Truss bridges are recognizable because of their numerous‚ relatively small interconnected triangles. This framework of triangles is used for is strength to withstand tension and compression forces. They are considered a light-weight yet a very stiff form of construction. At first they were built of wood‚ then with the discovery of welding they began to build then using iron‚ then steel. Occasionally‚ a combination of the materials may be used. There are actually 30 different kinds of truss bridges
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CHAPTER 1 INTRODUCTION 1.1 Introduction A bridge consists of super structure of steel or reinforced concrete member that is supported on one or more points by cables extending from one or more tower is known as cable stayed bridge. The cable-stayed bridge is one of the most modern bridges. It consists of a continuous strong beam (girder) with one or more pillars or towers (pylons) in the middle Cables stretch diagonally between these pylons and the beam‚ these cables forms intermediate supports
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This report will include research on six common types of trusses along with reasons for choosing a particular type of truss. Introduction A team of six members were given a task of building a pasta bridge each with divided roles. Rolls and jobs were delegated by myself the team leader and are as follows: *Colin Nguyen was given the task of producing a full sized drawing of the truss design as well as taking part in the construction and designing of the pasta bridge. *Jason Lay was given the task
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Pratt Truss Bridge The purpose of this experiment is to study several bridges and build a bridge similar to the one that gave the students the uppermost muse. The students had to research facts about Truss Bridges‚ including its beginnings during the late 1700’s. Early Truss Bridge builders were first to spread its name throughout the United States‚ but the name of Truss Bridges soon cultivated across the world. There were numerous reasons as to why the design of Truss Bridges grew so broad. Firstly
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the bridges loading capacity was 14.4kg‚ with an initial mas of 0.840kg. This gave a weight to strength ratio of 17.1 putting the group at 4th/8th position in class. From this it was learned the bridge held 14.4kg which is 140N therefore one Truss held 70N. These calculations helped us understand how our bridge coped with the forces and helped us answer the question of what caused our bridge to fail and where our bridge failed? Contents Abstract iii Contents 4 Introduction 5 Background
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Procedure for Fabrication & Assembly of Tower Structure Components A. Fabrication Procedure: 1. Prepare leveled horizontal bed before starting any activity. 2. Prepare marking of items as per approved cutting plan & check the marking before gas cutting. 3. All the items have to be cut by automatic gas cutting process as far as possible. 4. The items which need to be joined by welding to be prepared as per following process a. Cut the items as per suitable length.
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Alayna Patterson Graves 3B 2/4/2013 Bridge improvements Building a bridge was trial and error. This is not something you can do over night. When building the bridge I have to focus on the structure‚ details and actually putting it together right. The structure of my frame I made with the thicker wood‚ but it should have been placed different. Looking at the data from testing other bridges‚ the bridges who double bonded their wood at the bottom last a lot longer that the one piece of
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Building a Popsicle-Stick Bridge The goal: to build the strongest possible bridge to take a matchbox car‚ using wooden popsicle sticks. Constraints: The bridge must span a 55cm gap No more than 100 popsicle sticks may be used The sticks may not be cut Only white glue may be used Construction paper may be used for the deck only The test load is applied to a 4cm-wide section at the top of the arch. The test jig looks like this: (Well-built bridges can
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and any additional weights placed on it. This bridge must have a truss design. Step three of our design process we search for ideas. From our research we know that the triangle is the strongest shape in construction and this is why trusses are made up of triangles. Our bridge must be a truss bridge design. So we have done research as a group and individually on the different truss bridge designs. There are many different truss designs that already exist. So we have done internet research into
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8th ASCE Specialty Conference on Probabilistic Mechanics and Structural Reliability PMC2000-308 RELIABILITY ANALYSIS OF PRESTRESSED CONCRETE BRIDGE GIRDERS: COMPARISON OF EUROCODE‚ SPANISH NORMA IAP AND AASHTO LRFD A. S. Nowak‚ F. ASCE University of Michigan‚ Ann Arbor‚ MI 48109-2125 Nowak@umich.edu Chan-Hee Park YonseiUniversity‚ Seoul‚ Korea chpark@yonsei.ac.kr J.R. Casas University of Catalonia‚ Barcelona‚ Spain casas@etseccpb.upc.es Abstract The objective of this paper is to
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