Glossary · A
Ad quadratum
Design by the square: proportions derived from a square and the squares inscribed in it by joining mid-points, giving the ratio 1 : √2.
See also: Ad triangulum
Rules that use the word
Ad quadratum: a section as high as it is wide. Proportion the cross-section of a church from the square: let the total height to the crown of the nave vault equal the total width, and take the heights of the aisles and the springing of the vaults at whole divisions of that square.
Where it appears in the book
In the chapters Proportion and Number, Romanesque and Gothic.
Nearby in the glossary
Ablaq · Abutment · Acanthus · Acroterion · Ad triangulum · Adhishthana · Aedicule · Agora