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SMiA Structural Morphology in Architecture
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Structural Morphology in Architecture SOLIDS
WHY ARE SOLIDS IMPORTANT?
They are the base to understand the
unconventional structural systems like:
• Tensegrity
• Deployable structures
• Reciprocal structures
• Tree like structures
The comprehension of solid’s geometry
allows to explore and apply the
structures with more efficiency.
Relation
between
form and
structure
TENSEGRITY ARCH - KENNETH SNELSON
STTUTGART AIRPORT
GERKAN, MARG & PARTNER GEODESIC EXPANDIBLE DOME- HOBERMAN
RECIPROCAL VAULT
TENSEGRITY POLYHEDRON
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Structural Morphology in Architecture SOLIDS
OUTLINE
1. BACKGROUND
2. BASIC CONCEPTS OF SOLIDS
3. CLASSIFICATION
4. REGULAR SOLIDS: PLATONIC SOLIDS
4.1 DUAL SOLIDS
5. IRREGULAR SOLIDS
5.1 ARCHIMEDEAN SOLIDS
5.2 CATALAN SOLIDS
5.3 PRISMS AND ANTIPRISMS
5.4 PYRAMIDS, DYPIRAMIDS AND DELTOHEDRA SOLIDS
5.5 JOHNSON SOLIDS
6. TOOLS
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
POLYHEDRONS AND GEOMETRY IN NATURE
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
Neolithic Polyhedra
2000 B.C.
Roman Polyhedra
500 B.C
POLYHEDRONS IN THE HUMAN CIVILIZATION
WE USE THEM TODAY
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
Renaissance
Luca Pacioli's portrait,
attributed to Jacopo de'Barbari
1495
Leonardo da Vinci
1452-1519
(draws for the divina
proportione, book)
Giovanni da Verona
1520
POLYHEDRONS AT THE ARTS
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
Alberto Durero
1471-1528
Wentzel Jaminitzer
1508-1585
(Perspectiva
corporum
regularium, book)
POLYHEDRONS AT THE ARTS
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
Johannes Kepler
(mathematician
astronomer)
1571-1630
(Cosmological
Theory)
POLYHEDRONS AT THE ARTS
Maurits Cornelis Escher
1898-1972
Polyhedrons between
1948 and 1954
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND GEOMETRY IN ARCHITECTURE
EGYPT PYRAMIDS
2500 B.C.
LOUVRE PYRAMID, PARIS
1983-1989
Arch. I.M.Pei
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
GEODE, PARIS
1985
Arch. Adrien Fainsilber & Eng.
Gérard Chamaillou
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
PHILLIPS PAVILION, BRUSSELS
Mathematical Sculpture Sculpture
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
DENVER INTERNATIONAL AIRPORT
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HAJ TERMINAL JEDDAH AIRPORT
SAUDI ARABIA
1981
Eng. Horst Berger
Eng. Fazlur Rahman, Skidmore,
Ownings& Merrill
Structural Morphology in Architecture SOLIDS
1. BACKGROUND
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
EDEN PROJECT, UK
2001
Tom Smith & Arch. Nicolas
Grimshow
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
CLOUDY CITY, NEW YORK
2012
Arch. Tomás Saraceno
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Structural Morphology in Architecture SOLIDS
1. BACKGROUND
GIANT PEANUT STRUCTURE, ICD
University of Sttutgart
2014
TRANSPORTABLE HOUSING,
Colombia
2014
Origamitek
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Structural Morphology in Architecture SOLIDS
2. BASIC CONCEPTS OF SOLIDS
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Structural Morphology in Architecture SOLIDS
2. BASIC CONCEPTS OF SOLIDS
DEFINITION
A solid is a closed shape or form in
three dimensions.
Solids are composed by:
FACES
- Curved: ROUNDED BODY
- Flat: POLYHEDRON
EDGES
Intersection of two faces
VERTEX
Intersection of three or more faces
FACES
EDGES
VERTEX
***We will focus at the POLYHEDRONS***
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Structural Morphology in Architecture SOLIDS
2. BASIC CONCEPTS OF SOLIDS
CONCAVE
Are the ones that can't be supported on
one of their faces.
