No. 44. Romanesque plan of Cathedral, Worms.
The upper walls of the nave were carried on arches supported by columns, which constituted the division of the side aisles; these latter being formed by vaultings from the nave columns to the outer walls, the vaulting being roofed over.
The upper part of the nave was pierced by windows, small and comparatively narrow, with semi-circular heads forming the Clerestory. Similar windows in some instances occur in the aisles, the jambs of these windows being bevelled both inside and out for the freer admission of light.
The nave was roofed in with timber, but as the result of frequent destruction by fire, the roof was eventually vaulted; in early examples by the barrel or tunnel vault, but later this developed into cross-vaulting, which was also introduced into the side aisles.
No. 45. Romanesque, bay of interior, Worms Cathedral.
No. 47. Romanesque Church interior with Triforium.