User:Horizon1992/enes100/Project 2

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Week0 Preferences
Bridge building .

Week1 Narrative
This week we have been assigned the bridge construction project. Bridges are designed to pass over an obstacles that cant be crossed using a car. There are many different designs today, and there are

Arch bridges

Arch bridges are one of the oldest types of bridges and have been around for thousands of years. Arch bridges have great natural strength.They were originally built of stone or brick but these days are built of reinforced concrete or steel. The introduction of these new materials allow arch bridges to be longer with lower spans.Instead of pushing straight down, the load of an arch bridge is carried outward along the curve of the arch to the supports at each end. The weight is transferred to the supports at either end.These supports, called the abutments, carry the load and keep the ends of the bridge from spreading out (I).

Beam bridges Very basic type of bridges that are supported by several beams of various shapes and sizes. They can be inclined or V shaped.

Truss bridges Truss bridges are one of the oldest types of modern bridges. Truss bridges are amongst a variety of bridge designs that are being used for road traffic. The basic shape of a truss bridge is like a right triangle, with the hypotenuse extending to the abutments.

Suspension bridges Bridge with overhead cables supporting its roadway. One of the oldest of engineering forms, suspension bridges were constructed by primitive peoples using vines for cables and mounting the roadway directly on the cables.

cable-stayed bridge The tower of a cable-stayed bridge is responsible for absorbing and dealing with compressional forces. The cables attach to the roadway in various ways. Bridge that uses deck cables that are directly connected to one or more vertical columns.

There are many more bridges that are out there today but above bridges are the most common one.

In my opinion, i think the Truss bridge is easy and toughest bridge. It will also be the easiest to make of all the bridges out there. As a group we have decided to go with Truss bridge but still have to brainstorm on how we will start working on it.

Week2 Narrative
This week was really tough one, our team had to decided how we will be starting it off, also had to decide what kind of bridge will be working on. for example: opening bridge, closed, tunnel, or suspended with ropes only. One of our team member has already being the design of the bridge on the Autodesk program. Another team member is making a prototype of the openin bridge that he will show us to get approved. I myself has been working on the autodesk program to the design correct but haven't got much of it done yet but excepting it to be done this week in order to accelerate our project to building it.

Week3 Narrative
Week 3 is mostly hands on work, we have started building bridge and for it to able to open and close, we went with the hydraulic system. Hydraulic will consist of 2 VvW Large Plastic 100ml Syringe +120cm (47in) handy plastic tubing, 2 Plastic 100ml Syringe. With that we will be able to raise the bridge and also bring down manually. We will come back with auto version after gaining some knowledge of how the bridge needs to work. For example : clearance between the road and the edge of the pillar, because when the bride rises it needs to have enough space to open without damaging anything else. How much force is needed to raise it up with few weights on top. what will be the right angle for it to raise it easily. Also, because we don't have enough motors we will also try to figure out what is the best way to use one motor and still bb able to raise both side of the bridge. Its long way to go but we will accomplish it with perfection.

Week4 Narrative
''Tell a detailed story describing what you did for your team over the first weekend. Link to any wiki pages you edited, videos created. Upload any pictures taken. Compare your task with what you actually did and write what you feel are the next steps.''