How Does the Young’s Modulus of a Sweet Lace Compare to the Young’s Modulus of the Cables Supporting the Millennium Bridge ? How Does the Young’s Modulus of a Sweet Lace Compare to the Young’s Modulus of the Cables

I will be explaining four of the most popular types of truss bridges in this paragraph. One type of truss is the Allan truss bridge. The Allan truss bridge been in the world of truss bridges for a long time. A fact of the Allan truss is it was first ever build in the 1800s, and the first time the Allan truss was designed was on the date of August 13, 1894. Aldo Alan truss aren’t as common as today there still a very good truss bridge, and quite efficient. Next truss bridge is the Warren truss bridge. A Warren truss bridge is one of the most commonly built truss bridge. That because a Warren truss bridge is simple and is not a big task to build. It uses equilateral triangles to spread out all of the loads from the bridge. It works very well due to all of the triangles minimizing the forces of tension and compression. It’s said to be really light but very efficient, and strong. Another type of truss bridge is a much known truss bridge which is the Baltimore truss bridge. A Baltimore truss bridge is very common to a Pratt truss, the only differences are its additional branchy which is much lower compare to the Pratt truss. The reasons of that are it prevents bucking in the members. The Baltimore truss was first built in the year 1871 for railroads it was first build in the areas such as Baltimore, Pennsylvania, and Ohio. Today it’s one of the most famous type truss bridges in the world. The last bridge on the list is a Pratt truss bridge. It was first develop in the 1800s, and was designed by Caleb Pratt and Thomas in the year 1844. It has a unique and good usage of iron and was first used as a railway which was very popular. It’s very solid and good at taking on compression and tension. Its form is vertical and diagonal that go towards the center of the bridge. Today it’s known as a simple and strong truss bridges that work very efficient and give it one of the tops spots as one of the truss bridges

In the middle of nowhere, in that vast expanse of trees, lies The Bridge. Nobody knows it as any other name. It stretches across the Dead River, just sitting there waiting for someone new to find it. At one time it was driven over constantly, a way of travel for the inhabitants who are crazy enough to live out there. But now it is just there, a giant chunk of metal, rusting away into nothing. Occasionally it is used for things like fishing, or as a

In the spring of 1989, the construction of the new bridge began. The base of the Trent River was a flotilla of barges carrying the workers, cranes and equipment needed to prepare the temporary pillars that would support the new bridge, as well as maneuver the huge steel girders into place for the new bridge. It was an awesome sight for the entire town, as we watched barges float the steel girders into the harbour, one section being 74 meters in length and two more that were 54 metres each. The new steel box girder bridge had a total length of 182 metres and weighed 2,950 metric tonnes (Anderson & Trenkler, 1991). Temporary cement pillars were poured to support

During the construction, two half-spans being assembled 50 meters above ground level had a misalignment of 4.5 inches or 114mm in camber. It was suggested by John Holland & Constructions to use a kentledge to weigh down the higher section of bridge. It so happened that they had ten, eight tonne concrete blocks on site. These were placed halfway along the higher span to

This paper explores the construction aspects of arch bridges, specifically the New River Gorge Bridge near Fayetteville, West Virginia. Arch bridges are one of the oldest types of bridges and have been used for thousands of years across the world. These structures can be constructed of stone, brick, reinforced concrete or steel and can span thousands of feet across wide rivers or deep valleys. The construction of arch bridges relies on the concept of compression and begins with the load at the top of the arch, or keystone. The New River Gorge Bridge in West Virginia was completed in 1977 and is a true engineering marvel. Its construction and existence allows drivers and cargo to traverse the New River Gorge efficiently and safely, an otherwise impassable obstacle.

