but what if the lights don’t turn back on?a thesis

Jesen TanadiRhode Island School of Design 2011

drawing set(not to be distributed without catalog / drawing keys)

Work-Out Bench

Twin Bridges for Forging Friendships

Guerilla Urban Parasol

A Roof for the South Street Power Plant as an Ice Skating Rink

Armature for Urban Fantasies

Armature for Urban Fantasies, Detail of Mechanisms

TUNN

EL T

O W

INDS

OR, C

ANAD

A

I-75

I-375

EAST D

ETROIT (

7 MI)

MT. CLEM

ENS, M

I (17 MI)

DEARBORN, MI (5 MI)YPSILANTI, MI (26 MI)

PENN CENTRALSTATION

HIGH

LAND

PAR

K, M

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FARMINGTON (20 M

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RAIL

ROAD

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TO W

INDS

OR, C

ANAD

A

But What if the Lights Don’t Turn Back On?

DETROIT, MI – 42° 19′ 53″ N, 83° 2′ 45″ W

CENTER POINT of EARTH

ZE

NIT

H: L

OCA

L &

VIR

TUA

L V

ERT

ICA

L LI

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OPP

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OF

THE

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AL

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T A

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CIFI

C LO

CATI

ON

ALTITUDE1ALTITUDE2

ALTITUDE1(AS MEASURED AGAINST NADIR) ALTITUDE2

(AS MEASURED AGAINST NADIR)

ASTRONOMICAL HORIZON LINE (ORTHOGRAPHIC)LATITUDE, LONGITUDE

PLANIMETRIC CL of QUADRANTCOINCIDENTAL WITH MERIDIAN LINE (LONGITUDE) AT GIVEN LOCATION

EARTH’S AXIS of ROTATION

(23.5° OBLIQUE TO LINE PERPENDICULAR TO ECLIPCITCAL ORBIT)

CELE

STIA

L EQ

UATO

R LI

NE

(PER

PEN

DIC

ULA

R TO

EA

RTH

’S A

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of R

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LINE of

SIGHT (C

ALIBRATED WIT

H AN A

LIDADE)

LINE of

SIGHT

AU

XIL

IARY

PRO

JECT

ION

of Q

UA

DRA

NT,

DIS

PLA

YIN

G T

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INST

RUM

EN

T’S

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UA

L A

LIG

NM

EN

T W

ITH

CE

LEST

IAL

OBJ

ECT

(OBSERVATION POINT)

PLANE OF THE ECLIPTIC (O

RBITAL PLANE)

NA

DIR

LO :( ريظن) CA

L & V

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L VE

RTICAL LIN

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N (PLU

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ANGLE b/w NADIR & LINE of SIGHT = ANGLE b/w ZENITH & CELESTIAL OBJECT

TRUE HORIZON LINE (EARTH’S CURVATURE)

LIN

E of

SIG

HT”

LIN

E of

SIG

HT”

LIN

E of

SIG

HT”

THE ASTRONOMICAL HORIZON LINE LIES WITHIN A VIRTUAL HORIZONTAL PLANE ONTO WHICH THE MERIDIAN LINES AND THE CIRCLES OF LATITUDE CAN BE PROJECTED

IT IS THE FUNDAMENTAL PLANE OF THE HORIZONTAL COORDINATE SYSTEM, THE LOCUS OF POINTS THAT HAVE AN ALTITUDE OF 0°

Mural Quadrant; or �e Geometrical Relationship Between the Horizon, the Line of Sight, and Gravity

LIMIT OF

SEXTANT – 1/6 O

F A CIRCLE (1/

6 x 36

0° = 60

°)

LIMIT OF

QUADRANT – 1/4 OF A CIRCLE (1/4 x 360° = 90°)

HORIZON LINE

0° DATU

M LIN

E

(WH

EN

MIRRO

R2 IS PARA

LLEL TO

MIRRO

R1)

CONSTANT LINE OF REFLECTION (B/W MIRROR 1 + 2)

MIR

ROR2

” (4

0°)

MIR

ROR2

’ (30

°)

MIR

ROR2

(VA

RIA

BLE

AN

GLE

)

MIR

ROR1

(CO

NST

AN

T)

