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Unit d  -section 1.1-1.2 -- classifying and function of structures
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Unit d -section 1.1-1.2 -- classifying and function of structures

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  • 1.  The first thing that one will notice about a structure is its shape There are three basic structural forms that are commonly used in our world both naturally and man-made ◦ Solid ◦ Shell ◦ Frame
  • 2.  Is formed from one solid piece or a combination of solid pieces of a strong material This structure has little or no open space inside of it and relies on its own mass to resist forces Are usually stronger than the frame or shell structures but also extremely heavy
  • 3.  Made up of a rigid arrangements of parts all fastened together No individual component of the frame is as strong as the frame as a whole Can be arranged 2-dimensional or 3- Dimensional Are lighter than a solid structure because there is less material used
  • 4.  Has a solid outer surface, which may be rounded or flat with a hollow interior Rounded surfaces are usually stronger than flat shaped, because a curved area distributed the load more evenly This structure is lighter than a solid structure Are usually stronger than a frame structure and more commonly used for protection
  • 5.  You are a landscape designer who has been hired to create benches for the HEB school ground that will last a long time and not be easily removed.Using structural forms discussed previously you choose a solid structure design as the best choice. So 10 block like benches are built. A few months later a member of the school council calls you about some concerns regarding your benches.WHY?
  • 6.  Many structures are designed to serve more than one FUNCTION (use or purpose) Using the bench problem as an example we can notice that the main function of the benches were over looked. ◦ Too much attention was given to designing the bench that was durable and secure ,and not enough to the comfort and appealing look of them
  • 7.  When a designer has all of the expected functions of a structure they are more able to produce a quality product Structures today are commonly created for two things; ◦ To shelter people ◦ To shelter moving cargo ◦ Think of an airplane design – which does it provide??
  • 8.  Technological problems can often be solved in a variety of ways using many different structural designs, materials, and processes To get ideas for structures that meet particular functions many designers look to the natural world ◦ Ever notice how barbed wire resembles a thorn bush?
  • 9.  Some structures look very different from one another but they all serve the same purpose Over time people have found what work and what doesn’t work through trial and error methods. ◦ How will a house with a flat roof work in a high mountain area?
  • 10.  Many human-made products resemble the natural world ◦ Eg. Flippers and duck feet ◦ Bat wings and airplane wings ◦ Barbed wire and a thorn bush
  • 11.  One way structures can be classified is based on their aesthetic quality Aesthetics refers to the pleasing appearance or effect that an object has because of its design Not all structures need to be aesthetically pleasing Humans throughout time and cultures have always attempted to decorate their homes on the outside and inside so that they are attractive ◦ First Nation Teepees