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Langley, Batty, 1696-1751 / The city and country builder's and workman's treasury of designs, or, The art of drawing and working the ornamental parts of architecture
(1756)

Chap. 2. Of the intercolumnation or proper distance that the columns of every order are to be placed at, in the forming of designs for frontispieces, doors, windows, etc. ,   pp. 17-18


Page 17

              Of INTERCOLTJMNATIONS.
                      CHAP. IL
bI~ the Intercolumnation or proper Diftance that the Columns of eVciy
  Order are. to be placed at, in the forming of Defigns for Frontifpieces,
  Doors, Windows, &c.
   No~te, That herein I account the Diftance or Intercolumnation, from the
central Line of ote
     Column, to the' central Line of the other; and not from the Outfide
of the one, to the
     Outfide of the other, as many Perfons have done.
I.           H E Diftance of ~'ufcan Columns
             in Pairs is i Diameter 45 Minutes;
             but when fingle, in Frontifpieces,
             4 Diameters; and in Arcades, they
             may extend from ~ to 7 Diameters,
             where Neceffity requires it, making
the Arch a Semi-Ellipfis, inflead of a Semicircle;
but ,6 Diameters is the ufual and proper Diftance
for an Arcade.
  II. The Diftance of Columns in the Dorick
Order, is regulated by the Number of Triglyphs
that is to be between them.   For as the Breadth
of a Triglyph is 30 Minutes, and the Breadth
of a Metope, or Diftance between two Triglyphs
is 4~ Minutes, and as a Triglyph is always placed
over the central Line of every Column; there-
fore it follows, that to have  Triglyph between
thofe,' over two Columns, the Diftance mull be
2 Diameters, 30 Minutes; that is, 6o Minutes,
or 'i Diameter, for the two half Triglyphs over
each Column, and the whole Triglyph between
them; and 90 Minutes, or i Diameter and ~tn
half, for twice 45 Minutes, the Breadths of the
two Metopes.  So in like Manner to have two
Triglyphs between, the Diftance muff be 3 Dia-
meters, 45 Minutes; to have three Trigiyphs,
5 Diameters, which Vitruvius calls Arxoffyle; and
to have four Triglyphs, 6 Diameters, i~ Minutes,
vvhich laft is ufed in Colonades, and Arcades'; and
~I~t of 5 Diameters 'for Doors, &c.
  III. The Diftance of Columns in the 'lowick
Order is regulated by the Number of Modiltions,
which are placed over Columns, the fame as the
Triglyphs in the Dorick Order.  And as the Di-
fiance of the central' Lines of Innick Modillions,
in a Cornice over Columns, has been ihewn to
be 30 Minutes or half a Diameter, therefore the
Diftance between Columns in this Order to have
two Modillions between, which is 'the leaft that
can be; to have the Columns clear of each other,
mull be i Diameter and an half; to have three
Modillions between, 2 Diameters and an half3 to
have five Modillions between, 3 Diameters; which
laft being doubled, is ufed in Arcades; and that~of
2 Diameters and an half doubled, for Doors; &c
  The Diftance of lonick Pilafters not diminjihed,
muff be greater than of Columns, becaufe the
central Lines of their Modillions are at 35 Minutes
Diftance; and therefore it follows, that to have
two Modillions between, the Diftance muft be i
Diameter, 45 Minutes; to have three Modillions
between, 2 Diameters, and zo Minutes; to have
four Modillions between, z Diameters, ~ Minutes;
and to have five Modillions between, 3 Diameters,
30 Minutes,' &c.
  IV. The Diftance of Columns in the Corinthian
Order, is alfo regulated by the Number of Mo-
dillions between them; and as in Problem XV.
of the Corinthian Order, the Diftance 'of their
central Lines are 35 MInutes, which is the i~itie
      D                               Diftance,


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