{{Techniques infobox
|image           = Truss-spacers.scad.png
|designers       = Phil and RJ Jergenson, [[User:Tim|Timothy Schmidt]]
|date             ======
|vitamins         ======
|materials        ======
|transformations  ======
|lifecycles       ======
|parts           = [[Frames]], [[Nuts]], [[Bolts]], [[End caps]]
|techniques      = [[Bolting]], [[Triangles]]
|tools           = [[Wrenches]]
|git              ======
|files            ======
|suppliers        ======
|reversible      = true
}}

[[Category:Techniques]]

====== Introduction ======
A truss consists of [[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 ======
<gallery>
Truss-simple.scad.png|Simple truss
Truss-spacers.scad.png|Truss with spacers or [[stacked washers]]
Truss-craftsman.scad.png|Truss with [[tri joints]]
</gallery>
  *  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]]