1

Philippe Block · Joseph Schwartz

Course leaders:

Dr. Tomás Méndez EchenaguciaDr. Matthias Rippmann

Structural Design VI

3

Fabrication-aware Structural DesignIntroduction

Computational Methods in StructuralDesign

Parametric Design Parametric GraphicStatics

Digital FabricationOf Structures

Form Finding Construction and Panelisation ofShells and TensileStructures

Optimisation Design to Production Computational Methods in theArchitectural Practice

Advanced topics

Structural Design VI: Computational Methods

4Basic 3D modelling in Rhino3D

Learning goal for this exercise:

• Getting to know Rhino 3D basics

• Curve modelling

• Surface modelling

Rhino file:

• 01_01_intro_rhino_ basefile_MP.3dm

5

Introduction

Basics

Curve Modelling

Surfaces

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Image: The Witchdoctor

Geometry types

Solids

NURBS

Polygons

Add-ons

7Units

8Interface

Status bar

Properties&

Layers

Command lineShelf

Toolbar

Menu bar

Viewport

9Shading modes

Wireframe Shaded Rendered

Ghosted X-Ray Technical

Artistic Pen Custom

10Shading modes

11Navigation

Pan

Orbit

Zoom

+

+

Perspective view Parallel view

Zoom window

Zoom extents

Zoom selected

+/ +/

12

Introduction

Basics

Curve Modelling

Surfaces

13Creating Objects

14Drawing Aids

END – snap to end of a curve

NEAR – snap to a point near point on a curve

POINT – snap to a point

MID – snap to middle of a curve

CEN – snap to center of circle or arc

INT – snap to intersection of two curves

PERP – snap perpendicular to a curve

TAN – snap tangent to a curve

QUAD – snap to quadrants of a circle

KNOT – snap to knot on curve or surface

15Organization

16Organization

Pierre Varignon: Nouvel mécanique ou statique (1725)

Create new layerCreate new sublayerDelete layerMove layer up/down

Parent layer ( may not have duplicate names)Sublayers (may have duplicate names)

Layer visibilityLock layerLayer color propertiesLayer material propertiesLayer line object properties

17Construction planes

18Selecting Objects

Drag window left to right

select only objects fully included in the window

Drag right to left

select any object it crosses

19Transformations

Move:

From reference point to reference point

Scale:

By factor or from reference point to reference point

Rotate:

Around reference point axis

20

Introduction

Basics

Curve Modelling

Surfaces

22Non-Uniform Rational B-Spline (NURBS)

Shipbuilding in 19th century Citroen DS (1955)

23Non-Uniform Rational B-Spline (NURBS)

(image: http://www.alatown.com/spline-history-architecture/) Citroen DS (1955)

24Curve Degree

Degree: 1

Degree: 2

Degree: 3

….

25Curve Degree

Degree: 1

Degree: 2

Degree: 3

….

26Curve Editing

_POn

_Rebuild

Moving points

Deleting points

_ InsertControlPoint

27

Introduction

Basics

Curve Modelling

Surfaces

28Example 1 – VitraHaus

Curves

create curveedit curvessplit and joinoffset

Create surface from curves

extrudesweeploftplanar surface

29Example 2 – Arch_tec_lab

Create surface from curves

network surfacepatchedge surface

30In class exercise– Rolex learning centre

Create surface from curves

network surfacepatchedge surfaceextrude

Curves and surfaces:

project, pull

Surface editing

_ponsplitmake holeboolean split

31Bonus example – spiral staircase

Create surface from curves

extrudesweeploft

Edit surfaces:

jointrim split fillet

Curves and surfaces:

project, pullintersect interpolate on surface

Extract curves from surfaces

32Help

33Help