Andrew Loveless, 1/8/13, Principles of Manufacturing

 Supports simply holding up a slab on the top so things can gross a gap.  Would be used in a situation where you need to make a long bridge without much materials or means to make intricate designs. (ex: putting a log across a gap to make a ‘bridge’)

 A bridge that is made up of both the supports and the bridge itself making an arch, things can cross the top of the bridge  Could be used in order to make smaller size gaps for things to cross under it. (plus, probably looks the simplest out of all the bridges besides beam.)

 A bridge in which is held up by suspension cables connected to pillars  Could be used to make longer bridges because of the spacing available between pillars.

 Cable stayed bridges are pretty much suspension bridges, however the cables connect to the bridge itself rather than the support adjacent to it.  This could be useful where you would need enough support to hold up the bridge itself with the cables instead of the support.

 Two beams support a second beam– where things cross the bridge  This bridge might be good for larger gaps but where a beam or arch bridge won’t be enough

 "Types of Bridges." ThinkQuest. Oracle Foundation, n.d. Web. 14 Jan – Bridge Diagrams  "Features." America's Byways®: National Scenic Byways Online. N.p., n.d. Web. 14 Jan – Beam Bridge  "Design Technology." Design Technology. N.p., n.d. Web. 14 Jan – Cantilever Bridge  "Suspension Domes." Suspension Domes. N.p., n.d. Web. 14 Jan – Cable Stayed

 "Arcsecond." : Depth Perception, Part 1. N.p., n.d. Web. 14 Jan – Suspension Bridge