An exercise in structural form
| Arch 324/624, Introduction to Structural Design, University
of Virginia Copyright © 1996-2006 Kirk Martini. Last Modified Mon, 27-Mar-2006 9:35 |
Table
of Contents |
- In Lab 6, you discovered one reason why trusses are used rather than
beams
- Some situations call for more depth than a beam can easily provide.
- A truss allows a strong and stiff structure to be built from relatively small components.
- Some situations call for more depth than a beam can easily provide.
- The problem also highlighted some important aspects of design
- Design is a process of search within a constrained space.
- Design is iterative and cyclic, not linear and direct.
- Some things just don't work.
- Design is a process of search within a constrained space.
- The problem had good and bad points:
- Good: Allows broad exploration of design space, focussing
on behavior rather than calculation details.
- Bad: The problem was pure model manipulation without any sense
of a real structure and how it would be detailed for construction
braced
in three dimensions, or how the structure would look in an architectural
context. It was a "stress invaders" video game.
- Good: The problem allowed you to discover why trusses are
used, and how to look carefully at the assumptions and constraints
of a problem.
- Bad: The constraints were very incomplete, since they did
not include checking the strength of the members, particularly buckling.
- Good: The problem offers an opportunity to show the value of back-of-an-envelope calculations to make decisions about overall form. We'll look at this.
- Good: Allows broad exploration of design space, focussing
on behavior rather than calculation details.
A few solutions.
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| Arch 324/624, Introduction to Structural Design, University
of Virginia Copyright © 1996-2005 Kirk Martini. Last Modified Mon, 27-Mar-2006 9:35 |
Table
of Contents |