Nineteenth Century Geometry
We have seen two examples of 19th Century geometry in the Nave parapet and Lady chapel gable, both involving simple ratios, i.e. avoiding irrational numbers such as √2, √3 and φ, the golden section. This impression of simplicity is confirmed by the geometry of the Pritchard tower and spire (Figure 20). All measurements appear to be derived from existing measures. T stands for the width of the Pritchard tower. Comparison may be made with Pearson’s geometry at Truro. The nave bays fit into columns of five equal squares. “…Each bay of the arcade is twice as high as long, the springing of the arches being halfway up, and takes two squares; the same goes for the clerestory; while the tribune bays … take a single square each.” 37
Pevsner continues: “The proportions of the transverse section of the nave and the details of the w wall make extensive use of the Golden Section. Here is Pearson’s typical fusion of classical proportion into the Gothic style.” The golden section is also used in Wells, Llandaff, Salisbury, 38 Chartres, 39 in the equivalent of the triforium in both the nave and choir at York and in the arcade of St Hugh’s choir at Lincoln.
Pevsner continues: “The proportions of the transverse section of the nave and the details of the w wall make extensive use of the Golden Section. Here is Pearson’s typical fusion of classical proportion into the Gothic style.” The golden section is also used in Wells, Llandaff, Salisbury, 38 Chartres, 39 in the equivalent of the triforium in both the nave and choir at York and in the arcade of St Hugh’s choir at Lincoln.