The plane surface of their faces cut the
solid in two.
CONVEX
Are the ones that can be supported on
all their faces.
The plane surface of their faces contain
the solid.
POLYHEDRONS
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Structural Morphology in Architecture SOLIDS
2. BASIC CONCEPTS OF SOLIDS
CONCAVE
Are the ones that can't be supported on
one of their faces.
The plane surface of their faces cut the
solid in two.
CONVEX
Are the ones that can be supported on
all their faces.
The plane surface of their faces contain
the solid.
POLYHEDRONS
***We will focus at the CONVEX POLYHEDRONS***
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Structural Morphology in Architecture SOLIDS
3. CLASSIFICATION
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Structural Morphology in Architecture SOLIDS
3. CLASSIFICATION
REGULAR IRREGULAR
PLATONIC SOLIDS
ARCHIMEDEAN SOLIDS
CATALAN SOLIDS
PRISMS AND ANTIPRISMS
PYRAMIDS, DYPIRAMIDS AND
DELTOHEDRA SOLIDS
JOHNSON SOLIDS
CONVEX POLYHEDRONS can be classified in two groups:
***All the CONVEX POLYHEDRONS fulfill EULER‘S formula***
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Structural Morphology in Architecture SOLIDS
3. CLASSIFICATION
EULER’S FORMULA
F + V = E + 2
F = number of faces
E = number of edges
V = number of vertex
EXAMPLES
4 + 4 = 6 + 2
8 = 8
20 + 12 = 30 + 2
32 = 32
6 + 8 = 12 + 2
14 = 14
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Structural Morphology in Architecture SOLIDS
4. REGULAR SOLIDS:
PLATONIC SOLIDS
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Structural Morphology in Architecture SOLIDS
4. REGULAR SOLIDS: PLATONIC SOLIDS
PLATONIC SOLIDS was studied
mathematically by the Pythagorean
school in the ancient Greece (530 A.C.)
EMPEDOCLES associates four of the
solids with the natural elements.
PLATÓN associates the fifth element
with the universe, because of this, they
are named PLATONIC SOLIDS.
EUCLID formalizes them like
mathematical elements.
Are perfect because
all their faces, edges
and angles are equal.
EARTH
FIRE
UNIVERSE
WATER
AIR
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Structural Morphology in Architecture SOLIDS
4. REGULAR SOLIDS: PLATONIC SOLIDS
NAMES OF THE POLYGONS According to number of sides
PENTA 5 Pentagon
HEXA 6 Hexagon
OCTA 8 Octagon
DECA 10 Decagon
DODECA 12 Dodecagon
ICOSA 20 Icosagon
NAMES OF THE SOLIDS According to number of faces
TETRA 4 Tetrahedron
HEXA 6 Hexahedron (Cube)
OCTA 8 Octahedron
DODECA 12 Dodecahedron
ICOSA 20 Icosahedron
CHARACTERISTICS:
• They are regular solids.
• Their faces are regular polygons
(angles and sides are equal).
• All their faces, edges and angles
are equal.
NAMES
The names of the polyhedrons are formed
by greek roots.
Number of faces + Hedron
(prefix) (root)
Example: A solid with four faces is named
Tetrahedron (Tetra=4, Hedron = face)
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Structural Morphology in Architecture SOLIDS
4. REGULAR SOLIDS: PLATONIC SOLIDS
TETRAHEDRON (4 FACES)
Equilateral Triangles joined
by three in each vertex
HEXAHEDRON OR CUBE (6 FACES)
Squares joined by three in each
vertex
OCTAHEDRON (8 FACES)
Equilateral Triangles
joined by four in each
vertex
DODECAHEDRON (12 FACES)
Pentagons joined by three in
each vertex
ICOSAHEDRON (20 FACES)
Equilateral Triangles joined
by five in each vertex
GEOMETRIC STABILITY
3V=E+6 (SCHÄFLI)
ICOSAHEDRON
3x12=30+6
36=36
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Structural Morphology in Architecture SOLIDS
4. REGULAR SOLIDS: PLATONIC SOLIDS
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Structural Morphology in Architecture SOLIDS
4.1 DUAL SOLIDS
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Structural Morphology in Architecture SOLIDS
4.1 DUAL SOLIDS
FACES VERTEX EDGES PLATONIC SOLIDS
TETRAHEDRON
HEXAHEDRON
OR CUBE
OCTAHEDRON
DODECAHEDRON
ICOSAHEDRON
4
4
6
6
8
12
8
6
12
12
20
30
20
12
30
The duality between
solids is the
correspondence
between the vertexes
of one particular solid
and the centre of the
faces of another solid.
