The width of the die is the same as the plinth of the base of the column above it, that is, one and one-third diameter. The projection of the capping, which is the same for all three orders is obtained by drawing a line at an angle of 30 degrees with the vertical from the top of the die. The width of the plinth corresponds to the projection of the capping, and is determined by dropping perpendiculars from the top fillet. The height of the mouldings between the die and plinth is determined by a line drawn from the bottom of the die at an angle of 45 degrees to intersect the vertical face of the plinth. The angle is the same for all the orders. _Doric Pedestal_ In the Doric order the height of the capping is one-third diameter. The face of the die is square, and this determines the height of the plinth. [Illustration: No. 169. Detail of Pedestals.] The capping mouldings consist of a fillet, facia, ovolo, fillet and cavetto. The facia is carried to the underside of the fillet in a curve, and its height is half the total height of the capping. The facia is supported by the ovolo, and a fillet and cavetto complete the capping. The height of the course of mouldings at the top of the plinth should be divided into three, then the upper third will contain a cavetto moulding and fillet, and the remaining two-thirds an ogee and final fillet. _Ionic Pedestal_ In the Ionic pedestal the plinth with its mouldings should occupy one-third the height and the capping one-fifth the remainder. The mouldings are similar to those of the Doric pedestal, but a little more elaborate. In the capping a reversa is used under the top fillet and a small torus or bead is placed between the ovolo and the cavetto. In the mouldings of the plinth a similar bead is introduced above the ogee moulding. _Corinthian Pedestal_ The same general divisions as the Ionic will give the proportions of the Corinthian pedestal, the difference being that of the scale and the detail of the mouldings. The capping may be divided into two. The top half consists of a fillet, reversa and facia, and the lower half a supporting cyma recta, a bead and a cavetto curve. The plinth mouldings are the same as those of the Ionic pedestal with the addition of a torus beneath the ogee. The height of this torus is one-fourth the total height and is about equal to that of the cavetto and bead together. When the pedestal is employed the arch becomes proportionately larger. In the Doric order the columns are then spaced seven and a half diameters apart; in the Ionic seven and three quarters, and in the Corinthian eight diameters centre to centre. The archivolt, the radius of which is determined by the above spacing, is supported as before by an impost and pilaster. The base of the pilaster consists of a slightly projecting block equal in height to the plinth block of the pedestal.