A.o.I: ANGLE of INCIDENCEA.o.R: ANGLE of REFLECTIONA.o.I = A.o.R

LINE OF SIGHT

A.o.I 2

A.o.I 3

A.o.I 1

A.o.R 2

A.o.R 3

A.o.R 1

2.5° INCREMENTS (ACTUAL); 5° INCREMENTS (CALIBRATED)

BECAUSE OF THE USE OF MIRRORS, THE ANGLE MEASURED IS TWICE THE LENGTH OF THE INSTRUMENT’S ARC – [NOTED AS (CALIBRATED)]

A NAVIGATION’S SEXTANT IS USED TO MEASURE THE ANGLE

BETWEEN A CELESTIAL BODY (SUN, MOON, OR STAR) AND THE HORIZON

THE

AD

JUST

ABL

E M

IRRO

R IS

USE

D T

O S

IGH

T A

CE

LLE

STIA

L BO

DY

THIS ANGLE, KNOWN AS THE ALTITUDE, TOGETHER WITH THE TIME AT WHICH

THE MEASUREMENT WAS TAKEN, CAN BE USED TO DETERMINE ONE’S TERRESTRIAL POSITION

CP OF CIRCLE / PIVOT POINT OF MIRROR2

Navigator’s Sextant; or �e Geometrical Relationship Between the Horizon, the Line of Sight, the Angle of Incidence, and the Angle of Re�ection

42°19'53.55"N 42°19'53.55"N

83°

2'4

8.10

"W 8

3° 2

'48.

10"W

42°20'9.24"N 42°20'9.24"N

83°

2'5

9.10

"W 8

3° 2

'59.

10"W

42°20'0.37"N 42°20'0.37"N

83°

3'5

.85"

W 8

3° 3

'5.8

5"W

42°19'58.69"N 42°19'58.69"N

83°

3'5

.74"

W 8

3° 3

'5.7

4"W

42°19'59.24"N 42°19'59.24"N

42°19'47.05"N 42°19'47.05"N

83°

2'4

6.32

"W 8

3° 2

'46.

32"W

42°19'46.15"N 42°19'46.15"N

83°

2'4

5.58

"W 8

3° 2

'45.

58"W

MAGNETICDECLINATION:

42°20'9.62"N 42°20'9.62"N

83°

2'2

6.71

"W 8

3° 2

'26.

71"W

42°20'10.83"N 42°20'10.83"N

83°

2'2

5.01

"W 8

3° 2

'25.

01"W

42°20'12.91"N 42°20'12.91"N

83°

3'3

.08"

W 8

3° 3

'3.0

8"W

CAMPUSMARTIUS

PARKDETROIT’S

POINT ofORIGIN

GUARDIAN BUILDING

GUARDIAN TOWER

BOOK TOWER

BOOK BUILDING

DAVID BRODERICKTOWER

GREEKTOWN CASINOGREEKTOWN TOWER

MA

GN

ETI

C N

ORT

H

MA

GN

ETI

C N

ORT

HM

g N

Mg N

Mg N

MA

GN

ETIC N

ORTH

MA

GN

ETIC N

ORTH

MA

GN

ETIC N

ORTH

MA

GN

ETI

C N

ORT

H

GREEKTOWNSTATION

BRICKTOWNSTATION

CADILLAC CENTERSTATION

BROADWAYSTATION

GRAND CIRCUSSTATION

TIMES SQUARESTATION

MICHIGAN AVE.STATION

FORT/CASSSTATION

COBO CENTERSTATION

JOE LOUIS ARENASTATION

FINANCIAL DISTRICTSTATION

MILLENDER CENTERSTATION

RENAISSANCE CENTERSTATION

Detroit, MI, Drawn as Co-ordinates as It Relates to Its Own Navel

The Geographers, Looking Down at the Earth

CLCL

CL

CL

The Yard, Measuring the Yard

CLCL

CL

CL

The Caretaker, Surveying in Suspended AnimationThe Astrographers, Looking Up at the Sky

CLCL

CLCL

CL

CL

The Caretaker’s Apartment and Archive

CLCL

CL

CL

The Geographer’s Den and Mechanism

The Astrographer’s Den and Mechanism