====== trusses ======

^ Techniques infobox ^^
| Image | {{:archive:truss-spacers.scad.png?240}} |
| designers | Phil and RJ Jergenson, [[:user:tim|Timothy Schmidt]] |
| date |  |
| vitamins |  |
| materials |  |
| transformations |  |
| lifecycles |  |
| parts | [[:frames|Frames]], [[:nuts|Nuts]], [[:bolts|Bolts]], [[:end_caps|End caps]] |
| techniques | [[:bolting|Bolting]], [[:triangles|Triangles]] |
| tools | [[:wrenches|Wrenches]] |
| git |  |
| files |  |
| suppliers |  |
| reversible | true |

[[:category:techniques|Category:Techniques]]

==== Introduction ====

A truss consists of [[:frames|frames]] connected at joints. Trusses are typically composed of triangles because of the structural stability of that shape and design.

==== Challenges ====

A triangle is the simplest geometric figure that will not change shape when the lengths of the sides are fixed. In comparison, both the angles and the lengths of a four-sided figure must be fixed for it to retain its shape.

==== Approaches ====

{{:archive:truss-simple.scad.png?600|Simple truss}}

{{:archive:truss-spacers.scad.png?600|Truss with spacers or stacked washers}}

{{:archive:truss-craftsman.scad.png?600|Truss with tri joints}}

  * 2, 3, 4, 5 wide for similar function as 2040, 2060, 2080, 20100 extrusions.  bolted across in an alternating diamond pattern for widths > 3 and bolt-length of 3.

==== References ====

  * [[https://en.wikipedia.org/wiki/Truss|Wikipedia: Truss]]
  * [[https://en.wikipedia.org/wiki/Space_frame|Wikipedia: Space frame]]

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[[https://github.com/timschmidt/replimat/blob/e0bc0b855bb946bab00c75ca0d8b002ae0dc0172/wiki/trusses.html|Original archived page]] — revision 9015, 2021-10-23T17:58:31+00:00, by Tim.