacunaria ("spaces, openings"), so that a coffered ceiling can be called a lacunar ceiling: the strength of the structure is in the framework of the coffers.some example of ancient time are given below-
Gilded coffering on a barrel vault Giuliano da Sangallo's flat caisson ceiling,
of the apsis in Nazaré, Portugal Basilica di Santa Maria Maggiore, Rome
Late 16th century coffered ceiling Coffering on the Arch of Septimius Severus, Rome
of Santa Maria in Aracoeli, Rome
Coffered ceiling with 39 painted 15th-century flat coffered ceiling, Duomo of Pisa
panels in Palazzo Vecchio, Florence,
Italy
Inside Pisa's Duomo Painted coffering in octagons
and squares at Fontainebleau
Neoclassical coffered dome of Council chamber ceiling, Halifax Town Hall, 1863
James Wyatt's Pantheon, London
Commerce Court, Toronto Coffered and glazed dome,
Halifax Town Hall, 1863
Waffle slab is a reinforced-concrete floor and roof construction employing a square grid of deep ribs with coffers in the interstices.
LOAD ANALYSIS IN A COFFERED CEILING