one statics and strength of materials Syllabus Course Description Course Description DR. ANNE NICHOLS SPRING 2007 statics mechanics of materials
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1 ARCHITECTURAL STRUCTURES I: STATICS AND STRENGTH OF MATERIALS Syllabus DR. ANNE NICHOLS SPRING 007 lecture one statics and strength of materials TOPIC 1 F005abn Introduction Course Description statics 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 Course Description mechanics of materials 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 Introduction 3 Introduction 4 1
2 Structural System Selection kind & size of loads building function soil & topology of site systems integration fire rating construction ($$, schedule) architectural form Structure Requirements (cont) strength & stiffness concerned with stability of components Introduction 7 Lecture 1 Su005abn Introduction 6 Structure Requirements stability & equilibrium STATICS 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 5 Introduction 7
3 Problem Solving 1. STATICS: equilibrium of external forces, internal forces, stresses. GEOMETRY: cross section properties, deformations and conditions of geometric fit, strains 3. MATERIAL PROPERTIES: stress-strain relationship for each material obtained from testing Introduction 8 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 9 Architectural Structures incorporates stability and equilibrium strength and stiffness economy, functionality and aesthetics uses sculpture furniture buildings 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... Introduction 10 Introduction 11 3
4 The Fist Detroit, MI AISC (Steel) Sculpture College Station, TX Introduction 1 Introduction 13 Jamborie Philadelphia, PA Daniel Barret Exploris Mobile Heath Satow Introduction 14 Introduction 15 4
5 Telamones Chicago, IL Walter Arnold Free Ride Home 1974 Kenneth Snelson Introduction 16 Introduction 17 Zauber Laudenslager, Jeffery Conference Table Heath Satow Introduction 18 Introduction 19 5
6 Bar Stool Stainless Butterfly Daniel Barret Chair Paul Freundt Introduction 0 Introduction 1 End Tables Rameu-Richard Steel House, Lubbock, TX Robert Bruno Introduction Introduction 3 6
7 Tjibaou Cultural Center, New Caledonia Renzo Piano TOPIC 4 Guggenheim Museum Bilbao Frank Gehry (1997) F004abn TOPIC 5 Photographer: John Gollings F004abn Padre Pio Pilgrimage Church, Italy Renzo Piano TOPIC 6 Photographer: Michel Denancé F004abn Athens Olympic Stadium and Velodrome Santiago Calatrava (004) Introduction 7 Elements of Architectural Structures ARCH 614 S005abn 7
8 Milwaukee Art Museum Quadracci Pavilion (001) Santiago Calatrava Airport Station, Lyon, France Santiago Calatrava (1994) TOPIC 7 F004abn TOPIC 8 F004abn Centre Georges Pompidou, Paris Piano and Rogers (1978) Hongkong Bank Building (1986) Foster and Partners TOPIC 9 F004abn Introduction 4 8
9 Meyerson Symphony Center Dallas, TX Pei Cobb Freed & Partners Crystal Cathedral, LA Philip Johnson (1980) Introduction 5 TOPIC 3 F004abn Federal Reserve Bank Minneapolis, MN Gunnar Birkerts & Associates Hysolar Research Building Stuttgart, Germany ( ) Gunter Behnisch Introduction 6 Introduction 7 9
10 Notre Dame Cathedral Paris, France Maurice de Sully Introduction 8 Habitat 67, Montreal Moshe Safdie (1967) TOPIC 36 F004abn Villa Savoye, Poissy, France Le Corbusier (199) TOPIC 37 F004abn Riola Parish Church Riola, Italy Alvar Aalto Introduction 9 10
11 Kimball Museum, Fort Worth Kahn (197) TOPIC 39 F004abn Structural Math 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 31 Structural Math physics takes observable phenomena and relates the measurement with rules: mathematical relationships need reference frame measure of length, mass, time, direction, velocity, acceleration, work, heat, electricity, light calculations & geometry Physics for Structures measures US customary & SI Units US Length in, ft, mi Volume Mass gallon lb mass Force lb force Temperature F SI mm, cm, m liter g, kg N, kn C Introduction 3 Introduction 33 11
12 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 Introduction 34 z y x Language symbols for operations: +,-, /, x symbols for relationships: (), =, <, > algorithms cancellation 5/ / 1 = = = factors 5/ 6 6 / 3 3 signs x 1 ratios and proportions 6 = 3 power of a number 10 3 = 1000 conversions, ex. 1X = 10 Y 10Y 1X operations on both sides of equality or = 1 1X 10Y Introduction 35 On-line Practice Webct / Study Tools Geometry angles right = 90º acute < 90º obtuse > 90º π = 180º triangles b h area = hypotenuse total of angles = 180º B A C AB + AC = BC Introduction 36 Lecture 1 Su005abn Loads and Forces 6 1
13 Geometry lines and relation to angles parallel lines can t intersect Geometry intersection of a line with parallel lines results in identical angles perpendicular lines cross at 90º intersection of two lines is a point two lines intersect in the same way, the angles are identical opposite angles are equal when two lines cross Loads and Forces 7 Loads and Forces 8 Geometry sides of two angles are parallel and intersect opposite way, the angles are supplementary - the sum is 180 two angles that sum to 90 are said to be complimentary + γ = 90 γ 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 Loads and Forces 9 Loads and Forces 10 13
14 Geometry D similar triangles have proportional sides B C Loads and Forces 11 A γ A B C E C γ B AB AD A = AC AE AB = A B = BC DE AC = A C BC B C Trigonometry for right triangles opposite side sin = = sin = hypotenuse adjacent side cos = = cos = hypotenuse opposite side tan = = tan = adjacent side Loads and Forces 1 AB CB AC CB AB AC C SOHCAHTOA B A Trigonometry cartesian coordinate system origin at 0,0 coordinates in (x,y) pairs x & y have signs Y Quadrant II 3 Quadrant I Quadrant III-4 Quadrant IV -5-6 X Trigonometry for angles starting at positive x sinis y side cosis x side sin<0 for cos<0 for tan<0 for tan<0 for X Y Loads and Forces 13 Loads and Forces 14 14
15 Trigonometry for all triangles sides A, B & C are opposite angles, & γ LAW of SINES sin sin sinγ = = A B C LAW of COSINES A = B + C B γ A BC cos C 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 Loads and Forces 15 Loads and Forces 16 Algebra solving one equation only works with one variable ex: x 1 = 0 add to both sides x 1+ 1 = x = 1 divide both sides / x 1 = / get x by itself on a side x = 1 Loads and Forces 17 Algebra solving one equations only works with one variable ex: x 1 = 4x + 5 Loads and Forces 18 subtract from both sides subtract from both sides divide both sides get x by itself on a side x 1 x = 4x + 5 x 1 5 = x / / x = = / / x = 3 15
16 Algebra solving two equation only works with two variables ex: x + 3y = 8 look for term similarity 1 x 3y = 6 can we add or subtract to eliminate one term? add get x by itself on a side x + 3y + 1x 3y = x = 14 14x 14 = = x = Loads and Forces 19 16
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