Pennethorne, John; Robinson, John [Ill.]: The geometry and optics of ancient architecture: illustrated by examples from Thebes, Athens, and Rome (London [u.a.], 1878)

r;

art IV. Plate XII

The Entasis op the Columns

THE GREEK COLUMNS.

Yi£. 1 . The Parthenon

r3

V



LAi

. ess

-.171= a>

■ffSfJ?

X!i

5.021

^

.038 Entasis

■ OSS6 EwUiusts
-,\039

,m

00=.t71

lH

■ 05Z1 JSntasit

■ OZ7 Entasis

M

§

$
*

iiimisurctt
entasis =s. 033

£C= .0434





msasixr^oL ■
entasis =. 054-

6.301



*5

TVC4

1ST? 3.

r

x:=.oiot>

rrieixsuj-ext,
entasis = . 043

b.

N? 2.

\ I

C '\W1

B

AH = 2 ^ =J= ^- <^' — major ouxCs

ajcr

!2



JR-

The, given, tangent lina R.S.
Tha cfoorcb Hne writing th^)
ripper & lower cfaametens

H~P.

The, oailxnje, of the shaft

of Hie Columns.

10Part of tap tangent ttrue, R.Jl .

Z1^- The, arc of the, given

Tfyperiiolcu ffvm, AtcJP'

iJ.

Major Aacvs AB = 2 a • = 7.86

KM =.7.86 +.171
AM = <x>

PI = y -

5. 93
8 . 03 >
0.171
26.448

3. S3 x 2,6 . 448
y~. 171 x 8 . 03

88 . 702

IS = 7807.9
leg. f= — 2. 6464630

27? 1. 27? Z. 17? 3. 2VP4-. N?5.

Iron temge^io ch^lR.P. .027---------0630....... 0990.. .....135 ....171

Trorn tauter* to eurVe.(ac)... ..00_______0109...—0434 .....097......171

AnwrzntcfEntasis. ..... .027______0521- -.0558... ...038---------0

Measurements________________043.........0556.....039

Fio . 2 . The Propyl a? a

= . 18?, xm, X

1



. 4 ■ 026

-.A

R

04-1 ErUasis

144

.061 Entasis
100

057 Entasis

03 "Entasis

M

NFS

X _ . IC3

measured, entasis = ■ 044

N?4

%

m&CLSvcrecL cn.t-cLsvs == .CS2

m

\jv?2

oo= on

5 ■ 124

7i i easi /red entasis = ■ 03.5

KS> — 2 a, = 12. 70* = y-naffr aa:i

>i

C LV°J

R

_h',q,<iM±i<m. tc Hie Hyperbola referred, to the,
prinsijjal, diameter anxl-tartqent at/ >vertea> A.]

a =hjy +*>*-a

<<c *li M

Major Aa£s A.E . = 2a, = 12.7C4-

a — 6.352

BI= 12.704 +.183
AJVi = .
P M =-

= 12.887 V 7>*

J

. 183
22.37

log

= 92.554
8565. 5025
— 2 . 8365175

TV? I. TV? 2. .TV?3..

J-7-cm tocngenz to clwrdllT. .030______0685 .106.

Frorro tangent to cvwve (ayj . .00_______0113____045—

Arn^uit of JSntasis . ...030.....0572— ...061...

Measizrern^nte________________035---------062------044

2V?4.

TVV5

.144

.183

.103..—

. .183

.041_____66

soA rt ^A^/'txn/jp-n e/^l.

tf^TB/te/l' </i2A. Oia^ft^f df't. c^&nt&HtJSZT.