Classic variation of the
#IonicEntablature. Left side shows the macro-level plan. Right side shows the detailed plan for the
#moldings.
All moldings should be familiar from the
#IonicPedestal, except the
#fascia — flat bands, of which there are 3, at the bottom of the
#Architrave. The fascias grow progressively taller, starting at 36 units at the bottom, to 48 in the middle, and 60 at the top, with each successive one offset horizontally by 6 units from the previous one.
Above the fascia, we have a
#cymaReversa which is 24 units tall and 20 units wide. Here we are using half turn of a helix with a vertical axis. Either helix or elliptical arcs are acceptable, but the choice must be consistent across the entire order. You cannot use ellipses in the pedestal and helices in the entablature, for example.
If you do use a helix, remember that it is a 3D shape like a round coil. To use it as a
#profileCurve, it must be flattened to a 2D shape by
#projecting it to the
#constructionPlane. I will describe this technique in detail later.
The
#frieze is a flat surface with no moldings. It is meant as a blank space on which to put custom decorative 3D
#ReliefCarvings or sculptures.
There are no new moldings in the
#cornice. Note that the order of
#cymaRecta and cyma reversa are reversed from that of the
#pedestal, with cyma recta at the top and cyma reversa at the bottom. The only difference between the two is that the recta has a horizontal axis and reversa has a vertical axis. Rotating either one 90° yields the other.
So, the bottom of the cornice starts with a cyma reversa 32 units tall and 34 wide. This is followed by a fascia 56 units tall on which the
#dentils will appear later on. The 36 unit horizontal offset for the 4-unit thick fillet above it is to leave room for the dentils.
This is followed by a
#reed (8 units),
#ovolo (32 units),
#corona (48 units), cyma reversa (16 x 12 units), fillet (4 units), cyma recta (40 x 44 units), and fillet 12 units