The Construction of Gothic Cathedrals: A Study of Medieval Vault Erection

abutment angle architect Architecture assemblage banded barrel vault beams blocks building built camber Cathedral centering frames cerce clerestory piers clerestory wall construction corbel cradles cross vaults crown curve decentering device diagonal ribs domed groin vault drawings erection example extrados falsework structures flying buttresses formwork Gothic Architecture Gothic churches Gothic vaults half-arch half-frames high vaults horizontal illustrated inches intersecting joints lagging units lateral load longitudinal lower masonry masons medieval builders medieval vaulting mortar nave vaults pair photographic planks plate platform poles Pont du Gard portion practice problems putlog holes quadripartite vaulting Reims rib centerings ribbed vault Romanesque roof scaffolding scheme semicircular sexpartite vaults shape side aisles soffit span spring square bay stone courses struts tas-de-charge temporary thick thrust tie-beams timber timber-work tion towers transverse arches transverse ribs triforium upper vault compartments vault surfaces vertical Vide Viollet-le-Duc voussoirs wedges weight window wooden