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Form and Forces Designing Efficient, Expressive Structures

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ISBN-10: 047017465X

ISBN-13: 9780470174654

Edition: 2008

Authors: Edward Allen, Waclaw Zalewski, Allen

List price: $85.00
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Book details

List price: $85.00
Copyright year: 2008
Publisher: John Wiley & Sons, Limited
Publication date: 10/23/2009
Binding: Hardcover
Pages: 640
Size: 11.00" wide x 9.00" long x 1.25" tall
Weight: 4.070
Language: English

Project Team and Contributors
Designing a Series of Suspension Footbridges
Basic definitions of statics: Loads, Forces, Tension, Compression, Stress
Free-body diagrams; Vectors and scalars; Static equilibrium of concurrent forces
The force polygon and funicular polygon for funicular structures; Bow's notation
Detailing steel rod elements in tension and anchoring to rock
Lateral stability; stiffening a tensile structure
Construction detailing and planning
Designing a Suspended Roof
Families of funicular forms; Relationship of funicular polygon to finding form and forces
Pole-finding strategies; Learning from the force polygon to find optimum forms
Sag ratio; Length of a hanging cable
Detailing and construction using steel cables, sockets, framing, and masts
Designing a Concrete Cylindrical Shell Roof
Shaping funicular arches and vaults in compression
Form-finding: catenary, parabola, circle
Stiffening compressive structures against buckling and unbalanced loadings
Detailing and constructing a thin single-curvature shell
Master Lesson: Designing Simple Trusses
Structural idea generation in three dimensions; The creative process
Graphical truss analysis; Influence of truss form and depth on member forces
Creative latitude in structural design and positive interactions between architects and engineers
Designing a Building on a Vertical Site
Moments of forces
Equilibrium of nonconcurrent forces
Graphical analysis of nonconcurrent forces
Detailing and construction of a steel frame structure on a very difficult site
Designing with Multipanel Trusses
Various methods of analysis for multipanel trusses
Common truss configurations and their uses
Developing and refining the form of complex trusses based upon forces and connections
Detailing and construction of a building with heavy timber trusses
Designing a Fanlike Roof
Extending graphical truss analysis to design fanlike structures that
are compressive or tensile (cable-stayed
Finding good forms and member forces in cable-stayed, fanlike, and treelike structures
Design and detail issues using steel tube construction
Designing Unreinforced Masonry
Contributing Authors: John A. Ochsendorf and Philippe Block
Understanding, designing, and detailing traditional unreinforced masonry
Stability of masonry with, vaults, ties, engaged and flying buttresses
Load tracing and kerns
Graphical analysis of arches of predetermined shape
Design and formal vocabulary of funicular masonry arches and vaults
Master Lesson: Designing a Concrete Shell Roof for a Grandstand
Equilibrium in three dimensions of a composite structure; combining funicular vaults and trusses
Architectural and engineering interactions in designing forms and construction processes
Detailing practices in reinforced concrete foundations and
exposed architectural reinforced concrete
Working in SI
Designing Efficient Trusses
Reversing the graphical process to synthesize shapes of constant-force trusses and arches
Rapid assessment of truss efficiency by comparing force polygons
Finding form and forces for constant-force structures including arches
Designing Restraints for Funicular Structures
Tensile and compressive strategies of restraint to resist shape alterations
Effects of unbalanced loads on structures
Designing Shell and Membrane Structures
Contributing Author: Michael H. Ramage
Form-finding techniques applied to shell, tent, pneumatic, and membrane structures
Material constraints and opportunities
Detailing lightweight structures
Structural Materials
Behavior of structural materials at microscopic level; Comparisons to macroscopic analogies
Responses of materials to stress and loading; Understanding structural deformation and failure
Properties of materials: cohesion, internal friction, brittleness and ductility
Master Lesson: Designing with the Flow of Forces
Trajectories of principal stresses
Strut-and-tie modeling; truss modeling
Three patterns of force flow; applications of basic patterns to any structural element
Use of graphical truss solutions to find forces in truss models
Designing a Bay of Framing
Configuring building frames in three dimensions; laying out a framing plan
Understanding bays, decking, joists, beams, girders, slabs, columns, and framing materials
Load tracing for gravity and lateral loads
Bracing to resist lateral loads
Criteria influencing design of bays in very tall buildings where lateral loads predominate
Integration with vertical transportation, life safety and egress planning, mechanical systems
Bending Action on Beams
Analysis of external load patterns on structures; Quantifying and simplifying external loadings
V and M diagrams; Relationship to force polygons and funicular polygons
Graphical and semigraphical constructions
Bending Resistance in Rectangular Beams
Resistance mechanisms of beams
Lattice pattern of flow of forces
Deflection calculations
Development of mathematical expressions for bending stresses and web stresses in rectangular beams
Designing bays of wood framing
Bending Resistance in Beams of Any Shape
Properties of complex cross-sectional shapes
Moment of Inertia
Composite action
Designing bays of steel framing
Designing Columns and Loadbearing Walls
Types of columns: short, intermediate, long; Buckling and deflection
Designing column restraints; Designing optimum forms for columns
Loadbearing walls
Portal frames, hinges
Architectural and historical expressions of columns
Designing a Sitecast Concrete Building
Composite action of steel and concrete in concrete beams, slabs, and columns
Selection and design criteria for reinforced concrete framing
Opportunities and constraints for slab openings
Relationship of structural typology to program
Designing bays of reinforced concrete framing
Master Lesson: Designing in Precast Concrete
Multi-disciplinary project design teams
Medium-rise building planning and choice of framing systems
Integration with life safety and egress planning
Integration with mechanical and electrical services
Designing with precast concrete framing elements
Designing an Entrance Canopy
Longitudinal shaping of beams to create parallel force flow
Structural articulation at cantilevers and termination details
Afterword: What is Quality?