construction of the bridge Yangmingtan Bridge was a major construction project of the Heilongjiang province. It is the longest river suspension bridge in the north of the Changjiang River in China, so the government gave it great attention. It breaking ground on 2009 December 5th and completed at a marvelous speed and opened to traffic on November 6th, 2011, with an estimated investment of 1.882 billion Yuan (about 300 million dollars) . Considering the traffic around the bridge would increase,…
Intro; A bridge is a structure that is built over a river, road, or railway to allow people and vehicles to cross from one side to the other. (CambridgeDictionaryOnline.com) Bridges come in many different shapes sizes and designs. However there multiple different categories of bridges ranging from Arch bridge, Truss bridge, Cantilever bridge, Cable-Stayed bridge, Beam bridge and Suspension bridge, All ranging with different designs. All of the different bridge designs are made to withstand a…
and water falls between the mountains. The water falls have swinging bridges going across them and not everyone will walk across because of the fear of it breaking or swinging too much. So my idea is to have the children build a regular bridge with a roof that does not swing and sheds shade to those in wheel chairs can enjoy the water falls and bridge as well. In this activity we will use Lincoln logs to build a two layer bridge that stretches across with a covered top. First we will sort the…
walking across the bridge with confidence and faith. But of course, there were pieces of the bridge missing. Every step she took could lead to another step filled with worry or death. As Zoya finally nears the end, she falls. The snakes beneath her rattle louder than before thinking they are going to have dinner, but fortunately, she catches herself. She has a lot of arm and leg strength from working on her family's farm for over 10 years. She pulled herself up, crossed the bridge, and made it…
Discussion: Bridges are affected by both internal and external forces. Internal forces occur within the bridge, through tension, compression, bending, etc. External forces are applied to the outside of the bridge, and can be static or dynamic. The static load of the bridge is the bridge itself, and the weight of its members and components. This is created by the force of gravity pulling on the members of the bridge. The dynamic load moves and changes, such as traffic, people, wind. It is created…
a. The bridge is in Banff, Alberta within Canada’s first national park (Structure Craft, 2013). It was completed in 2013 by Structure Craft Builders and is one of the longest timber bridges in the world, achieving a span of 80m within its total length of 113m (Structure Craft, 2013). b. Principle Structural System The principle structural system is comprised of drilled piers to support 40m long glulam girders cantilevered (Structure Craft, 2013). The elevation of the bridge displays stepped…
A beam bridge or known as a girder bridge, is a bridge structure that consists of horizontal beams spanning supported by pillar at each end of the deck. The weight of the beam including the structure itself, plus any load it carries are supported by the downward force into the pillars. The beam bridge works on the principles of compression and tension, where on top of the bridge bends, it undergoes compression and at the bottom it is subjected to a horizontal tension. Therefore, the bridge must…
As seen in Figure 8 above, Eco Logical Australia recommends the placement of 20 road signs in areas deemed to be high risk. These areas were chosen by analysing the green lines which indicate a high risk road. The overall cost of a sign includes production, installation, and maintenance. This information was extremely difficult to obtain, therefore an estimate has been created. The base cost for a wildlife warning sign is $175 (Seton, 2017). It is then estimated that installation costs are $120…
Bridge Design: Edmond Liu My popsicle bridge is based on a truss design, which is a bridge design held up by a connected structure composed of many smaller pieces. In particular, my bridge is a variation of the Queen Post Truss Bridge, which has two central supporting posts to allow for a greater span allowing for larger contact points. (http://pghbridges.com/basics.htm)…
decided to do a bowstring bridge. A bowstring bridge normally are used to carry road and rail traffic. By bowstring bridges being able to use arches it makes it so that the weight of anything crossing the bridge is actually able to go straight down into the bridge instead of dispersing across the entire bridge. This makes sure that the bridge doesn’t have one spot taking on too much weight on the bridge. Bowstring bridges tend to be become stronger over time because the bridge becomes compact on…