Bridge Design Process

Bridge Design movement In order to begin we moldinessiness(prenominal) engender our picture process with the first gradation. We get down to signalize the need. The scenario is that we need to connect dickens pieces of land or structure so that a elevator car mustinessiness(prenominal) be able to conduct by it. In this communicate we atomic number 18 to name and force a twain for a matchbox car. The duo must be made of balsa wood wood and glue b arly. It must couplet over its own freight, the load of the matchbox car, and special weights that exit be added. Next we must identify what problem is given.In this scenario our problem would be that we feel a car that wants to travel amongst the two beas that the tide over is arrogateed. We commit only certain materials that merchantman be utilise in constructing our connect over. And apply those certain materials it must be of a particular size. And erstwhile those criteria stand been met we must cod a strong duad that will deal the weight of the car and any additional weights placed on it. This bridge must have a truss digit. gradation three of our picture process we take c are for ideas.From our question we know that the triangle is the strongest skeleton in construction and this is why trusses are made up of triangles. Our bridge must be a truss bridge introduction. So we have do look as a group and one after a nonher on the contrastive truss bridge designs. on that point are many an another(prenominal)(prenominal) various truss designs that already exist. So we have done internet research into the trials and tests prescribe on these different designs to see what features are stronger than others. and then we look at the project constraints that are given to us.The constraints that we have are materials, roadbed size, cross section size, span opening, and boilersuit bridge width. The materials cornerstone only be balsa wood and glue. Glue can not be on surfaces that are not bonded. The roadbed is where the matchbox car must be able to pass along the bridge. The roadbed must also be able to sustain the loading block with footprint, which is postulate for adding weights. There are also measurement constraints on the roadbed. The cross section wood members must not exceed one-eighth by on-eighth inch.Span opening must be somewhat four hundred millimeters. The bridge has a minimum width of fifty millimeters with no maximum width constraint. There is no minimum or maximum crest requirement. The design criterion is the fifth step in the design process. The criteria would include the cost, reliability, weight, maintenance, appearance, compatibility, safety, racquet level, effectiveness, durability, feasibility, and acceptance. Cost is precise manageable for our design since the only materials will be balsa wood and glue, which are relatively roaring to find.The whole idea for the bridge design was something that could safely carry the weight of the car and the weight of the loading block electropositive wholly the weights that will be added. So therefore, when picking the design, we chose something that we imagination would be legitimate enough to carry all the required weights while safely allowing the car to pass through without flexing or collapsing. We also well-tried to devil our bridge as flow in weight as affirmable for the design because we will be competing for the lightest bridge if ours carries our predicted weight.The design appearance is very harmonious which is pleasing to the eye. It is nothing too complex, which makes it very acceptable. This bridge is very compatible with any location or environment. Since our design is a very open design the racquet level would be minimal since it is not enclosed. It is, overall, a very durable and executable design. Step six in the design process is to find alternative solutions. in the beginning we came up with our last(a) bridge design we had many alternative solutions to the problem that would die the need. In our group we have septet members.So we to separately one individually did our own research about the materials, about trusses, and about different bridge designs. After that research we apiece came up with our own individual bridge design that we thought would be commensurate for the need. We then made a field of study of that bridge in our group journal. whence during our next meeting, we discussed each bridge and the strengths and weaknesses of each bridge. And from all those alternative solutions we came up together, using something from each individual idea, with a bridge design that was the best for the closing harvest.For the synopsis part of the bridge, we focused mainly on design. Because this is a truss bridge, and the strongest structural constellation is a triangle, we knew that we had to focus on the trusses in the bridge. We did research on the stronger and weaker truss designs. done our research we found that the bridges that contained more than triangles were the bridges that ended up belongings up the best to stress being added. Along with the design, the physics behind the trusses were of equalise importance.We included a truss abridgment along with our bridge to determine if the weight that the bridge has to support will be distributed along the length of the bridge every bit. otherwise factors that we took into account are how the bridge was termination to be loaded. We knew the weight was going to be anchored to the middle of the bridge so we had to make sure that the weight would be evenly distributed to keep from collapsing. Our criteria from our finale matrix came from many different places. Before we each picked a bridge to input into our group journal, we had done a lot of research.We had to research what a truss bridge was and what made them strong. Then we had to incorporate those ideas into our design. So once each of us had picked a bridge that we thought was sufficient for a final product that design unsounded had to convince the other members of the group before it was chosen as the one design for the overall product. The final design was something that we all agreed would hold out the weight. For the specification part our project we have many things. First we have all our bridge ideas sketched in our journal. We then have a detailed AutoCAD drawing of our final design.And we have a truss psychoanalysis of the angles of our trusses in our portfolio. The Bridge Design Process The Abstract We are given a project, or a problem, where we need to attach two masses with a bridge so that a car whitethorn be able to pass through it. The bridge must meet certain criteria and constraints. It must carry the car and added weights and still be safe. But before we can determine a bridge design, we must use our ten step design process to come up with a sufficient design. The following report goes in depth on that process and o ur decision process.