The bridge of sighs is This lab use spaghetti with the bridge to see how many pennies it can hold.There are interesting facts about bridges ,I also stated its tie to our lab. Thousands of tourists have crowded onto and around San Francisco's Golden Gate Bridge to celebrate the iconic structure's 75th birthday.Crowds partied across its three-kilometer length, boats cruised on the water below and a finale of fireworks lit up the San Franciscan sky. It took four years to build, costing US$35 million and finally opened in 1937. It has remained one of the engineering world's most famous poster boys since. But it's not the only bridge that merits celebration.Here

It is a very unique bridge. A suspension bridge is a bridge with the weight of the deck supported by cables suspended from larger cables that run between the towers. The main parts of a suspension bridge are the towers, anchors, main cables, suspension cables, and the road way. It is one of the most expensive bridges to build in the world. Suspension bridges are mainly made out of steel these days. But some of them are made out of different things. A suspension bridge is very different from arch bridges, even though there can be arch in a suspension bridge.

They are considered expensive to fabricate today, being labour intensive. Maintenance issues have to be carefully addressed (for example, ease of access). However, they can still show advantages in particular applications such as footbridges and railway bridges. Typical spans in one form or other can range from 40m to 500m.

Bridges come in a wide range of shapes, sizes, lengths, and heights, however all of these factors depend on the setting and the location of the bridge. After doing extensive research on a variety of websites I’ve found out that there are about 4 main different types of bridges, each is composed of a different type of system, a beam system, a truss system, an arch system, or a suspension system. Beams tend to be horizontal and quite long, because of this they usually require beams underneath to provide support. Trusses are frameworks made up of many triangles that provide support for a given structure like roofs or in this case, bridges; truss bridges are very rigid and are able to go higher than most bridges. When arches are used in bridges they create great strength, they tend to be harder to construct and are composed of many parts and some even have cables to hold the arches up. The final type of bridge is the bridge composed of cables and is called a suspension bridge because this bridge is held up by many cables and is suspended above an area, and it also has a truss system underneath to provide better stability, this is one of the most common bridges. I also did some research on some reasons why bridges collapse, and I found out that a very common problem that has caused many bridges to fail and

Arch bridge is one of the most popular types of bridges, it came into use over 3000 years ago and remained in height of popularity until industrial revolution and invention of advanced materials that make architect to create other modern bridge designs. However, even today arch bridges remain in use, the arches can be built on much larger scales with the help of modern materials. Its curved design is the basic principle of arch bridge, it does not push load forces straight down, but instead they are transported along the curve of the arch to the supports on each end. These supports (called abutments) carry the load of all of the bridge and are responsible for holding the arch in the accurate position stable position. Transporting of forces across the arch is done through central keystone on the top of the arch. Its weight pushes the surrounding rocks down and outward, making entire structure very rigid and strong.

Because of advancements in today’s technology in construction field, many types of bridges are being constructed depending on the requirement and their suitability for the situations.

In 1940 one of the most modern with the most advanced design suspension bridge Tacoma Narrows collapsed. According to the Board of Experts, the pivotal event in the bridge’s collapse, was the change from the vertical waves to the destructive twisting, torsional motion. This event was associated with the slippage of cable bands at mid span. Normally, the main cables are of equal length where the mid-span cable band attaches them to the deck. When the cable band slipped, the north cable became separated into two segments of unequal length. The unbalance translated quickly to the thin, flexible plate girders, which twisted easily. Once the unbalanced motion began, progressive failure followed.

The angles are used to restrict the motion of central section allowing only the motion in vertical direction to occur and provide the stability to the bridge structure. A chain is also used to stop the central section at any desired height depending on the height of ship assuming a real case situation thus saving the power. The mechanism used to lift the central section is due to the constraint of not using any electric motor or gears. In real case situation, the power can be given by electric motors and cables can be used. The four bridge supporting angles that connect the three sections of the bridge will actually go till the bottom surface of the river.

A pedestrian bridge or footbridge is a bridge constructed for pedestrians and sometimes for cyclists and bikers as well. It reduces the conflicts of traffic flow between the pedestrians and the vehicles by separating them. Hence, it helps in overcoming accidents and offers safety.

Aim of the our project is to provide better facility to pedestrian in existing structure and make traffic free roads with speeds transportation by provide pedestrian over bridge.