Truss Bridge Essay

767 Words2 Pages

Introduction
During the years, there have been many bridge that have collapsed, causing many lives to be put in danger and lost. This project is to determine how much weight it would take for different scale model designs of truss bridges to collapse when weight, pressure, and gravity is applied to them. This experiment will test which truss bridge designs of, Pratt, Warren, and Howe. I chose this project because I want to see which truss bridge could hold the most weight capacity.
Bridges are structures used by people and vehicles to travel across lakes, river, highways, railroads, and canyons. Bridges are important to the world and society because they connect communities that are separated from water between them and allow others to see …show more content…

Pratt has diagonals under heavy tension, while verticals are under compression as they slope down toward the center (History of a Truss Bridge). Pratt truss verticals function as compression members, while diagonals function as tension members. Hip verticals are adjacent to inclined posts of the bridge. Pratt trusses are commonly used for railroad bridges. They a take longer time to build because of the more complex design where downward beams attach to the vertical beams (Difference Among Warren Truss, Howe Truss, and Pratt Truss, …show more content…

Howe truss have metal vertical tension rods and timber diagonal compression members. Combination truss is a joint of metal and wood materials for bridge components that has a significant transitional feature in the development of metal truss bridges (History of a Truss Bridge). Howe truss bridges take a longer time to build because of the more complex design where the vertical and diagonal members slope up towards the center (Difference Among Warren Truss, Howe Truss, and Pratt Truss, 2014).
Bridges are important to the world and society because they connect communities that are separated from water between them and be able to let others see people that are not as far as flying distance, but cannot be a short car ride. Bridges are often used to gaze at beautiful sunsets and areas that can be seen from standing on the

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