DOI Page / Citation link:
https://doi.org/10.11588/diglit.62828#0232
How to draw the Scotia Moulding..
Fig. c is the fcotia, whofe height, without its fillets, muff
be divided into feven. On the fourth divifion draw a line r d
parallel with the fillets. Take the upper three parts in the
compafies and draw a circle. Make da equal dny or four parts*
From a, draw a rp indefinitely, cutting the aforefaid circle at pi
Laftly, fix the compafs foot at a, and extending the other to
/>, fweep the arch p n, and the fcotia will be completed.
The cyma-redfa A is drawn from the fummits of equila-
teral triangles thus: draw vw, and bifedt it at x. Extend the
compafies x to and turn two arches at 3, and their interfec-
tion is the center for the convex part. In the fame manner j *
is the center for the concave part, which completes the
moulding...
How the cyma-inverfa B is drawn, muft be evident by in-
fpedtion; and with refpedt to any other kind of moulding, they
are either confidered as quadrants, or as femicircles, or nearly
fo; as the aftragals, torus, ovolo, conge, and cavetto.
Qbjervations..
Fig. c is the fcotia, whofe height, without its fillets, muff
be divided into feven. On the fourth divifion draw a line r d
parallel with the fillets. Take the upper three parts in the
compafies and draw a circle. Make da equal dny or four parts*
From a, draw a rp indefinitely, cutting the aforefaid circle at pi
Laftly, fix the compafs foot at a, and extending the other to
/>, fweep the arch p n, and the fcotia will be completed.
The cyma-redfa A is drawn from the fummits of equila-
teral triangles thus: draw vw, and bifedt it at x. Extend the
compafies x to and turn two arches at 3, and their interfec-
tion is the center for the convex part. In the fame manner j *
is the center for the concave part, which completes the
moulding...
How the cyma-inverfa B is drawn, muft be evident by in-
fpedtion; and with refpedt to any other kind of moulding, they
are either confidered as quadrants, or as femicircles, or nearly
fo; as the aftragals, torus, ovolo, conge, and cavetto.
Qbjervations..