Bridges By Mr Huebsch Design Process Find the
Bridges By Mr. Huebsch
Design Process Find the problem Brainstorm ideas Clarify ideas Test your ideas Create Models Accept, Reject and Alter ideas
Vocabulary Construction – the action of building Structure – any form or shape Bridges – anything that covers a space or spans a distance
Types of Bridges Early Bridges n n Fallen Logs Rope w Ok for people to cross but not good for heavy loads. w Short spans
Types of Bridges Truss Bridges n n n Can be made of Steel or stone Not capable of long spans Can handle heavy loads w Railroad bridges
Types of Bridges Arch Bridges n n n Can be made of Steel or stone Capable of longer spans Can handle heavy loads w One built in during the Roman Empire still stands. 2000 years old
Types of Bridges Suspension Bridges n n n Made of Steel and cable Capable of the longest spans of any type of bridge Can handle heavy loads Examples
Types of Bridges Cantilever Bridges n n n Type of truss Bridge Two halves starting at the banks and joined with a section in the middle Examples
Types of Trusses! King Post
Types of Trusses Warren Truss
Types of Trusses Pratt Truss
Types of Trusses K-Truss
Types of Trusses Whipple Bowstring
Types of Trusses Bollman
Cuts Cross Overs – Each time a line crosses another line you will need to make a cut – On one line for this bridge a minimum of 12 cuts will need to be made!
Types of Trusses Town Lattice
Types of Trusses Howe Truss
Travel Surfaces Pony Truss Traffic travels through
Travel Surfaces Through Truss Traffic travels through
Travel Surfaces Deck Truss Traffic travels on top
Considerations Hold 20 pounds Be 12 inches long Be 2 inches wide Not use more than 192 inches of wood At least 2 inches tall
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