Characteristics
between two dual
solids:
•They have the same
quantity of edges.
•The quantity of faces
of one solid
corresponds to the
quantity of vertexes of
the other.
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Structural Morphology in Architecture SOLIDS
4.1 DUAL SOLIDS
The tetrahedron is the
dual of himself.
To each face of the
octahedron
corresponds one
vertex of the cube
To each face of the
cube corresponds
one vertex of the
octahedron
To each face of the
icosahedron
corresponds one
vertex of the
dodecahedron
To each face of the
dodecahedron
corresponds one
vertex of the
icosahedron
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Structural Morphology in Architecture SOLIDS
4.1 DUAL SOLIDS
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Structural Morphology in Architecture SOLIDS
5. IRREGULAR SOLIDS
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Structural Morphology in Architecture SOLIDS
5.1 ARCHIMEDEAN SOLIDS
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Structural Morphology in Architecture SOLIDS
5.1 ARCHIMEDEAN SOLIDS
TRUNCATED
TETRAHEDRON
TRUNCATED
HEXAHEDRON
TRUNCATED
OCTAHEDRON
TRUNCATED
DODECAHEDRON
TRUNCATED
ICOSAHEDRON
CHARACTERISTICS:
• They are semi-regular convex
polyhedron.
• All their vertexes are regular.
• Their faces are different, but all of
them are regular polygons.
Archimedean Solids they was
studied by Archimedes, he found
and classified them. They are 13
totaly.
11 of this solids are obtained
cutting the vertexes of platonic
solids. This transformation means
that the solid is truncated.
Other two solids are obtained
separating and twisting the faces of
the Cube and of the Dodecahedron.
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Structural Morphology in Architecture SOLIDS
5.1 ARCHIMEDEAN SOLIDS
CUBOCTAHEDRON
Maximum truncation: Is formed by
the cutting of the vertexes in the
middle point of the polygon edge.
The maximum truncation of two
dual solids forms the same solid.
Example: By the cube and the
octahedron is obtained the
Cuboctahedron.
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Structural Morphology in Architecture SOLIDS
5.1 ARCHIMEDEAN SOLIDS
Truncated
Tetrahedron
Truncated
Hexahedron
Truncated
Octahedron
Truncated
Dodecahedron
Truncated
Icosahedron
Cuboctahedron
Icosidodecahedron
Small
Rombicuboctahedron
Small
Rhombicosidodecahedron
Great
Rhombicosidodecahedron
Great
Rombicuboctahedron Snub Cube
Snub
Dodecahedron
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Structural Morphology in Architecture SOLIDS
5.2 CATALAN SOLIDS
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Structural Morphology in Architecture SOLIDS
5.2 CATALAN SOLIDS
CHARACTERISTICS:
• They are semi-regular convex
polyhedron.
• Their vertexes are not regular.
• Their faces are uniform, but not
regular polygons.
The Catalan solids are named for
the Belgian mathematician, Eugène
Charles Catalan.
They are obtained adding a pyramid
on the faces of the platonic solid.
In total they are 13, and they are the
dual of the Archimedean solids.
TETRAKIS
HEXAHEDRON
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Structural Morphology in Architecture SOLIDS
5.2 CATALAN SOLIDS
TRIAKIS
TETRAHEDRON
TETRAKIS
HEXAHEDRON
TRIAKIS
OCTAHEDRON
PENTAKIS
DODECAHEDRON
TRIAKIS
ICOSAHEDRON
RHOMBIC
DODECAHEDRON
RHOMBIC
TRICONTAHEDRON
DELTOIDAL
ICOSITETRAHEDRON
DELTOIDAL
HEXECONTAHEDRON
DISDYAKIS
TRICONTAHEDRON
DISDYAKIS
DODECAHEDRON PENTAGONAL
ICOSITETRAHEDRON
PENTAGONAL
HEXECONTAHEDRON
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Structural Morphology in Architecture SOLIDS
5.3 PRISMS AND ANTIPRISMS
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Structural Morphology in Architecture SOLIDS
5.3 PRISMS AND ANTIPRISMS
PRISMS: They are obtained by the
connection of two polygons
(bases), this connection is made
with parallel faces.
