one behavior and design of structures Syllabus & Student Understandings Course Description Course Description statics mechanics of materials
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1 ELEMENTS OF ARCHITECTURAL STRUCTURES: FORM, BEHAVIOR, AND DESIGN DR. ANNE NICHOLS SPRING 2015 Syllabus & Student Understandings lecture one behavior and design of structures Introduction 1 S2009abn Introduction 2 Course Description statics Introduction 3 physics of forces and reactions on bodies and systems equilibrium (bodies at rest) structures something made up of interdependent parts in a definite pattern of organization design assessing and meeting structural requirements of parts and the whole S2006abn Course Description mechanics of materials Introduction 4 external loads and effect on deformable bodies use it to answer question if structure meets requirements of stability and equilibrium strength and stiffness other principle building requirements economy, functionality and aesthetics 1
2 Structure Requirements stability & equilibrium STATICS Structure Requirements (cont) strength & stiffness concerned with stability of components Introduction 5 Introduction 6 Structural System Selection kind & size of loads building function soil & topology of site systems integration fire rating construction ($$, schedule) architectural form Knowledge Required external forces internal forces material properties member cross sections ability of a material to resist breaking structural elements that resist excessive deflection deformation Introduction 7 S2006abn Introduction 7 2
3 Problem Solving 1. STATICS: equilibrium of external forces, internal forces, stresses 2. GEOMETRY: cross section properties, deformations and conditions of geometric fit, strains 3. MATERIAL PROPERTIES: Introduction 8 stress-strain relationship for each material obtained from testing Relation to Architecture The geometry and arrangement of the load-bearing members, the use of materials, and the crafting of joints all represent opportunities for buildings to express themselves. The best buildings are not designed by architects who after resolving the formal and spatial issues, simply ask the structural engineer to make sure it doesn t fall down. -Onouye & Kane Statics and Strength of Materials for Architecture and Building Construction Introduction 10 S2006abn Architectural Structures incorporates stability and equilibrium strength and stiffness economy, functionality and aesthetics uses sculpture furniture buildings The Fist Detroit, MI Introduction 10 Introduction 11 3
4 AISC (Steel) Sculpture College Station, TX Jamborie Philadelphia, PA Daniel Barret Introduction 12 Introduction 13 Exploris Mobile Heath Satow Telamones Chicago, IL Walter Arnold Introduction 14 Introduction 15 4
5 Free Ride Home 1974 Kenneth Snelson Zauber Laudenslager, Jeffery Introduction 16 Introduction 17 Bar Stool Stainless Butterfly Daniel Barret Conference Table Heath Satow Introduction 18 Introduction 19 5
6 Chair Paul Freundt End Tables Rameu-Richard Introduction 20 Introduction 21 Steel House, Lubbock, TX Robert Bruno Guggenheim Museum Bilbao Frank Gehry (1997) Introduction 22 Introduction 23 6
7 Tjibaou Cultural Center, New Caledonia Renzo Piano Introduction 24 Photographer: John Gollings Padre Pio Pilgrimage Church, Italy Renzo Piano Introduction 25 Photographer: Michel Denancé Milwaukee Art Museum Quadracci Pavilion (2001) Santiago Calatrava Athens Olympic Stadium and Velodrome Santiago Calatrava (2004) Introduction 26 Introduction 27 7
8 Airport Station, Lyon, France Santiago Calatrava (1994) Centre Georges Pompidou, Paris Piano and Rogers (1978) Introduction 28 Introduction 29 Meyerson Symphony Center Dallas, TX Pei Cobb Freed & Partners Hongkong Bank Building (1986) Foster and Partners Introduction 30 Introduction 31 8
9 Crystal Cathedral, LA Philip Johnson (1980) Federal Reserve Bank Minneapolis, MN Gunnar Birkerts & Associates Introduction 32 Introduction 33 Hysolar Research Building Stuttgart, Germany ( ) Gunter Behnisch Notre Dame Cathedral Paris, France Maurice de Sully Introduction 34 Introduction 35 9
10 Habitat 67, Montreal Moshe Safdie (1967) Introduction 36 Introduction 37 Villa Savoye, Poissy, France Le Corbusier (1929) Riola Parish Church Riola, Italy Alvar Aalto Introduction 38 Kimball Museum, Fort Worth Kahn (1972) Introduction 39 10
11 Architectural Space and Form evolution traced to developments in structural engineering and material technology stone & masonry timber concrete cast iron, steel tensile fabrics, pneumatic structures... Architectural Space and Form structure is a device for channeling loads that result from the use and/or presence of the building to the ground span a roof hold up a floor cross a river suspend a canopy Introduction 40 Introduction 41 Stone + Masonry columns walls lintels arches Wood columns beams trusses Introduction 42 Introduction 43 11
12 Steel cast iron wrought iron - steel cables columns beams trusses frames Concrete columns beams slabs domes Introduction 44 nisee.berkeley.edu/godden Introduction 45 nisee.berkeley.edu/godden Structural Components bearing walls columns beams flat plates trusses arches shells cables Bearing Walls Introduction 46 Introduction 47 12
13 Bearing Walls behavior as deep beams Beams & Plates Introduction 48 Introduction 49 Beams & Plates Building Framing Components or Assemblages Introduction 50 Introduction 51 13
