‹‹‹ Vitr. 4.6.4 | Table of Contents | Vitr. 4.6.6 ›››
5The arrangement of the rails is to be such, that when the height is divided into five parts, two are given to the upper and three to the lower rail. In the centre the middle rails (medii impages) are placed; the others are disposed above and below. The width of the rail is to be one-third of the pannel, and its cymatium a sixth part of the rail itself. The width of the inner styles is one half of the rail, and the raising (replum) four sixths of the rail. The styles nearest the dressings are made one half of the rail. If the doors are folding, the height remains the same, but the width is to be increased. If in four folds, the height is to be increased.
5The rails will be apportioned thus: divide the height into five parts, of which assign two to the upper portion and three to the lower; above the centre place the middle rails; insert the others at the top and at the bottom. Let the height of a rail be one third of the breadth of a panel, and its cymatium one sixth of the rail. The width of the meeting-stiles should be one half the rail, and the cover-joint two thirds of the rail. The stiles toward the side of the jambs should be one half the rail. If the doors have folds in them, the height will remain as before, but the width should be double that of a single door; if the door is to have four folds, its height should be increased.