The Truss Bridge By David Plowden

As the conclusion, Warren truss was the strongest one out of all the three walkway design followed by the Howe truss and lastly the Pratt truss. Warren truss is mostly used in walkway construction simply because it takes less time to build this structure and also less materials are needed. This is due to the facts that, Warren truss is actually a series of isosceles triangles or equilateral triangles. In contrast to Warren truss, Howe and Pratt trusses have its diagonal members which are slanting away from the middle for Howe truss and slanting down towards the middle for Pratt truss. With this additional slanted member, the production cost are definitely higher than the cost for Warren truss.

"The book is really good, it tells a story about a man who has to blow up a bridge during the spanish civil war. It is a exciting story and a good book to read. The story starts like this: The novel graphically describes the brutality of the civil war in Spain during this time. It is told primarily through the thoughts and experiences of the protagonist, Robert Jordan. It draws on Hemingway's own experiences in the Spanish Civil War as a reporter for the North American Newspaper Alliance.[citation needed]

Truss bridges have been around for a long time. I see truss bridges the most out of all the different types of bridges and to me it seems like the most popular type of bridge. In addition there are thirty different types of Truss bridges which means that there is a bigger variety of Truss Bridges instead of just having one type. Truss bridges have triangular shaped beams that go all across the bridge. The bridge also is above the roadway instead of under the roadway like the arch bridge. Truss bridges could also stretch very far. The longest cantilever Truss bridge that goes is called Crescent City Connection and it is 13,418 feet long with a width of 52 feet. There is also a really long Truss bridge that is near Hoboken, the name of the bridge

Warren truss has members joined only by angled cross-members. This forms equilateral truss. It is light and strong and makes an economical truss.

The purpose of this report is to introduce the roof truss that I had designed for the project of design studio 1 which is personal space. I have included the following content for the design: characteristics, cons and pros, sketch and label, and cross section of the design. The roof truss that I had design for the personal space building is king post truss (also known as crown post truss). According to online dictionary, the definition of king post is a structural member running vertically between the apex and base of triangular roof

There are several characteristics for the king post truss. King post truss is generally found in wooden frame buildings when there are large spaces are needed and not using the column. It is characterized by two diagonal pieces of wood or metal which ends are stabilized on the end of a chord above the ground. Besides, the design of this truss is simple and takes less timber and metal. Therefore, it cost lower than other truss and also extremely

The construction process of our model suspension bridge went smoothly. We designed a blueprint that showed our bridge in a life size scale. The materials used to build our bridge included two 18 inch tall two by fours for the anchoring towers of the suspension bridge, one 30

It is shaped in a way to transfer weight to the towers and anchors with its tension (O'Connor, 1971, p. 372). Cables are made of high strength wires spirally bound to form a rope (O'Connor, 1971, p. 372). Vertical cable suspenders that are fastened to the main cables hang the actual roadway. Stiffening girders and trusses are along the side of the bridge to distribute concentrated loads and help to keep the motion of the bridge at a minimum (Troitsky, 1994, p115).

There are over 30 different types of truss bridges. Though the most common four bridges are the Warren truss bridge, Pratt truss bridge, Howe truss bridge, and K-truss bridge. Out of these four main bridges, our bridge looks similar to the Howe Truss bridge. Our bridge looks like the Howe Truss bridge because our design is similar. A Howe Truss bridge is built with the rods on the side of the bridge crossing each other like an x, which is how we built our bridge.

Detail of Beam and Bowl Node Arched Girder Support of Steel Frame Top Ventilation One of the features of this structure that make it unique is that it isn’t just a singular dome, it is multiple intersecting domes that cover a larger area. These intersections must be reinforced in order for the structure to remain stable. A triangular truss girder connects the two intersecting domes, the longest one spans up to 100 m. These girders needed to bend with the arch of the dome, because of this the top and bottom chords of the girder are bent, the diagonals, which are thinner than the top and bottom, remain straight. These arched girders are hinged to concrete foundation blocks. The

This activity was designed to help us learn the type of things that structural engineers can do. Our task was to successfully build a bridge at the lowest price possible, that could hold up the weight of the bridge itself, and the weight of a truck driving on top of it going across without the bridge breaking falling apart. This activity was to help us further understand what structural engineering is like and how to use forces to our benefit to build and create a rigid structure.

The direction in which the Ks point is important. A better distribution of weight can be obtained when the top diagonal branch of the K points down towards the closest end of the truss. We changed the design accordingly.

The objective of the project is to design a bridge made from commercial pasta that is able to withhold a weight of 1134 grams (2.5 pounds) over a period of five minutes. Upon evaluation, the efficiency will be taken into consideration for the overall result. This makes choosing a design and craftsmanship crucial to the overall performance. The given constraints really makes it challenging however they have to be followed and considered before beginning the preliminary stages of designing. Our goal as a team from the start was to build a bridge that not only held the weight for the required time, but also be the lightest structure in the class. Our final design took a lot of work to reach. After four prototypes and combining aspects from all of them, we finally came up with a design that we felt would help us achieve our goal. Our final design most closely resembles a Camelback Pratt Truss. We came across this design in a picture of the Woolsey Bridge located in the outskirts of Woolsey, Arkansas. After studying the real life construction of this particular bridge, we found that if we manipulate it as close as possible with pasta, we ended up getting better results. The following report will go through the engineering design process we used throughout this project.

First, the truss of materials selection, use of the material information shown in the following tableAISI 4130 Steel, annealed at 865C

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.