14 Building Framing System Selection evaluation of alternatives Introduction 52 Introduction 53 Structural Math System Selection quantify environmental loads how big is it? evaluate geometry and angles where is it? what is the scale? what is the size in a particular direction? quantify what happens in the structure how big are the internal forces? how big should the beam be? Introduction 54 Math 4 14
15 Physical Math physics takes observable phenomena and relates the measurement with rules: mathematical relationships need Math 5 reference frame measure of length, mass, time, direction, velocity, acceleration, work, heat, electricity, light calculations & geometry Geometric Math Greek architects relied on proportion ratios of dimensions employed were fixed projective geometry Math 6 Renaissance allowed perspective & sections intersections & proportion Melancholia - Albrecht Dürer Basic Math base: addition, subtraction, multiplication, division descriptive geometry relationships existing between geometric elements such as points, lines & planes functions, conversions & graphs relationships between quantities of numerical values graphs used to avoid mental sorting and see relationships quickly Math 7 Language symbols for operations: +,-, /, x symbols for relationships: (), =, <, > algorithms 2 cancellation factors 5/ signs ratios and proportions power of a number conversions, ex. 1X = 10 Y Math 8 operations on both sides of equality 5/ 2 2/ = = = 6 6 2/ 3 x 1 6 = = Y 1X or 1X 10Y 1 3 = 1 15
16 On-line Practice ecampus / Study Aids Geometry shapes rectangle triangle right triangle equilateral triangle rhomboid parallelogram Introduction 61 S2008abn Math 9 Geometry angles right = 90º acute < 90º obtuse > 90º π = 180º triangles area hypotenuse total of angles = 180º B A C 2 2 AB + AC = BC 2 Geometry lines and relation to angles parallel lines can t intersect perpendicular lines cross at 90º intersection of two lines is a point opposite angles are equal when two lines cross β β Math 10 Math 11 16
17 Geometry intersection of a line with parallel lines results in identical angles β β β β Geometry sides of two angles are parallel and intersect opposite way, the angles are supplementary - the sum is 180 two lines intersect in the same way, the angles are identical β two angles that sum to 90 are said to be complimentary β + γ = 90 β γ Math 12 Math 13 Geometry sides of two angles bisect a right angle (90 ), the angles are complimentary γ + γ = 90 right angle bisects a straight line, remaining angles are complimentary γ Geometry D similar triangles have proportional sides B C A γ A β B C E C γ β B AB AD A = AC AE AB = A B = BC DE AC = A C BC B C Math 14 Math 15 17
18 Trigonometry for right triangles opposite side sin = = sin = hypotenuse adjacent side cos = = cos = hypotenuse opposite side tan = = tan = adjacent side Math 16 AB CB AC CB AB AC C SOHCAHTOA B A Trigonometry cartesian coordinate system Math 17 origin at 0,0 coordinates in (x,y) pairs x & y have signs Quadrant II 0 X Quadrant III Y Quadrant I Quadrant IV Trigonometry for angles starting at positive x sin is y side cos is x side sin<0 for cos<0 for tan<0 for tan<0 for X Y Trigonometry for all triangles sides A, B & C are opposite angles, β & γ LAW of SINES sin sin β sinγ = = A B C LAW of COSINES 2 A = B 2 + C 2 B γ A 2BC cos C β Math 18 Math 19 18
19 Algebra equations (something = something) constants real numbers or shown with a, b, c... unknown terms, variables names like R, F, x, y linear equations unknown terms have no exponents simultaneous equations variable set satisfies all equations Algebra solving one equation only works with one variable ex: 2 x 1 = 0 add to both sides 2 x 1+ 1 = x = 1 divide both sides 2 / x 1 = 2/ 2 get x by itself on a side x = 1 2 Math 20 Math 21 Algebra solving one equations Math 22 only works with one variable ex: 2 x 1 = 4x + 5 subtract from both sides subtract from both sides divide both sides get x by itself on a side 2x 1 2x = 4x + 5 2x 1 5 = 2x / 2/ x = = 2 2/ 2/ x = 3 Algebra solving two equation Math 23 only works with two variables ex: 2 x + 3y = 8 12 x 3y = 6 look for term similarity can we add or subtract to eliminate one term? add get x by itself on a side 2 x + 3y + 12x 3y = x = 14 14x 14 = = x =
20 Physics for Structures Physics for Structures measures measures vectors motion of particles center of mass equilibrium of bodies gravitation US customary & SI Units US Length in, ft, mi Volume gallon Mass lb mass SI mm, cm, m liter g, kg fluid mechanics temperature Galileo Galilei Force Temperature lb force F N, kn C Math 24 Math 25 Physics for Structures scalars any quantity vectors - quantities with direction like displacements summation results in the straight line path from start to end normal vector is perpendicular to something y Physics for Structures motion of particles displacement velocity acceleration rotation cause by forces Math 26 z x Math
21 Physics for Structures gravity acceleration of mass toward the earth weight or force due to gravity center of gravity location of mass doesn t change with motion Physics for Structures equilibrium of particles no movement Math 28 Math 29 Physics for Structures fluid mechanics weight of water or fluid causes pressure on any surface it interacts with pressure is force over an area air pressure causes forces water pressure gets greater as it gets deeper Physics for Structures temperature atoms respond to heat (physical chemistry) with heat solid goes to liquid goes to gas excited electrons move apart movement is linear base 0 or freezing at the temperature water freezes at Math 30 Math
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