ANTIPRISMS: They are obtained by
the connection of two polygons
(bases), this connection is made
with triangles. Also, they can be
obtained twisting one of the
polygons (bases) in relation to the
other.
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Structural Morphology in Architecture SOLIDS
5.3 PRISMS AND ANTIPRISMS
PENTAGONAL
PRISM
HEXAGONAL
PRISM
OCTAGONAL
PRISM
DECAGONAL
PRISM
TRIANGULAR
PRISM SQUARE
ANTIPRISM
PENTAGONAL
ANTIPRISM
HEXAGONAL
ANTIPRISM
OCTAGONAL
ANTIPRISM
DECAGONAL
ANTIPRISM
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Structural Morphology in Architecture SOLIDS
5.4 PYRAMIDS, DYPIRAMIDS AND
DELTOHEDRA SOLIDS
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Structural Morphology in Architecture SOLIDS
5.4 PYRAMIDS, DYPIRAMIDS AND DELTOHEDRA SOLIDS
PYRAMIDS: They are obtained by
the connection of the polygon
(base) with one point.
DYPIRAMIDS: They are two equal
pyramids joined.
DELTOHEDRA: They are like the
dypiramids but their faces are
deltoids.
SQUARE PYRAMID
HEXAGONAL DYPIRAMID HEXAGONAL DELHEDRA
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Structural Morphology in Architecture SOLIDS
5.5 JOHNSON SOLIDS
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Structural Morphology in Architecture SOLIDS
5.5 JOHNSON SOLIDS
CHARACTERISTICS:
• They are convex polyhedron.
• Their faces are regular polygons,
but not all are the same polygons.
The Johnson solids are named for
the American mathematician, Norman
Johnson. Totally are 92 types.
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Structural Morphology in Architecture SOLIDS
6. TOOLS HOW?
BY MODELS
BY SOFTWARE
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Structural Morphology in Architecture SOLIDS
6. TOOLS
BY MODELS
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Structural Morphology in Architecture SOLIDS
6. TOOLS
BY MODELS
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Structural Morphology in Architecture SOLIDS
6. TOOLS
BY MODELS
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Structural Morphology in Architecture SOLIDS
6. TOOLS
BY MODELS RECYCLABLE MATERIALS
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Structural Morphology in Architecture SOLIDS
6. TOOLS
BY MODELS
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Structural Morphology in Architecture SOLIDS
6. TOOLS
BY MODELS
GEOMAG (magnetic
toy from Switzerland)
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Structural Morphology in Architecture SOLIDS
6. TOOLS
BY MODELS
MODULMAX
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Structural Morphology in Architecture SOLIDS
6. TOOLS
BY MODELS
POLYGONS
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Structural Morphology in Architecture SOLIDS
6. TOOLS
BY SOFTWARE CABRI
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Structural Morphology in Architecture SOLIDS
6. TOOLS
BY SOFTWARE POLY
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Structural Morphology in Architecture SOLIDS
CONCLUSIONS • Solids & Polygons are the base to understand
geometry of unconventional structural systems.
• We have an important tools for FORMFINDING:
- Physical models.
- Digital models by software.
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Structural Morphology in Architecture SOLIDS
LINKS http://en.wikipedia.org/wiki/Polyhedra
http://www.geomagvideo.com/
http://www.modulmax.com/
http://www.cabri.com/download-cabri-3d.html
http://www.peda.com/poly/
http://www.youtube.com/watch?v=rzO1kkxlK9I (paper)
https://www.uam.es/personal_pdi/ciencias/barcelo/historia/Los%20solidos
%20platonicos.pdf (paper)
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Structural Morphology in Architecture SOLIDS
THANKS!!!!